@article {pmid39847448,
year = {2025},
author = {Wang, S and Luo, H},
title = {Dating the bacterial tree of life based on ancient symbiosis.},
journal = {Systematic biology},
volume = {},
number = {},
pages = {},
doi = {10.1093/sysbio/syae071},
pmid = {39847448},
issn = {1076-836X},
abstract = {Obtaining a timescale for bacterial evolution is crucial to understand early life evolution but is difficult owing to the scarcity of bacterial fossils. Here, we introduce multiple new time constraints to calibrate bacterial evolution based on ancient symbiosis. This idea is implemented using a bacterial tree constructed with genes found in the mitochondrial lineages phylogenetically embedded within Proteobacteria. The expanded mitochondria-bacterial tree allows the node age constraints of eukaryotes established by their abundant fossils to be propagated to ancient co-evolving bacterial symbionts and across the bacterial tree of life. Importantly, we formulate a new probabilistic framework that considers uncertainty in inference of the ancestral lifestyle of modern symbionts to apply 19 relative time constraints (RTC) each informed by host-symbiont association to constrain bacterial symbionts no older than their eukaryotic host. Moreover, we develop an approach to incorporating substitution mixture models that better accommodate substitutional saturation and compositional heterogeneity for dating deep phylogenies. Our analysis estimates that the last bacterial common ancestor (LBCA) occurred approximately 4.0-3.5 billion years ago (Ga), followed by rapid divergence of major bacterial clades. It is generally robust to alternative root ages, root positions, tree topologies, fossil ages, ancestral lifestyle reconstruction, gene sets, among other factors. The obtained timetree serves as a foundation for testing hypotheses regarding bacterial diversification and its correlation with geobiological events across different timescales.},
}

@article {pmid39833664,
year = {2025},
author = {Tan, S and Wang, W and Li, J and Sha, Z},
title = {Comprehensive analysis of 111 Pleuronectiformes mitochondrial genomes: insights into structure, conservation, variation and evolution.},
journal = {BMC genomics},
volume = {26},
number = {1},
pages = {50},
pmid = {39833664},
issn = {1471-2164},
mesh = {*Genome, Mitochondrial ; Animals ; *Flatfishes/genetics ; *Phylogeny ; *Evolution, Molecular ; Genetic Variation ; RNA, Transfer/genetics ; Codon Usage ; Gene Rearrangement ; Genomics/methods ; },
abstract = {BACKGROUND: Pleuronectiformes, also known as flatfish, are important model and economic animals. However, a comprehensive genome survey of their important organelles, mitochondria, has been limited. Therefore, we aim to analyze the genomic structure, codon preference, nucleotide diversity, selective pressure and repeat sequences, as well as reconstruct the phylogenetic relationship using the mitochondrial genomes of 111 flatfish species.

RESULTS: Our analysis revealed a conserved gene content of protein-coding genes and rRNA genes, but varying numbers of tRNA genes and control regions across species. Various gene rearrangements were found in flatfish species, especially for the rearrangement of nad5-nad6-cytb block in Samaridae family, the swapping rearrangement of nad6 and cytb gene in Bothidae family, as well as the control region translocation and tRNA-Gln gene inversion in the subfamily Cynoglossinae, suggesting their unique evolutionary history and/or functional benefit. Codon usage showed obvious biases, with adenine being the most frequent nucleotide at the third codon position. Nucleotide diversity and selective pressure analysis suggested that different protein-coding genes underwent varying degrees of evolutionary pressure, with cytb and cox genes being the most conserved ones. Phylogenetic analysis using both whole mitogenome information and concatenated independently aligned protein-coding genes largely mirrored the taxonomic classification of the species, but showed different phylogeny. The identification of simple sequence repeats and various long repetitive sequences provided additional complexity of genome organization and offered markers for evolutionary studies and breeding practices.

CONCLUSIONS: This study represents a significant step forward in our comprehension of the flatfish mitochondrial genomes, providing valuable insights into the structure, conservation and variation within flatfish mitogenomes, with implications for understanding their evolutionary history, functional genomics and fisheries management. Future research can delve deeper into conservation biology, evolutionary biology and functional usages of variations.},
}

*Genome, Mitochondrial
Animals
*Flatfishes/genetics
*Phylogeny
*Evolution, Molecular
Genetic Variation
RNA, Transfer/genetics
Codon Usage
Gene Rearrangement
Genomics/methods

@article {pmid39819387,
year = {2025},
author = {Li, H and Liu, L and Qiu, Z and He, F and Dong, W},
title = {Complete mitochondrial genome assembly and comparative analysis of Colocasia esculenta.},
journal = {BMC plant biology},
volume = {25},
number = {1},
pages = {67},
pmid = {39819387},
issn = {1471-2229},
support = {2021GXNSFBA196012, 2022GXNSFAA035493//Natural Science Foundation of Guangxi/ ; TS202113//the Lipu C. esculenta Test Station Project of Guangxi/ ; Gui nongke 2023YM91, Gui nongke 2024YP081//Basic Scientific Research Business Project of Guangxi Academy of Agricultural Sciences/ ; },
mesh = {*Genome, Mitochondrial ; *Colocasia/genetics ; *Phylogeny ; Genome, Plant ; Base Composition ; },
abstract = {Colocasia esculenta ranks as the fifth most important tuber crop and is known for its high nutritional and medicinal value. However, there is no research on its mitochondrial genome, hindering in-depth exploration of its genomic resources and genetic relationships. Using second- and third-generation sequencing technologies, we assembled and annotated the mitogenome of C. esculenta. Its mitogenome mainly consists of five circular DNA molecules, with a total length of 594,811 bp and a GC content of 46.25%. A total of 55 genes, 157 simple sequence repeats, 29 tandem repeat sequences, 202 dispersed repeat sequences, and 625 RNA editing sites were detected. Most protein-coding genes use ATG as the start codon, and the third position of the codon tends to be A or T (U). GAA, AUU, and UUU are the most common codons in C. esculenta mitochondria. Finally, based on 28 representative plant species, a phylogenetic tree was constructed, revealing a close relationship between C. esculenta and Araceae. This study provides comprehensive information on C. esculenta, laying a foundation for crop genetics and molecular breeding.},
}

*Genome, Mitochondrial
*Colocasia/genetics
*Phylogeny
Genome, Plant
Base Composition

@article {pmid39806272,
year = {2025},
author = {Mazzocca, A and Ferraro, G and Misciagna, G},
title = {The systemic evolutionary theory of the origin of cancer (SETOC): an update.},
journal = {Molecular medicine (Cambridge, Mass.)},
volume = {31},
number = {1},
pages = {12},
pmid = {39806272},
issn = {1528-3658},
mesh = {Humans ; *Neoplasms/metabolism/pathology/genetics ; *Biological Evolution ; Animals ; Cell Transformation, Neoplastic/genetics/metabolism ; Tumor Microenvironment ; },
abstract = {The Systemic Evolutionary Theory of the Origin of Cancer (SETOC) is a recently proposed theory founded on two primary principles: the cooperative and endosymbiotic process of cell evolution as described by Lynn Margulis, and the integration of complex systems operating in eukaryotic cells, which is a core concept in systems biology. The SETOC proposes that malignant transformation occurs when cells undergo a continuous adaptation process in response to long-term injuries, leading to tissue remodeling, chronic inflammation, fibrosis, and ultimately cancer. This process involves a maladaptive response, wherein the 'endosymbiotic contract' between the nuclear-cytoplasmic system (derived from the primordial archaeal cell) and the mitochondrial system (derived from the primordial α-proteobacterium) gradually breaks down. This ultimately leads to uncoordinated behaviors and functions in transformed cells. The decoupling of the two cellular subsystems causes transformed cells to acquire phenotypic characteristics analogous to those of unicellular organisms, as well as certain biological features of embryonic development that are normally suppressed. These adaptive changes enable cancer cells to survive in the harsh tumor microenvironment characterized by low oxygen concentrations, inadequate nutrients, increased catabolic waste, and increased acidity. De-endosymbiosis reprograms the sequential metabolic functions of glycolysis, the TCA cycle, and oxidative phosphorylation (OxPhos). This leads to increased lactate fermentation (Warburg effect), respiratory chain dysfunction, and TCA cycle reversal. Here, we present an updated version of the SETOC that incorporates the fundamental principles outlined by this theory and integrates the epistemological approach used to develop it.},
}

Humans
*Neoplasms/metabolism/pathology/genetics
*Biological Evolution
Animals
Cell Transformation, Neoplastic/genetics/metabolism
Tumor Microenvironment

@article {pmid39804925,
year = {2025},
author = {Ricou, A and Simon, M and Duflos, R and Azzopardi, M and Roux, F and Budar, F and Camilleri, C},
title = {Identification of novel genes responsible for a pollen killer present in local natural populations of Arabidopsis thaliana.},
journal = {PLoS genetics},
volume = {21},
number = {1},
pages = {e1011451},
doi = {10.1371/journal.pgen.1011451},
pmid = {39804925},
issn = {1553-7404},
abstract = {Gamete killers are genetic loci that distort segregation in the progeny of hybrids because the killer allele promotes the elimination of the gametes that carry the sensitive allele. They are widely distributed in eukaryotes and are important for understanding genome evolution and speciation. We had previously identified a pollen killer in hybrids between two distant natural accessions of Arabidopsis thaliana. This pollen killer involves three genetically linked genes, and we previously reported the identification of the gene encoding the antidote that protects pollen grains from the killer activity. In this study, we identified the two other genes of the pollen killer by using CRISPR-Cas9 induced mutants. These two genes are necessary for the killer activity that we demonstrated to be specific to pollen. The cellular localization of the pollen killer encoded proteins suggests that the pollen killer activity involves the mitochondria. Sequence analyses reveal predicted domains from the same families in the killer proteins. In addition, the C-terminal half of one of the killer proteins is identical to the antidote, and one amino acid, crucial for the antidote activity, is also essential for the killer function. Investigating more than 700 worldwide accessions of A. thaliana, we confirmed that the locus is subject to important structural rearrangements and copy number variation. By exploiting available de novo genomic sequences, we propose a scenario for the emergence of this pollen killer in A. thaliana. Furthermore, we report the co-occurrence and behavior of killer and sensitive genotypes in several local populations, a prerequisite for studying gamete killer evolution in the wild. This highlights the potential of the Arabidopsis model not only for functional studies of gamete killers but also for investigating their evolutionary trajectories at complementary geographical scales.},
}

@article {pmid39799216,
year = {2025},
author = {Shi, C and Guo, Y and Yao, L and Xu, Y and Zhou, J and Hua, M},
title = {Development of a mitochondrial mini-barcode and its application in metabarcoding for identification of leech in traditional Chinese medicine.},
journal = {Scientific reports},
volume = {15},
number = {1},
pages = {1698},
pmid = {39799216},
issn = {2045-2322},
mesh = {Animals ; *Leeches/genetics ; *DNA Barcoding, Taxonomic/methods ; *Medicine, Chinese Traditional ; RNA, Ribosomal, 16S/genetics ; Genome, Mitochondrial ; DNA, Mitochondrial/genetics ; Mitochondria/genetics ; Phylogeny ; },
abstract = {In Traditional Chinese Medicine (TCM), the medicinal leech is vital for treatments to promote blood circulation and eliminate blood stasis. However, the prevalence of counterfeit leech products in the market undermines the quality and efficacy of these remedies. Traditional DNA barcoding techniques, such as the COI barcode, have been limited in their application due to amplification challenges. This study identified high variability in the 16 S rRNA gene within the mitochondrial genome across five leech species, leading to the development of a novel 219 bp mini-barcode. Compared with the traditional COI barcode, our mini-barcode showed remarkable identification efficiency, classifying 142 out of 147 leech samples from fresh and processed materials. In contrast, the COI barcode could only successfully identify 79 out of the 147 samples. In the case of seven batches of leech decoction pieces, the mini-barcode identified six, whereas the COI barcode only recognized one. Additionally, the mini-barcode effectively discerned five leech species within Chinese patent medicines when combined with metabarcoding technology. These results confirm the mini-barcode's potential as a reliable tool for rapidly and precisely identifying leech species in TCM products.},
}

Animals
*Leeches/genetics
*DNA Barcoding, Taxonomic/methods
*Medicine, Chinese Traditional
RNA, Ribosomal, 16S/genetics
Genome, Mitochondrial
DNA, Mitochondrial/genetics
Mitochondria/genetics
Phylogeny

@article {pmid39796122,
year = {2024},
author = {Queiroz, ALF and Garcia, CB and Silva, JPMO and Cavalini, DFA and Alexandrino, AV and Cunha, AF and Vercesi, AE and Castilho, RF and Shiguemoto, GE},
title = {Preventive Effects of Resistance Training on Hemodynamics and Kidney Mitochondrial Bioenergetic Function in Ovariectomized Rats.},
journal = {International journal of molecular sciences},
volume = {26},
number = {1},
pages = {},
pmid = {39796122},
issn = {1422-0067},
mesh = {Animals ; *Ovariectomy ; Female ; *Kidney/metabolism ; *Hemodynamics ; *Mitochondria/metabolism ; Rats ; *Rats, Wistar ; *Energy Metabolism ; *Resistance Training/methods ; *Physical Conditioning, Animal ; Oxidative Phosphorylation ; },
abstract = {Menopause occurs due to the depletion of the ovarian reserve, leading to a progressive decline in estrogen (E2) levels. This decrease in E2 levels increases the risk of developing several diseases and can coexist with chronic kidney disease (CKD). Arterial hypertension (AH) is another condition associated with menopause and may either contribute to or result from CKD. Ovariectomy (OVX) induces hypoestrogenism, which can lead to mitochondrial bioenergetic dysfunction in the kidneys. Previous studies have suggested that exercise training has beneficial effects on adults with CKD and AH. To investigate the effects of OVX and resistance training (RT) on hemodynamic parameters and mitochondrial bioenergetic function of the kidney, female Wistar rats were divided into ovariectomized (OVX) and intact (INT) groups. These rats were either kept sedentary (SED) or subjected to RT for thirteen weeks. The RT involved climbing a vertical ladder with a workload apparatus. Hemodynamic parameters were assessed via tail plethysmography. Mitochondrial respiratory function was evaluated with high-resolution respirometry. Gene expression related to the electron transport chain (ETC) and oxidative phosphorylation (OXPHOS) was evaluated by real-time qPCR. At week 13, key hemodynamic parameters (systolic blood pressure and mean arterial pressure) were significantly elevated in the OVX-SED group. Compared with those in the other groups, mitochondrial bioenergetics were impaired in the OVX-SED group. In contrast, the trained groups presented improved mitochondrial bioenergetic function compared with the sedentary groups. OVX led to reduced gene expression related to the mitochondrial ETC and OXPHOS, whereas RT both prevented this reduction and increased gene expression in the trained groups. Our results indicate that hypoestrogenism significantly decreases OXPHOS and ETC capacity in the kidneys of sedentary animals. However, RT effectively increased the expression of genes related to mitochondrial ETC and OXPHOS, thereby counteracting the effects of OVX.},
}

Animals
*Ovariectomy
Female
*Kidney/metabolism
*Hemodynamics
*Mitochondria/metabolism
Rats
*Rats, Wistar
*Energy Metabolism
*Resistance Training/methods
*Physical Conditioning, Animal
Oxidative Phosphorylation

@article {pmid39775223,
year = {2025},
author = {de Oliveira, EC and Tibúrcio, R and Duarte, G and Lago, A and de Melo, L and Nunes, S and Davanzo, GG and Martins, AJ and Ribeiro, BV and Mothé, D and Menezes, JBP and Veras, P and Tavares, N and Moraes-Vieira, PM and Brodskyn, CI},
title = {Pharmacological inhibition of key metabolic pathways attenuates Leishmania spp infection in macrophages.},
journal = {PLoS neglected tropical diseases},
volume = {19},
number = {1},
pages = {e0012763},
doi = {10.1371/journal.pntd.0012763},
pmid = {39775223},
issn = {1935-2735},
abstract = {Macrophages represent a fundamental component of the innate immune system that play a critical role in detecting and responding to pathogens as well as danger signals. Leishmania spp. infections lead to a notable alteration in macrophage metabolism, whereby infected cells display heightened energy metabolism that is linked to the integrity of host mitochondria. However, little is known about how different species of Leishmania manipulate host metabolism. Here, we demonstrate that despite differences in their mechanisms for evading host immune responses, L. amazonensis and L. braziliensis induce comparable disruptions in key metabolic pathways. We found that infected macrophages exhibited an overall elevation in energy metabolism regardless of the parasite strain, evidenced by the elevation in glycolysis and oxygen consumption rates, along with increased proton leak and decreased ATP production. We also analyzed the effects of both Leishmania spp. strain infection on mitochondria function, further revealing that infected cells display heightened mitochondrial mass and membrane potential. To investigate the metabolic pathways required for Leishmania amastigotes to persist in BMDMs, we pre-treated cells with small molecule drugs that target major metabolic pathways, revealing that perturbations in several metabolic processes affected parasite survival in a strain-independent manner. Treatments with inhibitors of the oxidative phosphorylation and glycolysis substantially reduced parasite loads. Collectively, our findings suggest that L.amazonensis and L.braziliensis exploit host cell metabolic pathways similarly to survive in macrophages.},
}

@article {pmid39662740,
year = {2025},
author = {de Quadros, T and Jaramillo, ML and Barreto, C and da Rosa, RD and de Melo, MS and Nazari, EM},
title = {Modulation of mitochondrial dynamics genes and mtDNA during embryonic development and under UVB exposure.},
journal = {Comparative biochemistry and physiology. Part A, Molecular & integrative physiology},
volume = {300},
number = {},
pages = {111790},
doi = {10.1016/j.cbpa.2024.111790},
pmid = {39662740},
issn = {1531-4332},
mesh = {Animals ; *Ultraviolet Rays ; *DNA, Mitochondrial/genetics ; *Embryonic Development/radiation effects/genetics ; *Mitochondrial Dynamics/radiation effects ; Palaemonidae/genetics/embryology/radiation effects ; Phylogeny ; Mitochondria/metabolism/radiation effects/genetics ; Gene Expression Regulation, Developmental/radiation effects ; Embryo, Nonmammalian/radiation effects/metabolism ; },
abstract = {Studies using the embryos of the freshwater prawn Macrobrachium olfersii have reported changes in embryonic cells after exposure to ultraviolet B (UVB) radiation, such as DNA damage and apoptosis activation. Considering the importance of mitochondria in embryonic cells, this study aimed to characterize the aspects of mitochondrial morphofunctionality in M. olfersii embryos and mitochondrial responses to UVB radiation exposure. The coding sequences of genes Tfam, Nrf1, Mfn1, and Drp1 were identified from the transcriptome of M. olfersii embryos. The phylogenetic relationship showed strong amino acid identity and a highly conserved nature of the sequences. Additionally, the number of mitochondrial DNA (mtDNA) copies were higher in the early embryonic days. The results showed that the expression of the analyzed genes was highly regulated during embryonic development, increasing their levels near hatching. Furthermore, when embryos were exposed to UVB radiation, mitochondrial biogenesis was activated, recognized by higher levels of transcripts of genes Tfam and Nrf1, accompanied by mitochondrial fission. Additionally, these mitochondrial events were supported by an increase of mtDNA copies. Our results showed that UVB radiation was able to change the mitochondrial morphofunctionality, and under the current knowledge, certainly compromise embryonic cellular integrity. Additionally, mitochondria is an important cellular target of this radiation and its responses can be used to assess environmental stress caused by UVB radiation in embryos of aquatic species.},
}

Animals
*Ultraviolet Rays
*DNA, Mitochondrial/genetics
*Embryonic Development/radiation effects/genetics
*Mitochondrial Dynamics/radiation effects
Palaemonidae/genetics/embryology/radiation effects
Phylogeny
Mitochondria/metabolism/radiation effects/genetics
Gene Expression Regulation, Developmental/radiation effects
Embryo, Nonmammalian/radiation effects/metabolism

@article {pmid39759086,
year = {2024},
author = {Zou, J and Liu, Y and Tian, C and Wang, L and Li, S and Ran, J and Yang, X and Nie, G and Peng, W},
title = {Understanding the Complexity of Hypertension with Sarcopenia by Scientometric Analysis.},
journal = {Journal of multidisciplinary healthcare},
volume = {17},
number = {},
pages = {6211-6228},
pmid = {39759086},
issn = {1178-2390},
abstract = {OBJECTIVE: The scientometric analysis was aim to focus on recent studies and clarify new research directions on hypertension with sarcopenia. We hope to provide comprehensive insights or actionable recommendations for clinicians or policymakers.

METHODS: The Web of Science Core Collection database (WoSCC) from 2004 to 2023 for analysis was used. And VOSviewer, CiteSpace, and Origin software were utilized for scientometric analyses.

RESULTS: The United States was the primary contributor to 1,994 studies on hypertension with sarcopenia. The University of São Paulo emerged as the most prolific institution, with Morrell Nicholas W. being the most influential scholar and Cruz-Jentoft A.J. being the most co-cited author. PLoS One was the most prolific journal, whereas Circulation was the most relevant journal. Research has focused not only on physiological, biochemical, and cell biological mechanisms but also on sarcopenia associated with other diseases and involved in various fields, highlighting the complexity of the area and the need for integrative treatment. Keyword analysis revealed that, in addition to hypertension and sarcopenia, other topics such as obesity, pulmonary hypertension, old age, metabolic syndrome, inflammation, hypoxia, exercise, insulin resistance, and revascularization attracted attention. In recent years, COVID-19, mitochondria, handgrip strength, etc. have been hot topics, but aging, skeletal muscle, weight loss, diabetes, obesity, metabolic syndrome, insulin resistance, heart failure, mitochondria, mortality, exercise, and physical activity seems to bridge hypertension and sarcopenia research.

CONCLUSION: This study highlights the distribution of fields, the structure of knowledge and the evolution of major research topics related to hypertension in patients with sarcopenia. Identifying keyword hotspots enhanced the comprehension of occurrence, development, and future research trends related to the topic.},
}

@article {pmid39732540,
year = {2025},
author = {Golomb, R and Dahan, O and Dahary, D and Pilpel, Y},
title = {Cell-autonomous adaptation: an overlooked avenue of adaptation in human evolution.},
journal = {Trends in genetics : TIG},
volume = {41},
number = {1},
pages = {12-22},
doi = {10.1016/j.tig.2024.10.009},
pmid = {39732540},
issn = {0168-9525},
mesh = {Humans ; *Adaptation, Physiological/genetics ; *Biological Evolution ; Mitochondria/genetics/metabolism ; Selection, Genetic/genetics ; Animals ; Evolution, Molecular ; },
abstract = {Adaptation to environmental conditions occurs over diverse evolutionary timescales. In multi-cellular organisms, adaptive traits are often studied in tissues/organs relevant to the environmental challenge. We argue for the importance of an underappreciated layer of evolutionary adaptation manifesting at the cellular level. Cell-autonomous adaptations (CAAs) are inherited traits that boost organismal fitness by enhancing individual cell function. For instance, the cell-autonomous enhancement of mitochondrial oxygen utilization in hypoxic environments differs from an optimized erythropoiesis response, which involves multiple tissues. We explore the breadth of CAAs across challenges and highlight their counterparts in unicellular organisms. Applying these insights, we mine selection signals in Andean highlanders, revealing novel candidate CAAs. The conservation of CAAs across species may reveal valuable insights into multi-cellular evolution.},
}

Humans
*Adaptation, Physiological/genetics
*Biological Evolution
Mitochondria/genetics/metabolism
Selection, Genetic/genetics
Animals
Evolution, Molecular

@article {pmid39732307,
year = {2024},
author = {Wang, Z and Sun, W and Zhang, K and Ke, X and Wang, Z},
title = {New insights into the relationship of mitochondrial metabolism and atherosclerosis.},
journal = {Cellular signalling},
volume = {127},
number = {},
pages = {111580},
doi = {10.1016/j.cellsig.2024.111580},
pmid = {39732307},
issn = {1873-3913},
abstract = {Atherosclerotic cardiovascular and cerebrovascular diseases are the number one killer of human health. In view of the important role of mitochondria in the formation and evolution of atherosclerosis, our manuscript aims to comprehensively elaborate the relationship between mitochondria and the formation and evolution of atherosclerosis from the aspects of mitochondrial dynamics, mitochondria-organelle interaction (communication), mitochondria and cell death, mitochondria and vascular smooth muscle cell phenotypic switch, etc., which is combined with genome, transcriptome and proteome, in order to provide new ideas for the pathogenesis of atherosclerosis and the diagnosis and treatment of related diseases.},
}

@article {pmid39703908,
year = {2024},
author = {Li, W and Yang, Z and Yan, C and Chen, S and Zhao, X},
title = {The relationship between mitochondrial DNA haplotype and its copy number on body weight and morphological traits of Wuliangshan black-bone chickens.},
journal = {PeerJ},
volume = {12},
number = {},
pages = {e17989},
pmid = {39703908},
issn = {2167-8359},
mesh = {Animals ; *Chickens/genetics/anatomy & histology ; *Haplotypes/genetics ; *DNA, Mitochondrial/genetics ; *Body Weight/genetics ; Female ; *DNA Copy Number Variations ; Phylogeny ; Phenotype ; },
abstract = {Mitochondria play a pivotal role as carriers of genetic information through their circular DNA molecules. The rapid evolution of the D-loop region in mitochondria makes it an ideal molecular marker for exploring genetic differentiation among individuals within species and populations with close kinship. However, the influence of mtDNA D-loop region haplotypes and mtDNA copy numbers on phenotypic traits, particularly production traits in chickens, remains poorly understood. In this comprehensive study, we conducted D-loop region amplification and sequencing in the blood mitochondria of 232 female Wuliangshan black-bone chickens. Our investigation identified a total of 38 haplotypes, with a focus on 10 haplotypes that included more than five individuals. We meticulously analyzed the correlations between these haplotypes and a range of traits, encompassing body weight, tibial length, tibial circumference, body oblique length, chest width, and chest depth. The results unveiled significant disparities in specific tested traits across different haplotypes, indicating a tangible association between mtDNA haplotypes and traits in chickens. These findings underscore the potential impact of mitochondrial DNA variations on energy metabolism, ultimately leading to divergent chicken phenotypes. Furthermore, our examination revealed positive correlations between mtDNA copy numbers and tested traits for select haplotypes, while other haplotypes exhibited non-uniform relationships between traits and mtDNA copy numbers. In addition, phylogenetic analysis disclosed the involvement of two subspecies of red jungle chicken in the origin of Wuliangshan black-bone chickens. Consequently, our research contributes novel insights into mitochondrial genomic selection, augments comprehension of the roles played by haplotypes and mtDNA copy numbers in chicken population genetics and phylogenetic analysis, and furnishes fundamental data crucial for the preservation and provenance determination of black-bone chickens.},
}

Animals
*Chickens/genetics/anatomy & histology
*Haplotypes/genetics
*DNA, Mitochondrial/genetics
*Body Weight/genetics
Female
*DNA Copy Number Variations
Phylogeny
Phenotype

@article {pmid39122659,
year = {2024},
author = {Rhodes, EM and Yap, KN and Hill, GE and Hood, WR},
title = {A Comparison of the Mitochondrial Performance between Migratory and Sedentary Mimid Thrushes.},
journal = {Integrative and comparative biology},
volume = {64},
number = {6},
pages = {1859-1870},
doi = {10.1093/icb/icae137},
pmid = {39122659},
issn = {1557-7023},
support = {//Auburn University/ ; OIA1736150//National Science Foundation/ ; //Society for the Study of Evolution/ ; },
mesh = {Animals ; *Animal Migration/physiology ; Songbirds/physiology ; Flight, Animal/physiology ; Mitochondria/physiology ; Citrate (si)-Synthase/metabolism ; Species Specificity ; Pectoralis Muscles/physiology ; },
abstract = {Birds exhibit a variety of migration strategies. Because sustained flapping flight requires the production of elevated levels of energy compared to typical daily activities, migratory birds are well-documented to have several physiological adaptations to support the energy demands of migration. However, even though mitochondria are the source of ATP that powers flight, the respiratory performance of the mitochondria is almost unstudied in the context of migration. We hypothesized that migratory species would have higher mitochondrial respiratory performance during migration compared to species that do not migrate. To test this hypothesis, we compared variables related to mitochondrial respiratory function between two confamilial bird species-the migratory Gray Catbird (Dumetella carolinensis) and the non-migratory Northern Mockingbird (Mimus polyglottos). Birds were captured at the same location along the Alabama Gulf Coast, where we assumed that Gray Catbirds were migrants and where resident Northern Mockingbirds live year-round. We found a trend in citrate synthase activity, which suggests that Gray Catbirds have a greater mitochondrial volume in their pectoralis muscle, but we observed no other differences in mitochondrial respiration or complex enzymatic activities between individuals from the migrant vs. the non-migrant species. However, when we assessed the catbirds included in our study using well-established indicators of migratory physiology, birds fell into two groups: a group with physiological parameters indicating a physiology of birds engaged in migration and a group with the physiology of birds not migrating. Thus, our comparison included catbirds that appeared to be outside of migratory condition. When we compared the mitochondrial performance of these three groups, we found that the mitochondrial respiratory capacity of migrating catbirds was very similar to that of Northern Mockingbirds, while the catbirds judged to be not migrating were lowest. One explanation for these observations is these species display very different daily flight behaviors. While the mockingbirds we sampled were not breeding nor migrating, they are highly active birds, living in the open and engaging in flapping flights throughout each day. In contrast, Gray Catbirds live in shrubs and fly infrequently when not migrating. Such differences in baseline energy needs likely confounded our attempt to study adaptations to migration.},
}

Animals
*Animal Migration/physiology
Songbirds/physiology
Flight, Animal/physiology
Mitochondria/physiology
Citrate (si)-Synthase/metabolism
Species Specificity
Pectoralis Muscles/physiology

@article {pmid39701103,
year = {2024},
author = {Smith, TB and Kopajtich, R and Demain, LAM and Rea, A and Thomas, HB and Schiff, M and Beetz, C and Joss, S and Conway, GS and Shukla, A and Yeole, M and Radhakrishnan, P and Azzouz, H and Ben Chehida, A and Elmaleh-Bergès, M and Glasgow, RIC and Thompson, K and Oláhová, M and He, L and Jenkinson, EM and Jahic, A and Belyantseva, IA and Barzik, M and Urquhart, JE and O'Sullivan, J and Williams, SG and Bhaskar, SS and Carrera, S and Blakes, AJM and Banka, S and Yue, WW and Ellingford, JM and Houlden, H and , and Munro, KJ and Friedman, TB and Taylor, RW and Prokisch, H and O'Keefe, RT and Newman, WG},
title = {Bi-allelic variants in DAP3 result in reduced assembly of the mitoribosomal small subunit with altered apoptosis and a Perrault-syndrome-spectrum phenotype.},
journal = {American journal of human genetics},
volume = {},
number = {},
pages = {},
doi = {10.1016/j.ajhg.2024.11.007},
pmid = {39701103},
issn = {1537-6605},
abstract = {The mitochondrial ribosome (mitoribosome) synthesizes 13 protein subunits of the oxidative phosphorylation system encoded by the mitochondrial genome. The mitoribosome is composed of 12S rRNA, 16S rRNA, and 82 mitoribosomal proteins encoded by nuclear genes. To date, variants in 12 genes encoding mitoribosomal proteins are associated with rare monogenic disorders and frequently show combined oxidative phosphorylation deficiency. Here, we describe five unrelated individuals with bi-allelic variants in death-associated protein 3 (DAP3), a nuclear gene encoding mitoribosomal small subunit 29 (MRPS29), with variable clinical presentations ranging from Perrault syndrome (sensorineural hearing loss and ovarian insufficiency) to an early childhood neurometabolic phenotype. Assessment of respiratory-chain function and proteomic profiling of fibroblasts from affected individuals demonstrated reduced MRPS29 protein amounts and, consequently, decreased levels of additional protein components of the mitoribosomal small subunit, as well as an associated combined deficiency of complexes I and IV. Lentiviral transduction of fibroblasts from affected individuals with wild-type DAP3 cDNA increased DAP3 mRNA expression and partially rescued protein levels of MRPS7, MRPS9, and complex I and IV subunits, demonstrating the pathogenicity of the DAP3 variants. Protein modeling suggested that DAP3 disease-associated missense variants can impact ADP binding, and in vitro assays demonstrated that DAP3 variants can consequently reduce both intrinsic and extrinsic apoptotic sensitivity, DAP3 thermal stability, and DAP3 GTPase activity. Our study presents genetic and functional evidence that bi-allelic variants in DAP3 result in a multisystem disorder of combined oxidative phosphorylation deficiency with pleiotropic presentations, consistent with mitochondrial dysfunction.},
}

@article {pmid39495610,
year = {2024},
author = {Tian, X and Li, F and Lin, J and Xu, Y and Tian, K and Gu, L and Zhang, Y and Xu, JR and Wang, Q},
title = {Ancient duplications, multidimensional specializations, and defense role of hexokinases in wheat.},
journal = {The Plant journal : for cell and molecular biology},
volume = {120},
number = {6},
pages = {2456-2467},
doi = {10.1111/tpj.17122},
pmid = {39495610},
issn = {1365-313X},
support = {2022YFD1400100//National Key Research and Development Program of China/ ; 32072505//National Natural Science Foundation of China/ ; 32370212//National Natural Science Foundation of China/ ; },
mesh = {*Triticum/genetics/enzymology/immunology ; *Hexokinase/genetics/metabolism ; *Plant Proteins/genetics/metabolism ; *Gene Duplication ; *Phylogeny ; Gene Expression Regulation, Plant ; Plant Diseases/genetics/immunology/microbiology ; Mitochondria/genetics/enzymology/metabolism ; },
abstract = {Hexokinases (HXKs), which sense and catalyze cellular sugar, play a critical role in the growth and development of various plants, including wheat, a primary source of human calories frequently attacked by fungal pathogens. However, the evolutionary dynamics and functional diversification of HXKs in wheat, particularly their roles in plant defense, remain unclear. Here, we discovered that the wheat hexokinase gene family originated through multiple ancient gene duplications across different plant lineages and has undergone comprehensive, multidimensional functional specialization in gene expression, subcellular localization, enzyme activity, and regulation of plant defense responses. Gene expression analysis suggests that two-thirds of the TaHXK genes are responsive to fungal infection. Subcellular analysis reveals that while six TaHXKs are localized in mitochondria, three TaHXKs from different phylogenetic branches are sorted into other cellular compartments. Notably, biochemical analysis shows that TaHXKs in mitochondria differ in their glucose-catalyzing activity, with TaHXK5 and TaHXK3 exhibiting the highest and lowest enzyme activity, respectively. Consistently, transient expression analysis suggests that TaHXK5 induces various plant defense responses, while TaHXK3 is defective in activating some plant defense responses. Furthermore, inactivation of the glucokinase activity of TaHXK5 compromised its function in defense activation, suggesting that mitochondrial TaHXKs display functional divergence in both enzyme activity and defense-inducing activity that are intrinsically connected. Overall, our findings reveal that the multidimensional specialization events following the ancient duplication events may have shaped the functional diversity of HXKs in wheat, shedding light on their evolutionary dynamics and potentially contributing to the improvement of wheat defense.},
}

*Triticum/genetics/enzymology/immunology
*Hexokinase/genetics/metabolism
*Plant Proteins/genetics/metabolism
*Gene Duplication
*Phylogeny
Gene Expression Regulation, Plant
Plant Diseases/genetics/immunology/microbiology
Mitochondria/genetics/enzymology/metabolism

@article {pmid39693336,
year = {2024},
author = {DeTar, RA and Chustecki, JM and Martinez-Hottovy, A and Ceriotti, LF and Broz, AK and Lou, X and Sanchez-Puerta, MV and Elowsky, C and Christensen, AC and Sloan, DB},
title = {Photosynthetic demands on translational machinery drive retention of redundant tRNA metabolism in plant organelles.},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
volume = {121},
number = {52},
pages = {e2421485121},
doi = {10.1073/pnas.2421485121},
pmid = {39693336},
issn = {1091-6490},
support = {MCB-2322154//NSF (NSF)/ ; MCB-2048407//NSF (NSF)/ ; MCB-1933590//NSF (NSF)/ ; IOS-2208908//NSF (NSF)/ ; N/A//University of Nebraska Foundation/ ; },
mesh = {*Photosynthesis ; *Protein Biosynthesis ; *RNA, Transfer/metabolism/genetics ; *Amino Acyl-tRNA Synthetases/metabolism/genetics ; *Mitochondria/metabolism ; *Plastids/metabolism/genetics ; Organelles/metabolism ; Cytosol/metabolism ; Evolution, Molecular ; },
abstract = {Eukaryotic nuclear genomes often encode distinct sets of translation machinery for function in the cytosol vs. organelles (mitochondria and plastids). This raises questions about why multiple translation systems are maintained even though they are capable of comparable functions and whether they evolve differently depending on the compartment where they operate. These questions are particularly interesting in plants because translation machinery, including aminoacyl-transfer RNA (tRNA) synthetases (aaRS), is often dual-targeted to the plastids and mitochondria. These organelles have different functions, with much higher rates of translation in plastids to supply the abundant, rapid-turnover proteins required for photosynthesis. Previous studies have indicated that plant organellar aaRS evolve more slowly compared to mitochondrial aaRS in eukaryotes that lack plastids. Thus, we investigated the evolution of nuclear-encoded organellar and cytosolic aaRS and tRNA maturation enzymes across a broad sampling of angiosperms, including nonphotosynthetic (heterotrophic) plant species with reduced plastid gene expression, to test the hypothesis that translational demands associated with photosynthesis constrain the evolution of enzymes involved in organellar tRNA metabolism. Remarkably, heterotrophic plants exhibited wholesale loss of many organelle-targeted aaRS and other enzymes, even though translation still occurs in their mitochondria and plastids. These losses were often accompanied by apparent retargeting of cytosolic enzymes and tRNAs to the organelles, sometimes preserving aaRS-tRNA charging relationships but other times creating surprising mismatches between cytosolic aaRS and mitochondrial tRNA substrates. Our findings indicate that the presence of a photosynthetic plastid drives the retention of specialized systems for organellar tRNA metabolism.},
}

*Photosynthesis
*Protein Biosynthesis
*RNA, Transfer/metabolism/genetics
*Amino Acyl-tRNA Synthetases/metabolism/genetics
*Mitochondria/metabolism
*Plastids/metabolism/genetics
Organelles/metabolism
Cytosol/metabolism
Evolution, Molecular

@article {pmid39688921,
year = {2024},
author = {Alvarenga, JP and Stata, M and Sage, RF and Patel, R and das Chagas Mendonca, AM and Torre, FD and Liu, H and Cheng, S and Weake, S and Watanabe, EJ and Viana, PL and de Castro Arruda, IA and Ludwig, M and Alves Delfino Barbosa, JPR and Sage, TL},
title = {Evolutionary diversification of C2 photosynthesis in the grass genus Homolepis (Arthropogoninae).},
journal = {Annals of botany},
volume = {},
number = {},
pages = {},
doi = {10.1093/aob/mcae214},
pmid = {39688921},
issn = {1095-8290},
abstract = {BACKGROUND AND AIMS: To better understand C4 evolution in monocots, we characterized C3-C4 intermediate phenotypes in the grass genus Homolepis (subtribe Arthropogoninae).

METHODS: Carbon isotope ratio (δ13C), leaf gas exchange, mesophyll (M) to bundle sheath (BS) tissue characteristics, organelle size and numbers in M and BS tissue, and tissue distribution of the P-subunit of glycine decarboxylase (GLDP) were determined for five Homolepis species and the C4 grass Mesosetum loliiforme from a phylogenetic sister clade. We generated a transcriptome-based phylogeny for Homolepis and Mesosetum species to interpret physiological and anatomical patterns in an evolutionary context, and to test for hybridization.

KEY RESULTS: Homolepis contains two C3 (H. glutinosa, H. villaricensis), one weaker form of C2 termed sub-C2 (H. isocalycia), and two C2 species (H. longispicula, H. aturensis). Homolepis longispicula and H. aturensis express over 85% of leaf GDC in centripetal mitochondria within the BS, and have increased fractions of leaf chloroplasts, mitochondria and peroxisomes within the BS relative to H. glutinosa. Analysis of leaf gas exchange, cell ultrastructural, and transcript expression show M. loliiforme is a C4 plant of the NADP-malic enzyme subtype. Homolepis is comprised of two sister clades, one containing H. glutinosa and H. villaricensis and the second H. longispicula and H. aturensis. Homolepis isocalycia is of hybrid origin, with parents being H. aturensis and a common ancestor of the C3  Homolepis clade and H. longispicula.

CONCLUSIONS: Photosynthetic activation of BS tissue in the sub-C2 and C2 species of Homolepis is similar to patterns observed in C3-C4 intermediate eudicots, indicating common evolutionary pathways from C3 to C4 photosynthesis in these disparate clades. Hybridization can diversify the C3-C4 intermediate character state and should be considered in reconstructing putative ancestral states using phylogenetic analyses.},
}

@article {pmid39688736,
year = {2024},
author = {Singha, D and Patidar, A and Pal, S and Tyagi, K and Kumar, V},
title = {Mitochondrial genetic diversity of pest and vector species, Frankliniella schultzei (Thripidae: Thripinae).},
journal = {Molecular biology reports},
volume = {52},
number = {1},
pages = {55},
pmid = {39688736},
issn = {1573-4978},
support = {CRG/2023/000498//Science and Engineering Research Board/ ; },
mesh = {Animals ; *Phylogeny ; *Genetic Variation/genetics ; *Haplotypes/genetics ; India ; *Thysanoptera/genetics/classification ; DNA Barcoding, Taxonomic/methods ; Australia ; DNA, Mitochondrial/genetics ; Mitochondria/genetics ; Insect Vectors/genetics/classification ; Bayes Theorem ; Gene Flow ; },
abstract = {BACKGROUND: Frankliniella schultzei (Trybom) is a serious pest and a carrier of tospoviruses in major agricultural crops. This species is a historical and unresolved species complex that contains genetically different cryptic species across the globe.

METHODS AND RESULTS: DNA barcodes were generated from freshly collected specimens of F. schultzei from India and Australia using the sanger sequencing. Seventy-five COI sequences were generated from India and Australia. Moreover, 318 sequences were downloaded (India, Australia, Pakistan, and Africa) from the NCBI GenBank to explore the genetic diversity and phylogeny. The minimum and maximum mean interspecific distance between 393 sequences was found to be 7.97% and 21.50%, respectively. Bayesian and Neighbour joining clustering indicated the presence of five putative species within F. schultzei that had sympatry and allopatry. Moreover, 20 haplotypes and 140 polymorphic sites were identified. The African clade is unique; it does not share haplotypes with any other countries, suggesting it may represent the true F. schultzei. Haplotype network analysis showed shallow gene flow and deep genetic variation between the populations. Signatures of recent population history events were measured using Fu's Fs test and Tajima's D test. Morphometric analysis based on seven characters is also carried out.

CONCLUSION: Phylogeny and genetic distance revealed the presence of five putative species within F. schultzei. On the contrary, morphology does not unequivocally corroborate the phylogenetic results, as morphometric analysis showed overlap among these clades. To resolve F. schultzei species complex, whole genome-based sequencing data are very much necessitated.},
}

Animals
*Phylogeny
*Genetic Variation/genetics
*Haplotypes/genetics
India
*Thysanoptera/genetics/classification
DNA Barcoding, Taxonomic/methods
Australia
DNA, Mitochondrial/genetics
Mitochondria/genetics
Insect Vectors/genetics/classification
Bayes Theorem
Gene Flow

@article {pmid39677574,
year = {2024},
author = {Bettinazzi, S and Liang, J and Rodriguez, E and Bonneau, M and Holt, R and Whitehead, B and Dowling, DK and Lane, N and Camus, MF},
title = {Assessing the role of mitonuclear interactions on mitochondrial function and organismal fitness in natural Drosophila populations.},
journal = {Evolution letters},
volume = {8},
number = {6},
pages = {916-926},
pmid = {39677574},
issn = {2056-3744},
abstract = {Mitochondrial function depends on the effective interactions between proteins and RNA encoded by the mitochondrial and nuclear genomes. Evidence suggests that both genomes respond to thermal selection and promote adaptation. However, the contribution of their epistatic interactions to life history phenotypes in the wild remains elusive. We investigated the evolutionary implications of mitonuclear interactions in a real-world scenario that sees populations adapted to different environments, altering their geographical distribution while experiencing flow and admixture. We created a Drosophila melanogaster panel with replicate native populations from the ends of the Australian east-coast cline, into which we substituted the mtDNA haplotypes that were either predominant or rare at each cline-end, thus creating putatively mitonuclear matched and mismatched populations. Our results suggest that mismatching may impact phenotype, with populations harboring the rarer mtDNA haplotype suffering a trade-off between aerobic capacity and key fitness aspects such as reproduction, growth, and survival. We discuss the significance of mitonuclear interactions as modulators of life history phenotypes in the context of future adaptation and population persistence.},
}

@article {pmid39676593,
year = {2024},
author = {Coronel, FP and Gras, DE and Canal, MV and Roldan, F and Welchen, E and Gonzalez, DH},
title = {Cytochrome c levels link mitochondrial function to plant growth and stress responses through changes in SnRK1 pathway activity.},
journal = {The Plant journal : for cell and molecular biology},
volume = {},
number = {},
pages = {},
doi = {10.1111/tpj.17215},
pmid = {39676593},
issn = {1365-313X},
support = {PICT-2020-0362//Fondo para la Investigación Científica y Tecnológica/ ; PICT-2021-00486//Fondo para la Investigación Científica y Tecnológica/ ; CAI+D-2020//Universidad Nacional del Litoral/ ; },
abstract = {Energy is required for growth as well as for multiple cellular processes. During evolution, plants developed regulatory mechanisms to adapt energy consumption to metabolic reserves and cellular needs. Reduced growth is often observed under stress, leading to a growth-stress trade-off that governs plant performance under different conditions. In this work, we report that plants with reduced levels of the mitochondrial respiratory chain component cytochrome c (CYTc), required for electron transport coupled to oxidative phosphorylation and ATP production, show impaired growth and increased global expression of stress-responsive genes, similar to those observed after inhibiting the respiratory chain or the mitochondrial ATP synthase. CYTc-deficient plants also show activation of the SnRK1 pathway, which regulates growth, metabolism, and stress responses under carbon starvation conditions, even though their carbohydrate levels are not significantly different from wild-type. Notably, loss-of-function of the gene encoding the SnRK1α1 subunit restores the growth of CYTc-deficient plants, as well as autophagy, free amino acid and TOR pathway activity levels, which are affected in these plants. Moreover, increasing CYTc levels decreases SnRK1 pathway activation, reflected in reduced SnRK1α1 phosphorylation, with no changes in total SnRK1α1 protein levels. Under stress imposed by mannitol, the growth of CYTc-deficient plants is relatively less affected than that of wild-type plants, which is also related to the activation of the SnRK1 pathway. Our results indicate that SnRK1 function is affected by CYTc levels, thus providing a molecular link between mitochondrial function and plant growth under normal and stress conditions.},
}

@article {pmid39665281,
year = {2024},
author = {Crino, OL and Wild, KH and Friesen, CR and Leibold, D and Laven, N and Peardon, AY and Recio, P and Salin, K and Noble, DWA},
title = {From eggs to adulthood: sustained effects of early developmental temperature and corticosterone exposure on physiology and body size in an Australian lizard.},
journal = {The Journal of experimental biology},
volume = {227},
number = {24},
pages = {},
doi = {10.1242/jeb.249234},
pmid = {39665281},
issn = {1477-9145},
support = {DP210101152//Australian Research Council/ ; //Australian National University/ ; },
mesh = {Animals ; *Corticosterone/pharmacology ; *Lizards/physiology/growth & development ; *Body Size/drug effects ; *Temperature ; Female ; Ovum/drug effects/physiology ; Australia ; Male ; },
abstract = {Developing animals are increasingly exposed to elevated temperatures as global temperatures rise as a result of climate change. Vertebrates can be affected by elevated temperatures during development directly, and indirectly through maternal effects (e.g. exposure to prenatal glucocorticoid hormones). Past studies have examined how elevated temperatures and glucocorticoid exposure during development independently affect vertebrates. However, exposure to elevated temperatures and prenatal corticosterone could have interactive effects on developing animals that affect physiology and life-history traits across life. We tested interactions between incubation temperature and prenatal corticosterone exposure in the delicate skink (Lampropholis delicata). We treated eggs with high or low doses of corticosterone and incubated eggs at 23°C (cool) or 28°C (warm). We measured the effects of these treatments on development time, body size and survival from hatching to adulthood and on adult hormone levels and mitochondrial respiration. We found no evidence for interactive effects of incubation temperature and prenatal corticosterone exposure on phenotype. However, incubation temperature and corticosterone treatment each independently decreased body size at hatching and these effects were sustained into the juvenile period and adulthood. Lizards exposed to low doses of corticosterone during development had elevated levels of baseline corticosterone as adults. Additionally, lizards incubated at cool temperatures had higher levels of baseline corticosterone and more efficient mitochondria as adults compared with lizards incubated at warm temperatures. Our results show that developmental conditions can have sustained effects on morphological and physiological traits in oviparous lizards but suggest that incubation temperature and prenatal corticosterone do not have interactive effects.},
}

Animals
*Corticosterone/pharmacology
*Lizards/physiology/growth & development
*Body Size/drug effects
*Temperature
Female
Ovum/drug effects/physiology
Australia
Male

@article {pmid39661651,
year = {2024},
author = {Prediger, C and Ferreira, EA and Videira Zorzato, S and Hua-Van, A and Klasson, L and Miller, WJ and Yassin, A and Madi-Ravazzi, L},
title = {Saltational episodes of reticulate evolution in the Drosophila saltans species group.},
journal = {Molecular biology and evolution},
volume = {},
number = {},
pages = {},
doi = {10.1093/molbev/msae250},
pmid = {39661651},
issn = {1537-1719},
abstract = {Phylogenomics reveals reticulate evolution to be widespread across taxa, but whether reticulation is due to low statistical power or it is a true evolutionary pattern remains a field of study. Here, we investigate the phylogeny and quantify reticulation in the Drosophila saltans species group, a Neotropical clade of the subgenus Sophophora comprising 23 species whose relationships have long been problematic. Phylogenetic analyses revealed conflicting topologies between the X chromosome, autosomes and the mitochondria. We extended the ABBA-BABA test of asymmetry in phylogenetic discordance to cases where no "true" species tree could be inferred, and applied our new test (called 2A2B) to whole genome data and to individual loci. We used four strategies, two based on our new assemblies using either conserved genes or ≥50 kb-long syntenic blocks with conserved collinearity across Neotropical Sophophora, and two consisted of windows from pseudo-reference genomes aligned to either an ingroup or outgroup species. Evidence for reticulation varied among the strategies, being lowest in the synteny-based approach, where it did not exceed ∼7% of the blocks in the most conflicting species quartets. High incidences of reticulation were restricted to three nodes on the tree, that coincided with major paleogeographical events in South America. Our results identify possible technical biases in quantifying reticulate evolution and indicate that episodic rapid radiations have played a major role in the evolution of a largely understudied Neotropical clade.},
}

@article {pmid39658314,
year = {2024},
author = {Sørensen, MES and Stiller, ML and Kröninger, L and Nowack, ECM},
title = {Protein import into bacterial endosymbionts and evolving organelles.},
journal = {The FEBS journal},
volume = {},
number = {},
pages = {},
doi = {10.1111/febs.17356},
pmid = {39658314},
issn = {1742-4658},
support = {101061817//H2020 European Research Council/ ; //Deutsche Forschungsgemeinschaft/ ; },
abstract = {Bacterial endosymbionts are common throughout the eukaryotic tree of life and provide a range of essential functions. The intricate integration of bacterial endosymbionts into a host led to the formation of the energy-converting organelles, mitochondria and plastids, that have shaped eukaryotic evolution. Protein import from the host has been regarded as one of the distinguishing features of organelles as compared to endosymbionts. In recent years, research has delved deeper into a diverse range of endosymbioses and discovered evidence for 'exceptional' instances of protein import outside of the canonical organelles. Here we review the current evidence for protein import into bacterial endosymbionts. We cover both 'recently evolved' organelles, where there is evidence for hundreds of imported proteins, and endosymbiotic systems where currently only single protein import candidates are described. We discuss the challenges of establishing protein import machineries and the diversity of mechanisms that have independently evolved to solve them. Understanding these systems and the different independent mechanisms, they have evolved is critical to elucidate how cellular integration arises and deepens at the endosymbiont to organelle interface. We finish by suggesting approaches that could be used in the future to address the open questions. Overall, we believe that the evidence now suggests that protein import into bacterial endosymbionts is more common than generally realized, and thus that there is an increasing number of partnerships that blur the distinction between endosymbiont and organelle.},
}

@article {pmid39536732,
year = {2024},
author = {Xuan, D and Qiang, F and Xu, H and Wang, L and Xia, Y},
title = {Screening for Mitochondrial tRNA Variants in 200 Patients with Systemic Lupus Erythematosus.},
journal = {Human heredity},
volume = {89},
number = {1},
pages = {84-97},
doi = {10.1159/000542357},
pmid = {39536732},
issn = {1423-0062},
mesh = {Humans ; *Lupus Erythematosus, Systemic/genetics ; *RNA, Transfer/genetics ; Female ; Male ; Adult ; DNA, Mitochondrial/genetics ; Middle Aged ; RNA, Mitochondrial/genetics ; Reactive Oxygen Species/metabolism ; Mitochondria/genetics ; Mutation/genetics ; Case-Control Studies ; Phylogeny ; Membrane Potential, Mitochondrial/genetics ; Genetic Predisposition to Disease ; },
abstract = {INTRODUCTION: Systemic lupus erythematosus (SLE) is a common autoimmune disease with unknown etiology. Recently, a growing number of evidence suggested that mitochondrial dysfunctions played active roles in the pathogenesis of SLE, but its detailed mechanism remains largely undetermined. The aim of this study was to analyze the frequencies of mitochondrial tRNA (mt-tRNA) variants in Chinese individuals with SLE.

METHODS: We carried out a mutational screening of mt-tRNA variants in a cohort of 200 patients with SLE and 200 control subjects by PCR-Sanger sequencing. The potential pathogenicity of mt-tRNA variants was evaluated by phylogenetic conservation and haplogroup analyses. In addition, trans-mitochondrial cybrid cell lines were established, and mitochondrial functions including ATP, reactive oxygen species (ROS), mitochondrial DNA (mtDNA) copy number, mitochondrial membrane potential (MMP), superoxide dismutase (SOD), and mt-RNA transcription were analyzed in cybrids with and without these putative pathogenic mt-tRNA variants.

RESULTS: We identified five possible pathogenic variants: tRNAVal G1606A, tRNALeu(UUR) A3243G, tRNAIle A4295G, tRNAGly T9997C, and tRNAThr A15924G that only found in SLE patients but were absent in controls. Interestingly, these variants were located at extremely conserved nucleotides of the corresponding tRNAs and may alter tRNAs' structure and function. Furthermore, cells carrying these tRNA variants had much lower levels of ATP, mtDNA copy number, MMP, and SOD than controls; by contrast, the levels of ROS increased significantly (p < 0.05 for all). Furthermore, a significant reduction in mt-ND1, ND2, ND3, ND5, and A6 mRNA expression was observed in cells with these mt-tRNA variants, while compared with controls. Thus, failures in tRNA metabolism caused by these variants would impair mitochondrial translation and subsequently lead to mitochondrial dysfunction that was involved in the progression and pathogenesis of SLE.

CONCLUSIONS: Our study suggested that mt-tRNA variants were important causes for SLE, and screening for mt-tRNA pathogenic variants was recommended for early detection and prevention for this disorder.},
}

Humans
*Lupus Erythematosus, Systemic/genetics
*RNA, Transfer/genetics
Female
Male
Adult
DNA, Mitochondrial/genetics
Middle Aged
RNA, Mitochondrial/genetics
Reactive Oxygen Species/metabolism
Mitochondria/genetics
Mutation/genetics
Case-Control Studies
Phylogeny
Membrane Potential, Mitochondrial/genetics
Genetic Predisposition to Disease

@article {pmid39648544,
year = {2024},
author = {Acharya, TK and Mahapatra, P and Kumar, S and Dubey, NK and Rajalaxmi, S and Ghosh, A and Kumar, A and Goswami, C},
title = {Conserved and Unique Mitochondrial Target Sequence of TRPV4 Can Independently Regulate Mitochondrial Functions.},
journal = {Proteins},
volume = {},
number = {},
pages = {},
doi = {10.1002/prot.26772},
pmid = {39648544},
issn = {1097-0134},
support = {BT/PR8004/MED/30/988/2013//Department of Biotechnology (DBT), Ministry of science and Technology/ ; //National Institute of Science Education and Research/ ; },
abstract = {Though mitochondria have their own genome and protein synthesis machineries, the majority of the mitochondrial proteins are actually encoded by the nuclear genome. Most of these mitochondrial proteins are imported into specific compartments of the mitochondria due to their mitochondrial target sequence (MTS). Unlike the nuclear target sequence, the MTS of most of the mitochondrial localized proteins remain poorly understood, mainly due to their variability, heterogeneity, unconventional modes of action, mitochondrial potential-dependent transport, and other complexities. Recently, we reported that transient receptor potential vanilloid subtype 4 (TRPV4), a thermosensitive cation channel, is physically located at the mitochondria. Here we characterize a small segment (AA 592-630) located at the TM4-loop4-TM5 segment of TRPV4 that acts as a novel MTS. The same region remains highly conserved in all vertebrates and contains a large number of point mutations each of which causes an diverse spectrum of diseases in human. Using confocal and super-resolution microscopy, we show that this MTS of TRPV4 or its mutants localizes to the mitochondria independently and also induces functional and quantitative changes in the mitochondria. By using conformal microscopy, we could detect the presence of the MTS region within the isolated mitochondria. These findings may be important to understand the complexity of MTS and TRPV4-induced channelopathies better.},
}

@article {pmid39633470,
year = {2024},
author = {Atherton, W and Ambrose, L and Wisdom, J and Lessard, BD and Kurucz, N and Webb, CE and Beebe, NW},
title = {Nuclear and mitochondrial population genetics of the Australasian arbovirus vector Culex annulirostris (Skuse) reveals strong geographic structure and cryptic species.},
journal = {Parasites & vectors},
volume = {17},
number = {1},
pages = {501},
pmid = {39633470},
issn = {1756-3305},
support = {RG 18-19//Australian Biological Resources Study, Australia's Department of Climate Change, Energy, the Environment and Water/ ; },
mesh = {Animals ; *Culex/genetics/classification/virology ; *Microsatellite Repeats/genetics ; *Mosquito Vectors/genetics/classification/virology ; *Genetic Variation ; Australia ; *DNA, Mitochondrial/genetics ; Genetics, Population ; Arboviruses/genetics ; Australasia/epidemiology ; Papua New Guinea ; Electron Transport Complex IV/genetics ; Haplotypes ; Phylogeny ; Mitochondria/genetics ; },
abstract = {BACKGROUND: The mosquito Culex annulirostris Skuse (Diptera: Culicidae) is an important arbovirus vector in Australasia. It is part of the Culex sitiens subgroup that also includes Cx. palpalis and Cx. sitiens. Single locus mitochondrial and nuclear DNA sequencing studies suggest that Cx. annulirostris consists of a complex of at least two species. We tested this hypothesis by analysing both nuclear microsatellite data and additional mitochondrial sequence data to describe the population genetics of Cx. annulirostris through Australia, Papua New Guinea (PNG) and the Solomon Archipelago.

METHODS: Twelve novel microsatellite markers for Cx. annulirostris were developed and used on over 500 individuals identified as Cx. annulirostris by molecular diagnostics. Ten of the 12 microsatellites then used for analysis using Discriminant Analysis of Principal Components, a Bayesian clustering software, STRUCTURE, along with estimates of Jost's D statistic that is similar to FST but better suited to microsatellite data. Mitochondrial cytochrome oxidase I (COI) DNA sequence were also generated complementing previous work and analysed for sequence diversity (Haplotype diversity, Hd and Pi, π), Tadjima's D, and pairwise FST between populations. An allele specific molecular diagnostic with an internal control was developed.

RESULTS: We confirm the existence of multiple genetically and geographically restricted populations. Within mainland Australia, our findings show that Cx. annulirostris consists of two genetically and geographically distinct populations. One population extends through northern Australia and into the south-east coast of Queensland and New South Wales (NSW). The second Australian population occurs through inland NSW, Victoria, South Australia, extending west to southern Western Australia. These two Australian populations show evidence of possible admixture in central Australia and far north Queensland. Australia's Great Dividing Range that runs down southeast Australia presents a strong gene-flow barrier between these two populations which may be driven by climate, elevation or river basins. In PNG we find evidence of reproductive isolation between sympatric cryptic species occurring through PNG and Australia's northern Cape York Peninsula. A PCR-based molecular diagnostic was developed to distinguish these two cryptic species.

CONCLUSION: This study adds to the growing body of work suggesting that the taxon presently known as Cx. annulirostris now appears to consist of at least two cryptic species that co-occur in northern Australia and New Guinea and can be distinguished by a ITS1 PCR diagnostic. The Solomon Islands population may also represent a distinct species but in light its geographic isolation and lack of sympatry with other species would require further study. Additionally, the mitochondrial and nuclear DNA evidence of population structure between geographic regions within Australia appears latitudinal and elevational driven and may suggest an additional subspecies in that hybridise where they overlap.},
}

Animals
*Culex/genetics/classification/virology
*Microsatellite Repeats/genetics
*Mosquito Vectors/genetics/classification/virology
*Genetic Variation
Australia
*DNA, Mitochondrial/genetics
Genetics, Population
Arboviruses/genetics
Australasia/epidemiology
Papua New Guinea
Electron Transport Complex IV/genetics
Haplotypes
Phylogeny
Mitochondria/genetics

@article {pmid39629328,
year = {2024},
author = {Qi, X and Wang, Z and Lin, Y and Guo, Y and Dai, Z and Wang, Q},
title = {Elucidation and engineering mitochondrial respiratory-related genes for improving bioethanol production at high temperature in Saccharomyces cerevisiae.},
journal = {Engineering microbiology},
volume = {4},
number = {2},
pages = {100108},
pmid = {39629328},
issn = {2667-3703},
abstract = {Industrial manufacturing of bioproducts, especially bioethanol, can benefit from high-temperature fermentation, which requires the use of thermotolerant yeast strains. Mitochondrial activity in yeast is closely related to its overall metabolism. However, the mitochondrial respiratory changes in response to adaptive thermotolerance are still poorly understood and have been rarely utilized for developing thermotolerant yeast cell factories. Here, adaptive evolution and transcriptional sequencing, as well as whole-genome-level gene knockout, were used to obtain a thermotolerant strain of Saccharomyces cerevisiae. Furthermore, thermotolerance and bioethanol production efficiency of the engineered strain were examined. Physiological evaluation showed the boosted fermentation capacity and suppressed mitochondrial respiratory activity in the thermotolerant strain. The improved fermentation produced an increased supply of adenosine triphosphate required for more active energy-consuming pathways. Transcriptome analysis revealed significant changes in the expression of the genes involved in the mitochondrial respiratory chain. Evaluation of mitochondria-associated gene knockout confirmed that ADK1, DOC1, or MET7 were the key factors for the adaptive evolution of thermotolerance in the engineered yeast strain. Intriguingly, overexpression of DOC1 with TEF1 promoter regulation led to a 10.1% increase in ethanol production at 42 °C. The relationships between thermotolerance, mitochondrial activity, and respiration were explored, and a thermotolerant yeast strain was developed by altering the expression of mitochondrial respiration-related genes. This study provides a better understanding on the physiological mechanism of adaptive evolution of thermotolerance in yeast.},
}

@article {pmid39623987,
year = {2024},
author = {Zhang, Y and Zang, C and Pan, X and Gong, M and Liu, H},
title = {[Population genetic diversity of Culex tritaeniorhynchus in Jining City of Shandong Province based on the mitochondrial cytochrome C oxidase I gene].},
journal = {Zhongguo xue xi chong bing fang zhi za zhi = Chinese journal of schistosomiasis control},
volume = {36},
number = {5},
pages = {466-473},
doi = {10.16250/j.32.1915.2024119},
pmid = {39623987},
issn = {1005-6661},
support = {tsqn202312373//Shandong Provincial Taishan Scholar Program/ ; ZR2R2020KH001//Key Project of Natural Science Foundation t of Shandong Province/ ; 230726153807227//University-Industry Collaborative Education Program of Ministry of Education/ ; },
mesh = {Animals ; *Culex/genetics ; *Electron Transport Complex IV/genetics ; *Genetic Variation ; China ; Haplotypes ; Phylogeny ; Female ; Mitochondria/genetics ; },
abstract = {OBJECTIVE: To understand the genetic basis of the adaptation of Culex tritaeniorhynchus to different environmental ecology in Jining City, Shandong Province, so as to provide insights into understanding of the population structure or isolation pattern of Cx. tritaeniorhynchus in the city.

METHODS: Seven sampling sites were selected from urban, suburban and rural areas of Jining City, Shandong Province from June to August 2023, and mosquitoes were collected using mosquito-trapping lamps. All collected adult mosquitoes were identified morphologically. Genomic DNA was extracted from a single female Cx. tritaeniorhynchus mosquito, and the mitochondrial cytochrome C oxidase I (COI) gene was amplified using a PCR assay, sequenced and subjected to molecular identification. The number of haplotypes, haplotype diversity (Hd), nucleotide diversity (Pi), and average number of nucleotide differences (K) of Cx. tritaeniorhynchus DNA sequences were estimated among different sampling sites using the software DnaSP 6, and a neutrality test was performed. The fixation index (FST), and gene flow (number of migrants, Nm) of Cx. tritaeniorhynchus populations were calculated using the software Arlequin 3.5.2, and subjected to analysis of molecular variance (AMOVA). In addition, a haplotype network diagrams and a phylogenetic tree of Cx. tritaeniorhynchus populations were created using the software PopART and MEGA 11, respectively.

RESULTS: A total of 420 sequences were successfully amplified from the COI gene of Cx. tritaeniorhynchus samples collected from 7 sampling sites in Jining City, and a gene fragment sequence with a length of 603 bp was obtained, with 55 variable sites and 46 haplotypes and without insertion or deletion mutations. Of the 46 haplotypes, H01 was the dominant shared haplotype, and the haplotype frequency increased gradually from urban areas (34.00%) to rural areas (47.00%). The mean Hd, Pi and K values of Cx. tritaeniorhynchus COI genes were 0.814, 0.024 and 14.129, 0.489, 0.016 and 7.941 and 0.641, 0.016 and 10.393 in suburban, urban, and rural areas, respectively, with the highest population diversity of Cx. tritaeniorhynchus in suburban areas and the lowest in urban areas. Paired FST analysis among different types of sampling sites showed that the mean FST value was 0.029 between urban and suburban areas, indicating more frequent inter-population communication. AMOVA revealed that the percentage of intra-population variation (95.74%) was higher than that of inter-population variation (4.26%). Neutrality tests showed deviation from neutrality in Cx. tritaeniorhynchus populations collected from Nanyang Township (Tajima's D = 2.793, Fu's Fs = 6.429, both P values < 0.05). In addition, the mismatch distribution curves of Cx. tritaeniorhynchus COI gene appeared bimodal or multimodal patterns in Jining City, indicating a relatively stable overall population size.

CONCLUSIONS: The mitochondrial COI gene may be used as a molecular marker to investigate the population genetic diversity of Cx. tritaeniorhynchus. The population genetic diversity of Cx. tritaeniorhynchus is higher in the suburban areas of Jining City than in rural and urban areas, and there are frequent genetic exchanges between Cx. tritaeniorhynchus populations from urban and suburban areas.},
}

Animals
*Culex/genetics
*Electron Transport Complex IV/genetics
*Genetic Variation
China
Haplotypes
Phylogeny
Female
Mitochondria/genetics

@article {pmid39623304,
year = {2024},
author = {Zhang, C and Rasool, A and Qi, H and Zou, X and Wang, Y and Wang, Y and Wang, Y and Liu, Y and Yu, Y},
title = {Comprehensive analysis of the first complete mitogenome and plastome of a traditional Chinese medicine Viola diffusa.},
journal = {BMC genomics},
volume = {25},
number = {1},
pages = {1162},
pmid = {39623304},
issn = {1471-2164},
mesh = {*Genome, Mitochondrial ; *Medicine, Chinese Traditional ; *Viola/genetics ; Phylogeny ; Base Composition ; RNA, Transfer/genetics ; Genome, Plastid ; Codon Usage ; },
abstract = {BACKGROUND: Viola diffusa is used in the formulation of various Traditional Chinese Medicines (TCMs), including antiviral, antimicrobial, antitussive, and anti-inflammatory drugs, due to its richness in flavonoids and triterpenoids. The biosynthesis of these compounds is largely mediated by cytochrome P450 enzymes, which are primarily located in the membranes of mitochondria and the endoplasmic reticulum.

RESULTS: This study presents the complete assembly of the mitogenome and plastome of Viola diffusa. The circular mitogenome spans 474,721 bp with a GC content of 44.17% and encodes 36 unique protein-coding genes, 21 tRNA, and 3 rRNA. Except for the RSCU values of 1 observed for the start codon (AUG) and tryptophan (UGG), the mitochondrial protein-coding genes exhibited a codon usage bias, with most estimates deviating from 1, similar to patterns observed in closely related species. Analysis of repetitive sequences in the mitogenome demonstrated potential homologous recombination mediated by these repeats. Sequence transfer analysis revealed 24 homologous sequences shared between the mitogenome and plastome, including nine full-length genes. Collinearity was observed among Viola diffusa species within the other members of Malpighiales order, indicated by the presence of homologous fragments. The length and arrangement of collinear blocks varied, and the mitogenome exhibited a high frequency of gene rearrangement.

CONCLUSIONS: We present the first complete assembly of the mitogenome and plastome of Viola diffusa, highlighting its implications for pharmacological, evolutionary, and taxonomic studies. Our research underscores the multifaceted importance of comprehensive mitogenome analysis.},
}

*Genome, Mitochondrial
*Medicine, Chinese Traditional
*Viola/genetics
Phylogeny
Base Composition
RNA, Transfer/genetics
Genome, Plastid
Codon Usage

@article {pmid39515725,
year = {2024},
author = {Zhou, J and Wang, P and Wang, Y and Zhang, J and He, X and Wang, L},
title = {Genome-wide identification and expression analysis of SpUGE gene family and heterologous expression-mediated Arabidopsis thaliana tolerance to Cd stress.},
journal = {International journal of biological macromolecules},
volume = {282},
number = {Pt 5},
pages = {137358},
doi = {10.1016/j.ijbiomac.2024.137358},
pmid = {39515725},
issn = {1879-0003},
mesh = {*Arabidopsis/genetics ; *Cadmium/toxicity ; *Gene Expression Regulation, Plant ; *Stress, Physiological/genetics ; *Cell Wall/metabolism/genetics ; *Plants, Genetically Modified/genetics ; Multigene Family ; Plant Proteins/genetics/metabolism ; Salix/genetics/metabolism ; Genome, Plant ; Phylogeny ; Polysaccharides/metabolism ; Gene Expression Profiling ; },
abstract = {The UDP-glucose 4-epimerase (UGE) enzyme plays a critical role in plant growth and responses to abiotic stressors, such as heavy metal exposure. However, UGE-mediated remodeling of cell wall polysaccharides in response to these stressors remains poorly understood in willow. This study investigated the structure, function, and expression patterns of the UGE gene family in willow, focusing on cadmium treatment to elucidate how SpUGE1 enhances Cd resistance. Six SpUGE genes were identified through whole-genome sequencing and bioinformatics analysis, and they were mapped across five chromosomes. Quantitative PCR analysis revealed that, with the exception of SpUGE3, all genes showed their highest relative expression in the leaves. Under Cd treatment, members of the SpUGE gene family displayed varying levels of responsiveness, with SpUGE1 showing a marked increase in expression over time. In transgenic Arabidopsis thaliana overexpressing SpUGE1, the cellulose, hemicellulose, lignin, and pectin content significantly increased, with cellulose levels rising by >50 % and pectin by approximately 30 %. This overexpression conferred enhanced Cd resistance by increasing cell wall thickness through elevated cell wall polysaccharides, which reduced Cd uptake. Consequently, Cd content in the cell wall, chloroplasts, and mitochondria was significantly lower than that in wild-type plants, reducing cellular damage and improving Cd resistance. Overall, this study provides valuable theoretical and experimental insights into the role of the SpUGE1 gene family in willow.},
}

*Arabidopsis/genetics
*Cadmium/toxicity
*Gene Expression Regulation, Plant
*Stress, Physiological/genetics
*Cell Wall/metabolism/genetics
*Plants, Genetically Modified/genetics
Multigene Family
Plant Proteins/genetics/metabolism
Salix/genetics/metabolism
Genome, Plant
Phylogeny
Polysaccharides/metabolism
Gene Expression Profiling

@article {pmid39617091,
year = {2024},
author = {Zhao, J and Liang, ZL and Fang, SL and Li, RJ and Huang, CJ and Zhang, LB and Robison, T and Zhu, ZM and Cai, WJ and Yu, H and He, ZR and Zhou, XM},
title = {Phylogenomics of Paragymnopteris (Cheilanthoideae, Pteridaceae): Insights from plastome, mitochondrial, and nuclear datasets.},
journal = {Molecular phylogenetics and evolution},
volume = {},
number = {},
pages = {108253},
doi = {10.1016/j.ympev.2024.108253},
pmid = {39617091},
issn = {1095-9513},
abstract = {Previous studies have shown that at least six genera of the Cheilanthoideae, a subfamily of the fern family Pteridaceae, may not be monophyletic. In these non-monophyletic genera, the Old-World genus Paragymnopteris including approximately five species have long been controversial. In this study, with an extensive taxon sampling of Paragymnopteris, we assembled 19 complete plastomes of all recognized Paragymnopteris species, plastomes of Pellaea (3 species) and Argyrochosma (1 species), as well as transcriptomes from Paragymnopteris (6 species) and Argyrochosma (1 species). We conducted a comprehensive and systematic phylogenomic analysis focusing on the contentious relationships among the genus of Paragymnopteris through 9 plastid makers, the plastomes, mitochondria, nuclear ribosomal cistron genomes, and single-copy nuclear genes. Moreover, we further combined distribution, ploidy, and morphological features to investigate the evolution of Paragymnopteris. The backbone of Paragymnopteris was resolved consistently in the nuclear and plastid phylogenies. Our major results include: (1) Paragymnopteris is not monophyletic including two fully supported clades; (2) confirming that Paragymnopteris delavayi var. intermedia is a close relative of P. delavayi instead of P. marantae var. marantae; (3) the chromosome base number may not be a stable trait which has previously been used as an important character to divide Paragymnopteris into two groups; and (4) gene flow or introgression might be the main reason for the gene trees conflict of Paragymnopteris, but both gene flow and ILS might simultaneously and/or cumulatively act on the conflict of core pellaeids. The robust phylogeny of Paragymnopteris presented here will help us for the future studies of the arid to semi-arid ferns of Cheilanthoideae at the evolutionary, physiological, developmental, and omics-based levels.},
}

@article {pmid39547447,
year = {2025},
author = {Xin, C and Wang, J and Chi, J and Xu, Y and Liang, R and Jian, L and Wang, L and Guo, J},
title = {Intragenic cytosine methylation modification regulates the response of SUCLα1 to lower temperature in Solanaceae.},
journal = {Plant science : an international journal of experimental plant biology},
volume = {350},
number = {},
pages = {112320},
doi = {10.1016/j.plantsci.2024.112320},
pmid = {39547447},
issn = {1873-2259},
mesh = {*Cytosine/metabolism ; *Cold Temperature ; Plant Proteins/genetics/metabolism ; DNA Methylation ; Solanum tuberosum/genetics/metabolism ; Phylogeny ; Gene Expression Regulation, Plant ; Solanaceae/genetics/metabolism/physiology ; Nicotiana/genetics ; },
abstract = {The tricarboxylic acid cycle (TCAC) is a fundamental metabolic process governing matter and energy in plant cells, playing an indispensable role. However, its involvement in responding to low temperature stress in potato remains poorly understood. Previous studies have identified succinyl-CoA ligase (SUCL), which catalyzes the phosphorylation of TCAC substrates, as a gene associated with lower temperatures. Nevertheless, its function in potato's response to lower temperatures remains unclear. Phylogenetic analysis has revealed that Solanum tuberosum possesses α and β subunits of SUCL, which cluster with those of Solanum lycopersicum, Nicotiana tabacum and Nicotiana benthamiana. Further investigation has shown that StSUCLα1 is predominantly located within mitochondria. Low temperatures induce methylation modification alterations at 11 intragenic cytosine sites and lead to changes in StSUCLα1 expression levels. Correlation analysis suggests that alterations in intragenic cytosine methylation sites of SUCLα1 may be associated with MET1. Knocking down NbSUCLα1, the homologous gene of StSUCLα1 in N. benthamiana, results in increased susceptibility to low temperature stress in plants. In summary, we have confirmed that SUCLα1 is a key gene modulated by intragenic cytosine methylation in response to lower temperatures, providing a novel target for genetic breeding aimed at enhancing potato tolerance to low temperature stress.},
}

*Cytosine/metabolism
*Cold Temperature
Plant Proteins/genetics/metabolism
DNA Methylation
Solanum tuberosum/genetics/metabolism
Phylogeny
Gene Expression Regulation, Plant
Solanaceae/genetics/metabolism/physiology
Nicotiana/genetics

@article {pmid39226612,
year = {2024},
author = {Forbes, K and Barrera, M and Nielsen-Roine, K and Hersh, E and Janes, J and Harrower, W and Gorrell, J},
title = {Stabilizing selection and mitochondrial heteroplasmy in the Canada lynx (Lynx canadensis).},
journal = {Genome},
volume = {67},
number = {12},
pages = {493-502},
doi = {10.1139/gen-2023-0094},
pmid = {39226612},
issn = {1480-3321},
mesh = {*Lynx/genetics ; Animals ; *Haplotypes ; *DNA, Mitochondrial/genetics ; Heteroplasmy/genetics ; Selection, Genetic ; Polymorphism, Single Nucleotide ; Mitochondria/genetics ; Genome, Mitochondrial ; Phylogeny ; Canada ; },
abstract = {Mitochondrial DNA is commonly used in population genetic studies to investigate spatial structure, intraspecific variation, and phylogenetic relationships. The control region is the most rapidly evolving and largest non-coding region, but its analysis can be complicated by heteroplasmic signals of genome duplication in many mammals, including felids. Here, we describe the presence of heteroplasmy in the control region of Canada lynx (Lynx canadensis) through intra-individual sequence variation. Our results demonstrate multiple haplotypes of varying length in each lynx, resulting from different copy numbers of the repetitive sequence RS-2 and suggest possible heteroplasmic single nucleotide polymorphisms in both repetitive sequences RS-2 and RS-3. Intra-individual variation was only observed in the repetitive sequences while inter-individual variation was detected in the flanking regions outside of the repetitive sequences, indicating that heteroplasmic mutations are restricted to these repeat regions. Although each lynx displayed multiple haplotypes of varying length, we found the most common variant contained three complete copies of the RS-2 repeat unit, suggesting copy number is regulated by stabilizing selection. While genome duplication offers potential for increased diversity, heteroplasmy may lead to a selective advantage or detriment in the face of mitochondrial function and disease, which could have significant implications for wildlife populations experiencing decline (e.g., bottlenecks) as a result of habitat modification or climate change.},
}

*Lynx/genetics
Animals
*Haplotypes
*DNA, Mitochondrial/genetics
Heteroplasmy/genetics
Selection, Genetic
Polymorphism, Single Nucleotide
Mitochondria/genetics
Genome, Mitochondrial
Phylogeny
Canada

@article {pmid39605599,
year = {2024},
author = {Nolbrant, S and Wallace, JL and Ding, J and Zhu, T and Sevetson, JL and Kajtez, J and Baldacci, IA and Corrigan, EK and Hoglin, K and McMullen, R and Schmitz, MT and Breevoort, A and Swope, D and Wu, F and Pavlovic, BJ and Salama, SR and Kirkeby, A and Huang, H and Schaefer, NK and Pollen, AA},
title = {Interspecies Organoids Reveal Human-Specific Molecular Features of Dopaminergic Neuron Development and Vulnerability.},
journal = {bioRxiv : the preprint server for biology},
volume = {},
number = {},
pages = {},
doi = {10.1101/2024.11.14.623592},
pmid = {39605599},
issn = {2692-8205},
abstract = {The disproportionate expansion of telencephalic structures during human evolution involved tradeoffs that imposed greater connectivity and metabolic demands on midbrain dopaminergic neurons. Despite the central role of dopaminergic neurons in human-enriched disorders, molecular specializations associated with human-specific features and vulnerabilities of the dopaminergic system remain unexplored. Here, we establish a phylogeny-in-a-dish approach to examine gene regulatory evolution by differentiating pools of human, chimpanzee, orangutan, and macaque pluripotent stem cells into ventral midbrain organoids capable of forming long-range projections, spontaneous activity, and dopamine release. We identify human-specific gene expression changes related to axonal transport of mitochondria and reactive oxygen species buffering and candidate cis- and trans -regulatory mechanisms underlying gene expression divergence. Our findings are consistent with a model of evolved neuroprotection in response to tradeoffs related to brain expansion and could contribute to the discovery of therapeutic targets and strategies for treating disorders involving the dopaminergic system.},
}

@article {pmid39604839,
year = {2024},
author = {Liao, R and Yao, J and Zhang, Y and Liu, Y and Pan, H and Han, B and Song, C},
title = {MYB transcription factors in Peucedanum Praeruptorum Dunn: the diverse roles of the R2R3-MYB subfamily in mediating coumarin biosynthesis.},
journal = {BMC plant biology},
volume = {24},
number = {1},
pages = {1135},
pmid = {39604839},
issn = {1471-2229},
support = {2023YFC3503804//National Key R&D Program of China/ ; TCMRPSU-2022-04//Open Fund of Anhui Engineering Laboratory for Conservation and Sustainable Utilization of Traditional Chinese Medicine Resource/ ; TCMADM-2023-03//Open Fund of the Anhui Dabieshan Academy of Traditional Chinese Medicine/ ; },
mesh = {*Transcription Factors/metabolism/genetics ; *Plant Proteins/genetics/metabolism ; *Apiaceae/genetics/metabolism ; *Phylogeny ; *Coumarins/metabolism ; Gene Expression Regulation, Plant ; Gene Expression Profiling ; },
abstract = {BACKGROUND: The MYB superfamily (v-myb avian myeloblastosis viral oncogene homolog) plays a role in plant growth and development, environmental stress defense, and synthesis of secondary metabolites. Little is known about the regulatory function of MYB genes in Peucedanum praeruptorum Dunn, although many MYB family members, especially R2R3-MYB genes, have been extensively studied in model plants.

RESULTS: A total of 157 R2R3-MYB transcription factors from P. praeruptorum were identified using bioinformatics analysis. Comprehensive analyses including chromosome location, microsynteny, gene structure, conserved motif, phylogenetic tree, and conserved domain were further performed. The length of the 157 transcription factors ranged from 120 to 1,688 amino acids (molecular weight between 14.21 and 182.69 kDa). All proteins were hydrophilic. Subcellular localization predictions showed that 155 PpMYB proteins were localized in the nucleus, with PpMYB12 and PpMYB157 localized in the chloroplasts and mitochondria, respectively. Ten conserved motifs were identified in the PpMYBs, all of which contained typical MYB domains. Transcriptome analysis identified 47,902 unigenes. Kyoto Encyclopedia of Genes and Genomes analysis revealed 136 pathways, of which 524 genes were associated with the phenylpropanoid pathway. Differential expressed genes (DEGs) before and after bolting showed that 11 genes were enriched in the phenylpropanoid pathway. Moreover, the expression patterns of transcription genes were further verified by qRT-PCR. With high-performance liquid chromatography (HPLC), 8 coumarins were quantified from the root, stem, and leaf tissue samples of P. praeruptorum at different stages. Praeruptorin A was found in both roots and leaves before bolting, whereas praeruptorin B was mainly concentrated in the roots, and the content of both decreased in the roots and stems after bolting. Praeruptorin E content was highest in the leaves and increased with plant growth. The correlation analysis between transcription factors and coumarin content showed that the expression patterns of PpMYB3 and PpMYB103 in roots align with the accumulation trends of praeruptorin A, praeruptorin B, praeruptorin E, scopoletin, and isoscopoletin, which declined in content after bolting, suggesting that these genes may positively regulate the biosynthesis of coumarins. Eleven distinct metabolites and 48 DEGs were identified. Correlation analysis revealed that the expression of all DEGs were significantly related to the accumulation of coumarin metabolites, indicating that these genes are involved in the regulation of coumarin biosynthesis.

CONCLUSIONS: R2R3-MYB transcription factors may be involved in the synthesis of coumarin. Our findings provide basic data and a rationale for future an in-depth studies on the role of R2R3-MYB transcription factors in the growth and regulation of coumarin synthesis.},
}

*Transcription Factors/metabolism/genetics
*Plant Proteins/genetics/metabolism
*Apiaceae/genetics/metabolism
*Phylogeny
*Coumarins/metabolism
Gene Expression Regulation, Plant
Gene Expression Profiling

@article {pmid39603112,
year = {2024},
author = {Haro, R and Walunjkar, N and Jorapur, S and Slamovits, CH},
title = {Long-read DNA sequencing reveals the organization of the mitochondrial genome in the early-branching dinoflagellate Oxyrrhis marina.},
journal = {Protist},
volume = {175},
number = {6},
pages = {126071},
doi = {10.1016/j.protis.2024.126071},
pmid = {39603112},
issn = {1618-0941},
abstract = {The mitochondrial genomes of dinoflagellate protists are remarkable for their highly fragmented and heterogeneous organization. Early attempts to determine their structure without 'next-generation' DNA sequencing failed to recover a defined genome. Still, it coincided in showing that the proteins coding genes, three in total, and parts of the ribosomal RNA genes were spread across a diffuse assortment of small linear fragments. In contrast, a recent study employed Illumina sequencing to assemble a 326 kbp long single-molecule, circular mitochondrial genome in the symbiotic dinoflagellate Breviolum minutum. Here, we used a combination of short- and long-read massively-parallel DNA sequencing to analyze further the mitochondrial DNA of the early-branching dinoflagellate Oxyrrhis marina. We found that the mitochondrial genome of O. marina consists of 3 linear chromosomes sized 15.9, 33.8 and 40.6 kbp for a total of 90.3 kbp. It contains the cox1, cox3 and cob genes, the same three proteins encoded in the mitochondrion of all myzozoans (Apicomplexa and Dinophyceae), some fragments of ribosomal RNA genes as well as many non-functional gene fragments and extensive noncoding DNA. Our analysis unveiled segments syntenic patterns and rearrangements encompassing coding and non-coding regions, suggesting that recombination is a pervasive process driving the evolution of these genomes.},
}

@article {pmid39596209,
year = {2024},
author = {Wang, X and Wang, Z and Yang, F and Lin, R and Liu, T},
title = {Assembly, Annotation, and Comparative Analysis of Mitochondrial Genomes in Trichoderma.},
journal = {International journal of molecular sciences},
volume = {25},
number = {22},
pages = {},
doi = {10.3390/ijms252212140},
pmid = {39596209},
issn = {1422-0067},
support = {XTCX2022NYB12//Collaborative Innovation Center Project of Hainan University/ ; },
mesh = {*Genome, Mitochondrial ; *Phylogeny ; *Trichoderma/genetics ; *Molecular Sequence Annotation ; RNA, Transfer/genetics ; Base Composition/genetics ; Evolution, Molecular ; Introns/genetics ; },
abstract = {Trichoderma is a widely studied ascomycete fungal genus, including more than 400 species. However, genetic information on Trichoderma is limited, with most species reporting only DNA barcodes. Mitochondria possess their own distinct DNA that plays a pivotal role in molecular function and evolution. Here, we report 42 novel mitochondrial genomes (mitogenomes) combined with 18 published mitogenomes of Trichoderma. These circular mitogenomes exhibit sizes of 26,276-94,608 bp, typically comprising 15 core protein-coding genes (PCGs), 2 rRNAs, and 16-30 tRNAs; however, the number of endonucleases and hypothetical proteins encoded in the introns of PCGs increases with genome size enlargement. According to the result of phylogenetic analysis of the whole mitogenome, these strains diverged into six distinct evolutionary branches, supported by the phylogeny based on 2830 single-copy nuclear genes. Comparative analysis revealed that dynamic Trichoderma mitogenomes exhibited variations in genome size, gene number, GC content, tRNA copy, and intron across different branches. We identified three mutation hotspots near the regions encoding nad3, cox2, and nad5 that caused major changes in the mitogenomes. Evolutionary analysis revealed that atp9, cob, nad4L, nad5, and rps3 have been influenced by positive selection during evolution. This study provides a valuable resource for exploring the important roles of the genetic and evolutionary dynamics of Trichoderma mitogenome in the adaptive evolution of biocontrol fungi.},
}

*Genome, Mitochondrial
*Phylogeny
*Trichoderma/genetics
*Molecular Sequence Annotation
RNA, Transfer/genetics
Base Composition/genetics
Evolution, Molecular
Introns/genetics

@article {pmid39596001,
year = {2024},
author = {Wang, H and Charagh, S and Dong, N and Lu, F and Wang, Y and Cao, R and Ma, L and Wang, S and Jiao, G and Xie, L and Shao, G and Sheng, Z and Hu, S and Zhao, F and Tang, S and Chen, L and Hu, P and Wei, X},
title = {Genome-Wide Analysis of Heat Shock Protein Family and Identification of Their Functions in Rice Quality and Yield.},
journal = {International journal of molecular sciences},
volume = {25},
number = {22},
pages = {},
doi = {10.3390/ijms252211931},
pmid = {39596001},
issn = {1422-0067},
support = {2023YFF1000500//National Key Research and Development Program of China/ ; 32372099//National Natural Science Foundation of China/ ; 32188102//National Natural Science Foundation of China/ ; },
mesh = {*Oryza/genetics/metabolism/growth & development ; *Heat-Shock Proteins/genetics/metabolism ; *Plant Proteins/genetics/metabolism ; *Gene Expression Regulation, Plant ; Multigene Family ; Genome, Plant ; Phylogeny ; Chromosomes, Plant/genetics ; Genome-Wide Association Study ; },
abstract = {Heat shock proteins (Hsps), acting as molecular chaperones, play a pivotal role in plant responses to environmental stress. In this study, we found a total of 192 genes encoding Hsps, which are distributed across all 12 chromosomes, with higher concentrations on chromosomes 1, 2, 3, and 5. These Hsps can be divided into six subfamilies (sHsp, Hsp40, Hsp60, Hsp70, Hsp90, and Hsp100) based on molecular weight and homology. Expression pattern data indicated that these Hsp genes can be categorized into three groups: generally high expression in almost all tissues, high tissue-specific expression, and low expression in all tissues. Further analysis of 15 representative genes found that the expression of 14 Hsp genes was upregulated by high temperatures. Subcellular localization analysis revealed seven proteins localized to the endoplasmic reticulum, while others localized to the mitochondria, chloroplasts, and nucleus. We successfully obtained the knockout mutants of above 15 Hsps by the CRISPR/Cas9 gene editing system. Under natural high-temperature conditions, the mutants of eight Hsps showed reduced yield mainly due to the seed setting rate or grain weight. Moreover, the rice quality of most of these mutants also changed, including increased grain chalkiness, decreased amylose content, and elevated total protein content, and the expressions of starch metabolism-related genes in the endosperm of these mutants were disturbed compared to the wild type under natural high-temperature conditions. In conclusion, our study provided new insights into the HSP gene family and found that it plays an important role in the formation of rice quality and yield.},
}

*Oryza/genetics/metabolism/growth & development
*Heat-Shock Proteins/genetics/metabolism
*Plant Proteins/genetics/metabolism
*Gene Expression Regulation, Plant
Multigene Family
Genome, Plant
Phylogeny
Chromosomes, Plant/genetics
Genome-Wide Association Study

@article {pmid39581968,
year = {2024},
author = {Wang, Y and Chen, F and Chen, Y and Ren, K and Zhao, D and Li, K and Li, H and Wan, X and Peng, M and Xiang, Z and Tang, Q and Hou, Z and Fang, Q and Zhou, Y and Lu, Y},
title = {Identification and analysis of drought-responsive F-box genes in upland rice and involvement of OsFBX148 in ABA response and ROS accumulation.},
journal = {BMC plant biology},
volume = {24},
number = {1},
pages = {1120},
pmid = {39581968},
issn = {1471-2229},
support = {32360075//the National Natural Science Foundation of China/ ; 2022CFB694//the Scientific Research Project of Department of Science and Technology of Hubei Province/ ; SCKJ-JYRC-2023-35//"Yazhou Bay" Elite Talent Science and Technology Program of Sanya Yazhou Bay Science and Technology City/ ; PY22005//the Incubation Project of Hubei Minzu University/ ; },
mesh = {*Oryza/genetics/metabolism/physiology ; *F-Box Proteins/genetics/metabolism ; *Droughts ; *Plant Proteins/genetics/metabolism ; *Abscisic Acid/metabolism/pharmacology ; *Reactive Oxygen Species/metabolism ; *Gene Expression Regulation, Plant ; Genes, Plant ; Stress, Physiological/genetics ; Plant Growth Regulators/metabolism ; Phylogeny ; },
abstract = {BACKGROUND: Upland rice varieties exhibit significant genetic diversity and broad environmental adaptability, making them ideal candidates for identifying consistently expressed stress-responsive genes. F-box proteins typically function as part of the SKP1-CUL1-F-box protein (SCF) ubiquitin ligase complexes to precisely regulate gene expression and protein level, playing essential roles in the modulation of abiotic stress responses. Therefore, utilizing upland rice varieties for screening stress-responsive F-box genes is a highly advantageous approach.

RESULTS: Through mRNA-seq analysis in the Brazilian upland rice (cv. IAPAR9), the research identified 29 drought-responsive F-box genes. Gene distribution and duplication analysis revealed these genes are distributed on 11 of the 12 chromosomes and 10 collinear gene pairs were identified on different chromosomes. 13 cis-elements or binding sites were identified in the promoters of the 29 drought-responsive F-box genes by analysis. Protein domain, stability and subcellular localization analysis results suggest that these F-box proteins possess F-box domain and several other domains, and they are mostly unstable proteins with subcellular localization in cytoplasm, nucleus, chloroplasts, mitochondria and endoplasmic reticulum. Most of drought-responsive F-box genes exhibited expression in various tissues such as root, stem, leaf, leaf sheath and panicle except for OsFBO10 and OsFBX283. These genes exhibited various responses to abiotic stresses such as osmotic, cold, heat, and salt stresses, along with ABA treatment. Importantly, a frame-shift mutation in OsFBX148 was created in the ZH11 variety, leading to altered ABA signal transduction and ROS accumulation. The study further elucidated the interaction of OsFBX148 with SKP1 family proteins OSK4/7/17 to form the SCF complex, dependent on the F-box domain.

CONCLUSIONS: The research identified and analyzed 29 drought-responsive F-box genes in upland rice and provides valuable insights into the role of OsFBX148 in ABA and ROS responses. It establishes a basis for future exploration of F-box genes in improving resistance to abiotic stresses, especially drought.},
}

*Oryza/genetics/metabolism/physiology
*F-Box Proteins/genetics/metabolism
*Droughts
*Plant Proteins/genetics/metabolism
*Abscisic Acid/metabolism/pharmacology
*Reactive Oxygen Species/metabolism
*Gene Expression Regulation, Plant
Genes, Plant
Stress, Physiological/genetics
Plant Growth Regulators/metabolism
Phylogeny

@article {pmid39572231,
year = {2024},
author = {Anikin, M and Henry, MF and Hodorova, V and Houbaviy, HB and Nosek, J and Pestov, DG and Markov, D},
title = {Mitochondrial mRNA and the Small Subunit rRNA in Budding Yeasts Undergo 3'-End Processing at Conserved Species-specific Elements.},
journal = {RNA (New York, N.Y.)},
volume = {},
number = {},
pages = {},
doi = {10.1261/rna.080254.124},
pmid = {39572231},
issn = {1469-9001},
abstract = {Respiration in eukaryotes depends on mitochondrial protein synthesis, which is performed by organelle-specific ribosomes translating organelle-encoded mRNAs. Although RNA maturation and stability are central events controlling mitochondrial gene expression, many of the molecular details in this pathway remain elusive. These include cis- and trans-regulatory factors that generate and protect the 3' ends. Here, we mapped the 3' ends of mitochondrial mRNAs of yeasts classified into multiple families of the subphylum Saccharomycotina. We found that the processing of mitochondrial 15S rRNA and mRNAs involves species-specific sequence elements, which we term 3'-end RNA processing elements (3'-RPEs). In Saccharomyces cerevisiae, the 3'-RPE has long been recognized as a conserved dodecamer sequence, which recent studies have shown to specifically interact with the nuclear genome-encoded pentatricopeptide repeat protein Rmd9. We also demonstrate that, analogous to Rmd9 in Saccharomyces cerevisiae, two Rmd9 orthologs from the Debaryomycetaceae family interact with their respective 3'-RPEs found in mRNAs and 15S rRNA. Thus, Rmd9-dependent processing of mitochondrial RNA precursors is a common mechanism among the families of the Saccharomycotina subphylum. This represents an example of mitochondrial-nuclear co-evolution. Surprisingly, we observed that 3'-RPEs often occur upstream of stop codons in complex I subunit mRNAs from yeasts of the CUG-Ser1 clade. We examined two of these mature mRNAs and found that their stop codons are indeed removed. Thus, translation of these transcripts would require a novel termination mechanism. Our findings establish Rmd9 as a key evolutionarily conserved factor in both mitochondrial mRNA metabolism and mitoribosome biogenesis in a variety of yeasts.},
}

@article {pmid39563898,
year = {2024},
author = {Jinesh, GG and Smallin, MT and Mtchedlidze, N and Napoli, M and Lockhart, JH and Flores, ER and Brohl, AS},
title = {C19MC drives nucleolar invasion of mitochondria and meiotic nuclear division in human cancers.},
journal = {iScience},
volume = {27},
number = {11},
pages = {111132},
pmid = {39563898},
issn = {2589-0042},
abstract = {The chromosome-19 miRNA cluster (C19MC) restricts viruses depending on the multinucleated state of placental trophoblasts. However, the relationship of C19MC to multinucleation is unknown. Here we show that C19MC is coexpressed in multiple cancer type subsets with meiosis-related genes. We discovered a novel meiosis-III that exhibits simultaneous progression of meiotic nuclear division (MND) and cytokinesis. C19MC promotes meiotic bridged-chromosomes to block MND and cytokinesis to generate multinucleated cells. MND starts with the invagination of nuclear membrane to form nucle(ol)ar invasive cytoplasm (NiC), mitochondria and protein cargoes. Aurora-B regulates the efflux of cargos from NiC, whereas C19MC, CDK1, and autophagy promote cargo influx to inflate NiC size for MND progression. Using CRISPR human genetic engineering we demonstrate that the C19MC expression is required for NiC-driven MND and multinucleation. This discovery has impacts on cancer-pathogen interactions, immunotherapy, vertical transmission of viruses, antiviral research and SpCas9-CRISPR therapeutics.},
}

@article {pmid39378918,
year = {2024},
author = {Wang, Z and Wang, R and Sang, Y and Wang, T and Su, Y and Liao, W},
title = {Comparative analysis of mitochondrial genomes of invasive weed Mikania micrantha and its indigenous congener Mikania cordata.},
journal = {International journal of biological macromolecules},
volume = {281},
number = {Pt 1},
pages = {136357},
doi = {10.1016/j.ijbiomac.2024.136357},
pmid = {39378918},
issn = {1879-0003},
mesh = {*Genome, Mitochondrial/genetics ; *Plant Weeds/classification/cytology/genetics ; *Mikania/classification/cytology/genetics ; *Introduced Species ; *Mitochondria/genetics ; Codon Usage ; RNA Editing ; Repetitive Sequences, Nucleic Acid ; Hydrophobic and Hydrophilic Interactions ; Amino Acids/chemistry/genetics/metabolism ; Synteny ; Phylogeny ; Chloroplasts/genetics ; },
abstract = {Mikania micrantha and Mikania cordata are two distinct species in China. The former is notorious as one of the top 100 worst invasive species, whereas the latter is an indigenous species harmless to native plants or the environment. They form an ideal congener pair for comparative studies aimed at deeply understanding the invasion mechanisms of the exotic weed. In this study, we have assembled and annotated the mitogenomes of both species using Illumina and PacBio sequencing data and compared their characteristic differences. The complete mitogenome of M. micrantha is a double-stranded DNA with a length of 336,564 bp, while the mitogenome of M. cordata exhibits a branching structure, consisting of two small circular molecules and six linear molecules, with a combined length totaling 335,444 bp. Compared to M. cordata, M. micrantha has less SSRs, tandem repeats, dispersed repeats, mitochondrial protein coding genes (PCGs). The two plants show similar codon usage patterns. This comparative study has revealed the structure and function of the mitogenomes of the two species and laid a solid foundation for investigating the effects of gene loss and duplication on the development of invasive traits in M. micrantha.},
}

*Genome, Mitochondrial/genetics
*Plant Weeds/classification/cytology/genetics
*Mikania/classification/cytology/genetics
*Introduced Species
*Mitochondria/genetics
Codon Usage
RNA Editing
Repetitive Sequences, Nucleic Acid
Hydrophobic and Hydrophilic Interactions
Amino Acids/chemistry/genetics/metabolism
Synteny
Phylogeny
Chloroplasts/genetics

@article {pmid39562266,
year = {2024},
author = {Povelones, ML and Ginger, ML},
title = {Bric-à-brac, an 'umbilical cord' and trypanosome kinetoplast segregation.},
journal = {Trends in parasitology},
volume = {},
number = {},
pages = {},
doi = {10.1016/j.pt.2024.10.021},
pmid = {39562266},
issn = {1471-5007},
abstract = {Cadena et al. recently discovered a conserved trypanosomatid 'nabelschnur' protein TbNAB70 from a search through the protein localization resource TrypTag, providing new insight into kinetoplast origin and evolution.},
}

@article {pmid39554026,
year = {2024},
author = {Kemph, A and Kharel, K and Tindell, SJ and Arkov, AL and Lynch, JA},
title = {Novel structure and composition of the unusually large germline determinant of the wasp Nasonia vitripennis.},
journal = {bioRxiv : the preprint server for biology},
volume = {},
number = {},
pages = {},
doi = {10.1101/2024.11.01.621563},
pmid = {39554026},
issn = {2692-8205},
abstract = {Specialized, maternally derived ribonucleoprotein (RNP) granules play an important role in specifying the primordial germ cells in many animal species. Typically, these germ granules are small (∼100 nm to a few microns in diameter) and numerous; in contrast, a single, extremely large granule called the oosome plays the role of germline determinant in the wasp Nasonia vitripennis. The organizational basis underlying the form and function of this unusually large membraneless RNP granule remains an open question. Here we use a combination of super-resolution and transmission electron microscopy to investigate the composition and morphology of the oosome. We show that the oosome has properties of a viscous liquid or elastic solid. The most prominent feature of the oosome is a branching mesh-like network of high abundance mRNAs that pervades the entire structure. Homologs of the core polar granule proteins Vasa and Oskar do not appear to nucleate this network, but rather are distributed adjacently as separate puncta. Low abundance RNAs appear to cluster in puncta that similarly do not overlap with the protein puncta. Several membrane-bound organelles, including lipid droplets and rough ER-like vesicles, are incorporated within the oosome, whereas mitochondria are nearly entirely excluded. Our findings show that the remarkably large size of the oosome is reflected in a complex sub-granular organization and suggest that the oosome is a powerful model for probing interactions between membraneless and membrane-bound organelles, structural features that contribute to granule size, and the evolution of germ plasm in insects.},
}

@article {pmid39437314,
year = {2024},
author = {Ozerova, I and Fallmann, J and Mörl, M and Bernt, M and Prohaska, SJ and Stadler, PF},
title = {Aberrant Mitochondrial tRNA Genes Appear Frequently in Animal Evolution.},
journal = {Genome biology and evolution},
volume = {16},
number = {11},
pages = {},
doi = {10.1093/gbe/evae232},
pmid = {39437314},
issn = {1759-6653},
support = {451363052//German Research Foundation/ ; },
mesh = {Animals ; *RNA, Transfer/genetics ; *Evolution, Molecular ; *Genome, Mitochondrial ; Phylogeny ; Genes, Mitochondrial ; Mitochondria/genetics ; RNA, Mitochondrial/genetics ; },
abstract = {Mitochondrial tRNAs have acquired a diverse portfolio of aberrant structures throughout metazoan evolution. With the availability of more than 12,500 mitogenome sequences, it is essential to compile a comprehensive overview of the pattern changes with regard to mitochondrial tRNA repertoire and structural variations. This, of course, requires reanalysis of the sequence data of more than 250,000 mitochondrial tRNAs with a uniform workflow. Here, we report our results on the complete reannotation of all mitogenomes available in the RefSeq database by September 2022 using mitos2. Based on the individual cases of mitochondrial tRNA variants reported throughout the literature, our data pinpoint the respective hotspots of change, i.e. Acanthocephala (Lophotrochozoa), Nematoda, Acariformes, and Araneae (Arthropoda). Less dramatic deviations of mitochondrial tRNAs from the norm are observed throughout many other clades. Loss of arms in animal mitochondrial tRNA clearly is a phenomenon that occurred independently many times, not limited to a small number of specific clades. The summary data here provide a starting point for systematic investigations into the detailed evolutionary processes of structural reduction and loss of mitochondrial tRNAs as well as a resource for further improvements of annotation workflows for mitochondrial tRNA annotation.},
}

Animals
*RNA, Transfer/genetics
*Evolution, Molecular
*Genome, Mitochondrial
Phylogeny
Genes, Mitochondrial
Mitochondria/genetics
RNA, Mitochondrial/genetics

@article {pmid39543792,
year = {2024},
author = {Jacobs, HT and Rustin, P and Bénit, P and Davidi, D and Terzioglu, M},
title = {Mitochondria: great balls of fire.},
journal = {The FEBS journal},
volume = {},
number = {},
pages = {},
doi = {10.1111/febs.17316},
pmid = {39543792},
issn = {1742-4658},
support = {ALTF 1146-2018//European Molecular Biology Organization/ ; 324730//Research Council of Finland/ ; n/a//Edmond de Rothschild Foundation/ ; LT000232/2019-L//Human Frontier Science Program/ ; },
abstract = {Recent experimental studies indicate that mitochondria in mammalian cells are maintained at temperatures of at least 50 °C. While acknowledging the limitations of current experimental methods and their interpretation, we here consider the ramifications of this finding for cellular functions and for evolution. We consider whether mitochondria as heat-producing organelles had a role in the origin of eukaryotes and in the emergence of homeotherms. The homeostatic responses of mitochondrial temperature to externally applied heat imply the existence of a molecular heat-sensing system in mitochondria. While current findings indicate high temperatures for the innermost compartments of mitochondria, those of the mitochondrial surface and of the immediately surrounding cytosol remain to be determined. We ask whether some aspects of mitochondrial dynamics and motility could reflect changes in the supply and demand for mitochondrial heat, and whether mitochondrial heat production could be a factor in diseases and immunity.},
}

@article {pmid38496441,
year = {2024},
author = {Dondi, A and Borgsmüller, N and Ferreira, PF and Haas, BJ and Jacob, F and Heinzelmann-Schwarz, V and , and Beerenwinkel, N},
title = {De novo detection of somatic variants in high-quality long-read single-cell RNA sequencing data.},
journal = {bioRxiv : the preprint server for biology},
volume = {},
number = {},
pages = {},
doi = {10.1101/2024.03.06.583775},
pmid = {38496441},
issn = {2692-8205},
support = {U24 CA180922/CA/NCI NIH HHS/United States ; },
abstract = {In cancer, genetic and transcriptomic variations generate clonal heterogeneity, leading to treatment resistance. Long-read single-cell RNA sequencing (LR scRNA-seq) has the potential to detect genetic and transcriptomic variations simultaneously. Here, we present LongSom, a computational workflow leveraging high-quality LR scRNA-seq data to call de novo somatic single-nucleotide variants (SNVs), including in mitochondria (mtSNVs), copy-number alterations (CNAs), and gene fusions, to reconstruct the tumor clonal heterogeneity. Before somatic variants calling, LongSom re-annotates marker gene based cell types using cell mutational profiles. LongSom distinguishes somatic SNVs from noise and germline polymorphisms by applying an extensive set of hard filters and statistical tests. Applying LongSom to human ovarian cancer samples, we detected clinically relevant somatic SNVs that were validated against matched DNA samples. Leveraging somatic SNVs and fusions, LongSom found subclones with different predicted treatment outcomes. In summary, LongSom enables de novo variant detection without the need for normal samples, facilitating the study of cancer evolution, clonal heterogeneity, and treatment resistance.},
}

@article {pmid39540883,
year = {2024},
author = {Garcia, LE and Sanchez-Puerta, MV},
title = {Mitochondrial Splicing Efficiency Is Lower in Holoparasites Than in Free-Living Plants.},
journal = {Plant & cell physiology},
volume = {},
number = {},
pages = {},
doi = {10.1093/pcp/pcae120},
pmid = {39540883},
issn = {1471-9053},
abstract = {Mitochondria play a crucial role in eukaryotic organisms, housing their own genome with genes vital for oxidative phosphorylation. Coordination between nuclear and mitochondrial genomes is pivotal for organelle gene expression. Splicing, editing and processing of mitochondrial transcripts are regulated by nuclear-encoded factors. Splicing efficiency (SEf) of the many group II introns present in plant mitochondrial genes is critical for mitochondrial function since a splicing defect or splicing deficiency can severely impact plant growth and development. This study investigates SEf in free-living and holoparasitic plants, focusing on 25 group II introns from 15 angiosperm species. Our comparative analyses reveal distinctive splicing patterns with holoparasites exhibiting significantly lower SEf, potentially linked to their unique evolutionary trajectory. Given the preponderance of horizontal gene transfer (HGT) in parasitic plants, we investigated the effect of HGT on SEf, such as the presence of foreign introns or foreign nuclear-encoded splicing factors. Contrary to expectations, the SEf reductions do not correlate with HGT events, suggesting that other factors are at play, such as the loss of photosynthesis or the transition to a holoparasitic lifestyle. The findings of this study broaden our understanding of the molecular evolution in parasitic plants and shed light on the multifaceted factors influencing organelle gene expression.},
}

@article {pmid39535230,
year = {2024},
author = {van Westerhoven, AC and Dijkstra, J and Aznar Palop, JL and Wissink, K and Bell, J and Kema, GHJ and Seidl, MF},
title = {Frequent genetic exchanges revealed by a pan-mitogenome graph of a fungal plant pathogen.},
journal = {mBio},
volume = {},
number = {},
pages = {e0275824},
doi = {10.1128/mbio.02758-24},
pmid = {39535230},
issn = {2150-7511},
abstract = {Mitochondria are present in almost all eukaryotic lineages. The mitochondrial genomes (mitogenomes) evolve separately from nuclear genomes, and they can therefore provide relevant insights into the evolution of their host species. Fusarium oxysporum is a major fungal plant pathogen that is assumed to reproduce clonally. However, horizontal chromosome transfer between strains can occur through heterokaryon formation, and recently, signs of sexual recombination have been observed. Similarly, signs of recombination in F. oxysporum mitogenomes challenged the prevailing assumption of clonal reproduction in this species. Here, we construct, to our knowledge, the first fungal pan-mitogenome graph of nearly 500 F. oxysporum mitogenome assemblies to uncover the variation and evolution. In general, the gene order of fungal mitogenomes is not well conserved, yet the mitogenome of F. oxysporum and related species are highly colinear. We observed two strikingly contrasting regions in the F. oxysporum pan-mitogenome, comprising a highly conserved core mitogenome and a long variable region (6-16 kb in size), of which we identified three distinct types. The pan-mitogenome graph reveals that only five intron insertions occurred in the core mitogenome and that the long variable regions drive the difference between mitogenomes. Moreover, we observed that their evolution is neither concurrent with the core mitogenome nor with the nuclear genome. Our large-scale analysis of long variable regions uncovers frequent recombination between mitogenomes, even between strains that belong to different taxonomic clades. This challenges the common assumption of incompatibility between genetically diverse F. oxysporum strains and provides new insights into the evolution of this fungal species.IMPORTANCEInsights into plant pathogen evolution is essential for the understanding and management of disease. Fusarium oxysporum is a major fungal pathogen that can infect many economically important crops. Pathogenicity can be transferred between strains by the horizontal transfer of pathogenicity chromosomes. The fungus has been thought to evolve clonally, yet recent evidence suggests active sexual recombination between related isolates, which could at least partially explain the horizontal transfer of pathogenicity chromosomes. By constructing a pan-genome graph of nearly 500 mitochondrial genomes, we describe the genetic variation of mitochondria in unprecedented detail and demonstrate frequent mitochondrial recombination. Importantly, recombination can occur between genetically diverse isolates from distinct taxonomic clades and thus can shed light on genetic exchange between fungal strains.},
}

@article {pmid39516195,
year = {2024},
author = {Speth, DR and Zeller, LM and Graf, JS and Overholt, WA and Küsel, K and Milucka, J},
title = {Genetic potential for aerobic respiration and denitrification in globally distributed respiratory endosymbionts.},
journal = {Nature communications},
volume = {15},
number = {1},
pages = {9682},
pmid = {39516195},
issn = {2041-1723},
mesh = {*Symbiosis ; *Phylogeny ; *Denitrification ; Metagenome ; Aerobiosis ; Ciliophora/genetics/metabolism ; Groundwater/microbiology ; Gammaproteobacteria/genetics/metabolism ; Germany ; Electron Transport Complex IV/genetics/metabolism ; California ; Genome, Bacterial ; },
abstract = {The endosymbiont Candidatus Azoamicus ciliaticola was proposed to generate ATP for its eukaryotic host, an anaerobic ciliate of the Plagiopylea class, fulfilling a function analogous to mitochondria in other eukaryotic cells. The discovery of this respiratory endosymbiosis has major implications for both evolutionary history and ecology of microbial eukaryotes. However, with only a single species described, knowledge of its environmental distribution and diversity is limited. Here we report four complete, circular metagenome assembled genomes (cMAGs) representing respiratory endosymbionts inhabiting groundwater in California, Ohio, and Germany. These cMAGs form two lineages comprising a monophyletic clade within the uncharacterized gammaproteobacterial order UBA6186, enabling evolutionary analysis of their key protein complexes. Strikingly, all four cMAGs encode a cytochrome cbb3 oxidase, which indicates that these endosymbionts have the capacity for aerobic respiration. Accordingly, we detect these respiratory endosymbionts in diverse habitats worldwide, thus further expanding the ecological scope of this respiratory symbiosis.},
}

*Symbiosis
*Phylogeny
*Denitrification
Metagenome
Aerobiosis
Ciliophora/genetics/metabolism
Groundwater/microbiology
Gammaproteobacteria/genetics/metabolism
Germany
Electron Transport Complex IV/genetics/metabolism
California
Genome, Bacterial

@article {pmid39511474,
year = {2024},
author = {Zhang, K and Qu, G and Zhang, Y and Liu, J},
title = {Assembly and comparative analysis of the first complete mitochondrial genome of Astragalus membranaceus (Fisch.) Bunge: an invaluable traditional Chinese medicine.},
journal = {BMC plant biology},
volume = {24},
number = {1},
pages = {1055},
pmid = {39511474},
issn = {1471-2229},
support = {2022CXY22//Scientific Research Project of Shanxi Datong University, China/ ; 2023-BSBA-286//Provincial Natural Science Foundation of Liaoning, China/ ; },
mesh = {*Astragalus propinquus/genetics ; *Genome, Mitochondrial ; *Phylogeny ; Medicine, Chinese Traditional ; Genome, Plant ; },
abstract = {BACKGROUND: Astragalus membranaceus (Fisch.) Bunge is one of the most well-known tonic herbs in traditional Chinese medicine, renowned for its remarkable medicinal value in various clinical contexts. The corresponding chloroplast (cp) and nuclear genomes have since been accordingly sequenced, providing valuable information for breeding and phylogeny studies. However, the mitochondrial genome (mitogenome) of A. membranaceus remains unexplored, which hinders comprehensively understanding the evolution of its genome.

RESULTS: For this study, we de novo assembled the mitogenome of A. membranaceus (Fisch.) Bunge var. mongholicus (Bunge) P. K. Hsiao using a strategy integrating Illumina and Nanopore sequencing technology and subsequently performed comparative analysis with its close relatives. The mitogenome has a multi-chromosome structure, consisting of two circular chromosomes with a total length of 398,048 bp and an overall GC content of 45.3%. It encodes 54 annotated functional genes, comprising 33 protein-coding genes (PCGs), 18 tRNA genes, and 3 rRNA genes. An investigation of codon usage in the PCGs revealed an obvious preference for codons ending in A or U (T) bases, given their high frequency. RNA editing identified 500 sites in the coding regions of mt PCGs that exhibit a perfect conversion of the base C to U, a process that tends to lead to the conversion of hydrophilic amino acids into hydrophobic amino acids. From the mitogenome analysis, a total of 399 SSRs, 4 tandem repeats, and 77 dispersed repeats were found, indicating that A. membranaceus possesses fewer repeats compared to its close relatives with similarly sized mitogenomes. Selection pressure analysis indicated that most mt PCGs were purifying selection genes, while only five PCGs (ccmB, ccmFc, ccmFn, nad3, and nad9) were positive selection genes. Notably, positive selection emerged as a critical factor in the evolution of ccmB and nad9 in all the pairwise species comparisons, suggesting the extremely critical role of these genes in the evolution of A. membranaceus. Moreover, we inferred that 22 homologous fragments have been transferred from cp to mitochondria (mt), in which 5 cp-derived tRNA genes remain intact in the mitogenome. Further comparative analysis revealed that the syntenic region and mt gene organization are relatively conserved within the provided legumes. The comparison of gene content indicated that the gene composition of Fabaceae mitogenomes differed. Finally, the phylogenetic tree established from analysis is largely congruent with the taxonomic relationships of Fabaceae species and highlights the close relationship between Astragalus and Oxytropis.

CONCLUSIONS: We provide the first report of the assembled and annotated A. membranaceus mitogenome, which enriches the genetic resources available for the Astragalus genus and lays the foundation for comprehensive exploration of this invaluable medicinal plant.},
}

*Astragalus propinquus/genetics
*Genome, Mitochondrial
*Phylogeny
Medicine, Chinese Traditional
Genome, Plant

@article {pmid39532882,
year = {2024},
author = {Erinjeri, AP and Wang, X and Williams, R and Chiozzi, RZ and Thalassinos, K and Labbadia, J},
title = {HSF-1 promotes longevity through ubiquilin-1-dependent mitochondrial network remodelling.},
journal = {Nature communications},
volume = {15},
number = {1},
pages = {9797},
pmid = {39532882},
issn = {2041-1723},
support = {BB/T013273/1//RCUK | Biotechnology and Biological Sciences Research Council (BBSRC)/ ; 209250/Z/17/Z//Wellcome Trust (Wellcome)/ ; 221521/Z/20/Z//Wellcome Trust (Wellcome)/ ; },
mesh = {*Mitochondria/metabolism ; Animals ; *Longevity/genetics ; *Caenorhabditis elegans Proteins/metabolism/genetics ; *Caenorhabditis elegans/metabolism/genetics ; *Transcription Factors/metabolism/genetics ; RNA Interference ; Endoplasmic Reticulum/metabolism ; },
abstract = {Increased activity of the heat shock factor, HSF-1, suppresses proteotoxicity and enhances longevity. However, the precise mechanisms by which HSF-1 promotes lifespan are unclear. Using an RNAi screen, we identify ubiquilin-1 (ubql-1) as an essential mediator of lifespan extension in worms overexpressing hsf-1. We find that hsf-1 overexpression leads to transcriptional downregulation of all components of the CDC-48-UFD-1-NPL-4 complex, which is central to both endoplasmic reticulum and mitochondria associated protein degradation, and that this is complemented by UBQL-1-dependent turnover of NPL-4.1. As a consequence, mitochondrial network dynamics are altered, leading to increased lifespan. Together, our data establish that HSF-1 mediates lifespan extension through mitochondrial network adaptations that occur in response to down-tuning of components associated with organellar protein degradation pathways.},
}

*Mitochondria/metabolism
Animals
*Longevity/genetics
*Caenorhabditis elegans Proteins/metabolism/genetics
*Caenorhabditis elegans/metabolism/genetics
*Transcription Factors/metabolism/genetics
RNA Interference
Endoplasmic Reticulum/metabolism

@article {pmid39527645,
year = {2024},
author = {Salminen, TS and Vesala, L and Basikhina, Y and Kutzer, M and Tuomela, T and Lucas, R and Monteith, K and Prakash, A and Tietz, T and Vale, PF},
title = {A naturally occurring mitochondrial genome variant confers broad protection from infection in Drosophila.},
journal = {PLoS genetics},
volume = {20},
number = {11},
pages = {e1011476},
doi = {10.1371/journal.pgen.1011476},
pmid = {39527645},
issn = {1553-7404},
abstract = {The role of mitochondria in immunity is increasingly recognized, but it is unclear how variation in mitochondrial DNA (mtDNA) contributes to variable infection outcomes. To quantify the effect of mtDNA variation on humoral and cell-mediated innate immune responses, we utilized a panel of fruit fly Drosophila melanogaster cytoplasmic hybrids (cybrids), where unique mtDNAs (mitotypes) were introgressed into a controlled isogenic nuclear background. We observed substantial heterogeneity in infection outcomes within the cybrid panel upon bacterial, viral and parasitoid infections, driven by the mitotype. One of the mitotypes, mtKSA2 protected against bacterial, parasitoid, and to a lesser extent, viral infections. Enhanced survival was not a result of improved bacterial clearance, suggesting mtKSA2 confers increased disease tolerance. Transcriptome sequencing showed that the mtKSA2 mitotype had an upregulation of genes related to mitochondrial respiration and phagocytosis in uninfected flies. Upon infection, mtKSA2 flies exhibited infection type and duration specific transcriptomic changes. Furthermore, uninfected mtKSA2 larvae showed immune activation of hemocytes (immune cells), increased hemocyte numbers and ROS production, and enhanced encapsulation response against parasitoid wasp eggs and larvae. Our results show that mtDNA variation acts as an immunomodulatory factor in both humoral and cell-mediated innate immunity and that specific mitotypes can provide broad protection against infections.},
}

@article {pmid39527633,
year = {2024},
author = {Gould, SB and Magiera, J and García García, C and Raval, PK},
title = {Reliability of plastid and mitochondrial localisation prediction declines rapidly with the evolutionary distance to the training set increasing.},
journal = {PLoS computational biology},
volume = {20},
number = {11},
pages = {e1012575},
doi = {10.1371/journal.pcbi.1012575},
pmid = {39527633},
issn = {1553-7358},
abstract = {Mitochondria and plastids import thousands of proteins. Their experimental localisation remains a frequent task, but can be resource-intensive and sometimes impossible. Hence, hundreds of studies make use of algorithms that predict a localisation based on a protein's sequence. Their reliability across evolutionary diverse species is unknown. Here, we evaluate the performance of common algorithms (TargetP, Localizer and WoLFPSORT) for four photosynthetic eukaryotes (Arabidopsis thaliana, Zea mays, Physcomitrium patens, and Chlamydomonas reinhardtii) for which experimental plastid and mitochondrial proteome data is available, and 171 eukaryotes using orthology inferences. The match between predictions and experimental data ranges from 75% to as low as 2%. Results worsen as the evolutionary distance between training and query species increases, especially for plant mitochondria for which performance borders on random sampling. Specificity, sensitivity and precision analyses highlight cross-organelle errors and uncover the evolutionary divergence of organelles as the main driver of current performance issues. The results encourage to train the next generation of neural networks on an evolutionary more diverse set of organelle proteins for optimizing performance and reliability.},
}

@article {pmid39518988,
year = {2024},
author = {Liu, R and Ma, T and Li, Y and Lei, X and Ji, H and Du, H and Zhang, J and Cao, SK},
title = {Genomic Identification and Expression Analysis of Regulator of Chromosome Condensation 1-Domain Protein Family in Maize.},
journal = {International journal of molecular sciences},
volume = {25},
number = {21},
pages = {},
doi = {10.3390/ijms252111437},
pmid = {39518988},
issn = {1422-0067},
support = {2022CFB183, 2024AFB301, 2022CFA030//Hubei Natural Science Foundation/ ; },
mesh = {*Zea mays/genetics/metabolism ; *Gene Expression Regulation, Plant ; *Plant Proteins/genetics/metabolism ; *Stress, Physiological/genetics ; Phylogeny ; Multigene Family ; Chromosomes, Plant/genetics ; Promoter Regions, Genetic ; Gene Expression Profiling ; Genomics/methods ; },
abstract = {Abiotic stress affects the growth and development of maize (Zea mays). The regulator of chromosome condensation 1 (RCC1)-containing proteins (RCPs) plays crucial roles in plant growth and development and response to abiotic stresses. However, a comprehensive analysis of the maize RCP family has not been reported in detail. This study presents a systematic bioinformatics analysis of the ZmRCP family, identifying a total of 30 members distributed across nine chromosomes. The physicochemical properties and cis-acting elements in the promoters of ZmRCP members are predicted. The results of subcellular localization showed that ZmRCP3 and ZmRCP10 are targeted to mitochondria and ZmRCP2 is localized in the nucleus. A heatmap of expression levels among family members under abiotic stress conditions revealed varying degrees of induced expression, and the expression levels of 10 ZmRCP members were quantified using RT-qPCR under abiotic stress and plant hormone treatments. The results showed that ZmRCP members exhibit induced or inhibited responses to these abiotic stresses and plant hormones. These results contribute to a better understanding of the evolutionary history and potential role of the ZmRCP family in mediating responses to abiotic stress in maize.},
}

*Zea mays/genetics/metabolism
*Gene Expression Regulation, Plant
*Plant Proteins/genetics/metabolism
*Stress, Physiological/genetics
Phylogeny
Multigene Family
Chromosomes, Plant/genetics
Promoter Regions, Genetic
Gene Expression Profiling
Genomics/methods

@article {pmid39503889,
year = {2024},
author = {Berrissou, C and Cognat, V and Koechler, S and Bergdoll, M and Duchêne, AM and Drouard, L},
title = {Extensive import of nucleus-encoded tRNAs into chloroplasts of the photosynthetic lycophyte, Selaginella kraussiana.},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
volume = {121},
number = {46},
pages = {e2412221121},
doi = {10.1073/pnas.2412221121},
pmid = {39503889},
issn = {1091-6490},
support = {ANR-10-IDEX-0002//Agence Nationale de la Recherche (ANR)/ ; ANR-17-EURE-0023//Agence Nationale de la Recherche (ANR)/ ; },
mesh = {*RNA, Transfer/genetics/metabolism ; *Chloroplasts/metabolism/genetics ; *Selaginellaceae/genetics/metabolism ; *Photosynthesis/genetics ; *Cell Nucleus/metabolism/genetics ; RNA, Plant/genetics/metabolism ; },
abstract = {Over the course of evolution, land plant mitochondrial genomes have lost many transfer RNA (tRNA) genes and the import of nucleus-encoded tRNAs is essential for mitochondrial protein synthesis. By contrast, plastidial genomes of photosynthetic land plants generally possess a complete set of tRNA genes and the existence of plastidial tRNA import remains a long-standing question. The early vascular plants of the Selaginella genus show an extensive loss of plastidial tRNA genes while retaining photosynthetic capacity, and represent an ideal model for answering this question. Using purification, northern blot hybridization, and high-throughput tRNA sequencing, a global analysis of total and plastidial tRNA populations was undertaken in Selaginella kraussiana. We confirmed the expression of all plastidial tRNA genes and, conversely, observed that nucleus-encoded tRNAs corresponding to these plastidial tRNAs were generally excluded from the chloroplasts. We then demonstrated a selective and differential plastidial import of around forty nucleus-encoded tRNA species, likely compensating for the insufficient coding capacity of plastidial-encoded tRNAs. In-depth analysis revealed differential import of tRNA isodecoders, leading to the identification of specific situations. This includes the expression and import of nucleus-encoded tRNAs expressed from plastidial or bacterial-like genes inserted into the nuclear genome. Overall, our results confirm the existence of molecular processes that enable tRNAs to be selectively imported not only into mitochondria, as previously described, but also into chloroplasts, when necessary.},
}

*RNA, Transfer/genetics/metabolism
*Chloroplasts/metabolism/genetics
*Selaginellaceae/genetics/metabolism
*Photosynthesis/genetics
*Cell Nucleus/metabolism/genetics
RNA, Plant/genetics/metabolism

@article {pmid39484454,
year = {2024},
author = {Keeney, JG and Astling, D and Andries, V and Vandepoele, K and Anderson, N and Davis, JM and Lopert, P and Vandenbussche, J and Gevaert, K and Staes, A and Paukovich, N and Vögeli, B and Jones, KL and van Roy, F and Patel, M and Sikela, JM},
title = {Olduvai domain expression downregulates mitochondrial pathways: implications for human brain evolution and neoteny.},
journal = {bioRxiv : the preprint server for biology},
volume = {},
number = {},
pages = {},
doi = {10.1101/2024.10.21.619278},
pmid = {39484454},
issn = {2692-8205},
abstract = {Encoded by the NBPF gene family, Olduvai (formerly DUF1220) protein domains have undergone the largest human lineage-specific copy number expansion of any coding region in the genome. Olduvai copy number shows a linear relationship with several brain size-related measures and cortical neuron number among primates and with normal and disease-associated (micro- and macrocephaly) variation in brain size in human populations. While Olduvai domains have been shown to promote proliferation of neural stem cells, the mechanism underlying such effects has remained unclear. Here, we investigate the function of Olduvai by transcriptome and proteome analyses of cells overexpressing NBPF1 , a gene encoding 7 Olduvai domains. Our results from both RNAseq and mass spectrometry approaches suggest a potential downregulation of mitochondria. In our proteomics study, a Gene Ontology (GO) enrichment analysis for the downregulated proteins revealed a striking overrepresentation of the biological process related to the mitochondrial electron transport chain (p value: 1.81e-11) and identified deregulation of the NADH dehydrogenase activity (p value: 2.43e-11) as the primary molecular function. We verify the reduction of apparent mitochondria via live-cell imaging experiments. Given these and previous Olduvai findings, we suggest that the Olduvai-mediated, dosage-dependent reduction in available energy via mitochondrial downregulation may have resulted in a developmental slowdown such that the neurogenic window among primates, and most extremely in humans, was expanded over a greater time interval, allowing for production of greater numbers of neurons and a larger brain. We further suggest that such a slowdown may extend to other developmental processes that also exhibit neotenic features.},
}

@article {pmid39488375,
year = {2024},
author = {Leka, KP and Wideman, JG},
title = {An introduction to comparative genomics, EukProt, and the reciprocal best hit (RBH) method for bench biologists: Ancestral phosphorylation of Tom22 in eukaryotes as a case study.},
journal = {Methods in enzymology},
volume = {707},
number = {},
pages = {209-234},
doi = {10.1016/bs.mie.2024.07.036},
pmid = {39488375},
issn = {1557-7988},
mesh = {*Genomics/methods ; Phosphorylation ; Eukaryota/genetics/metabolism ; Humans ; Animals ; Evolution, Molecular ; Databases, Protein ; Amino Acid Sequence ; },
abstract = {Comparative genomics is a useful approach for hypothesis generation for future functional investigations at the bench. However, most bench biologists shy away from computational methods. Here we reintroduce the simple but extremely effective Reciprocal Best Hit method for inferring protein orthologues. Because taxon set delimitation is perhaps the most important step in comparative genomics, we introduce The Comparative Set, a taxonomically representative subset of EukProt, a comprehensive eukaryotic predicted proteome database. After introducing the basic methods, we provide a step-by-step guide, including screen shots, for a case study on collecting Tom22 sequences from diverse eukaryotes. As an example of possible downstream analyses, we show that Tom22 proteins from diverse eukaryotes are likely regulated by conserved kinases at several sites. Though the sites evolve quickly, the processes and functions involved are likely ancestral and conserved across many eukaryotes.},
}

*Genomics/methods
Phosphorylation
Eukaryota/genetics/metabolism
Humans
Animals
Evolution, Molecular
Databases, Protein
Amino Acid Sequence

@article {pmid39474867,
year = {2024},
author = {Barcytė, D and Jaške, K and Pánek, T and Yurchenko, T and Ševčíková, T and Eliášová, A and Eliáš, M},
title = {A cryptic plastid and a novel mitochondrial plasmid in Leucomyxa plasmidifera gen. and sp. nov. (Ochrophyta) push the frontiers of organellar biology.},
journal = {Open biology},
volume = {14},
number = {10},
pages = {240022},
pmid = {39474867},
issn = {2046-2441},
support = {//European Regional Development Fund/ ; //Grantová Agentura České Republiky/ ; //Univerzita Karlova v Praze/ ; },
mesh = {*Plasmids/genetics ; *Phylogeny ; *Genome, Plastid ; *Plastids/genetics/metabolism ; Mitochondria/genetics/metabolism ; Genome, Mitochondrial ; Evolution, Molecular ; },
abstract = {Complete plastid loss seems to be very rare among secondarily non-photosynthetic eukaryotes. Leukarachnion sp. PRA-24, an amoeboid colourless protist related to the photosynthetic algal class Synchromophyceae (Ochrophyta), is a candidate for such a case based on a previous investigation by transmission electron microscopy. Here, we characterize this organism in further detail and describe it as Leucomyxa plasmidifera gen. et sp. nov., additionally demonstrating it is the first known representative of a broader clade of non-photosynthetic ochrophytes. We recovered its complete plastid genome, exhibiting a reduced gene set similar to plastomes of other non-photosynthetic ochrophytes, yet being even more extreme in sequence divergence. Identification of components of the plastid protein import machinery in the L. plasmidifera transcriptome assembly corroborated that the organism possesses a cryptic plastid organelle. According to our bioinformatic reconstruction, the plastid contains a unique combination of biosynthetic pathways producing haem, a folate precursor and tocotrienols. As another twist to its organellar biology, L. plasmidifera turned out to contain an unusual long insertion in its mitogenome related to a newly discovered mitochondrial plasmid exhibiting unprecedented features in terms of its size and coding capacity. Combined, our work uncovered further striking outcomes of the evolutionary course of semiautonomous organelles in protists.},
}

*Plasmids/genetics
*Phylogeny
*Genome, Plastid
*Plastids/genetics/metabolism
Mitochondria/genetics/metabolism
Genome, Mitochondrial
Evolution, Molecular

@article {pmid39468759,
year = {2024},
author = {Deconinck, A and Madalone, O and Willett, C},
title = {Absence of heterosis for hypoxia tolerance in F1 hybrids of Tigriopus californicus.},
journal = {The Journal of heredity},
volume = {},
number = {},
pages = {},
doi = {10.1093/jhered/esae061},
pmid = {39468759},
issn = {1465-7333},
abstract = {Hybridization produces a range of outcomes from advantageous to disadvantageous, and a goal of genetic research is to understand the gene interactions that generate these outcomes. Interactions between cytoplasmic elements, such as mitochondria, and the nucleus may be particularly vulnerable to accruing disadvantageous combinations as a result of their different rates of evolution. However, mitonuclear incompatibilities often do not have an observable effect until the F2 and later generations. We used Tigriopus californicus, a model system for mitonuclear incompatibilities that is also known for exhibiting heterosis in the F1 generation, to test whether hypoxia was more stressful for mitonuclear interactions than other environmental stressors. We generated 284 parental and 436 F1 hybrids from four population crosses (720 total) and compared parental and F1 populations for hypoxia tolerance. We observed that, on average, F1 hybrids were less likely to survive a hypoxia stress test than parental populations (Parental:F1 coefficients ranged from -0.04 to 0.14 with none significantly different from 0). This suggests that hypoxia may be a particularly intense stressor for mitonuclear coordination, and that hybridization outcomes vary by trait.},
}

@article {pmid39467848,
year = {2024},
author = {Büttiker, P and Boukherissa, A and Weissenberger, S and Ptacek, R and Anders, M and Raboch, J and Stefano, GB},
title = {Cognitive Impact of Neurotropic Pathogens: Investigating Molecular Mimicry through Computational Methods.},
journal = {Cellular and molecular neurobiology},
volume = {44},
number = {1},
pages = {72},
pmid = {39467848},
issn = {1573-6830},
mesh = {Humans ; *Molecular Mimicry ; Computational Biology/methods ; Cognition/physiology ; Protein Binding ; Amino Acid Sequence ; Viral Proteins/metabolism/chemistry ; Models, Molecular ; },
abstract = {Neurotropic pathogens, notably, herpesviruses, have been associated with significant neuropsychiatric effects. As a group, these pathogens can exploit molecular mimicry mechanisms to manipulate the host central nervous system to their advantage. Here, we present a systematic computational approach that may ultimately be used to unravel protein-protein interactions and molecular mimicry processes that have not yet been solved experimentally. Toward this end, we validate this approach by replicating a set of pre-existing experimental findings that document the structural and functional similarities shared by the human cytomegalovirus-encoded UL144 glycoprotein and human tumor necrosis factor receptor superfamily member 14 (TNFRSF14). We began with a thorough exploration of the Homo sapiens protein database using the Basic Local Alignment Search Tool (BLASTx) to identify proteins sharing sequence homology with UL144. Subsequently, we used AlphaFold2 to predict the independent three-dimensional structures of UL144 and TNFRSF14. This was followed by a comprehensive structural comparison facilitated by Distance-Matrix Alignment and Foldseek. Finally, we used AlphaFold-multimer and PPIscreenML to elucidate potential protein complexes and confirm the predicted binding activities of both UL144 and TNFRSF14. We then used our in silico approach to replicate the experimental finding that revealed TNFRSF14 binding to both B- and T-lymphocyte attenuator (BTLA) and glycoprotein domain and UL144 binding to BTLA alone. This computational framework offers promise in identifying structural similarities and interactions between pathogen-encoded proteins and their host counterparts. This information will provide valuable insights into the cognitive mechanisms underlying the neuropsychiatric effects of viral infections.},
}

Humans
*Molecular Mimicry
Computational Biology/methods
Cognition/physiology
Protein Binding
Amino Acid Sequence
Viral Proteins/metabolism/chemistry
Models, Molecular

@article {pmid39465975,
year = {2024},
author = {Cheng, YK and Zhang, Y and Zhang, ZY and Cong, PK and Feng, JY and Zhang, R and Long, SR and Zhang, X and Wang, ZQ and Cui, J},
title = {Biological characteristics and functions of a novel glutamate dehydrogenase from Trichinella spiralis.},
journal = {Parasite (Paris, France)},
volume = {31},
number = {},
pages = {65},
pmid = {39465975},
issn = {1776-1042},
support = {82172300//National Natural Science Foundation of China/ ; },
mesh = {Animals ; *Glutamate Dehydrogenase/metabolism/genetics ; *Trichinella spiralis/enzymology/genetics/growth & development ; Female ; Cloning, Molecular ; Larva/enzymology/growth & development/genetics ; Amino Acid Sequence ; RNA Interference ; Phylogeny ; Male ; Helminth Proteins/genetics/metabolism ; Sequence Alignment ; },
abstract = {Glutamate dehydrogenase (GDH) plays an important role in the metabolism of organisms. Its high abundance in mitochondria in particular highlights its core role in cellular physiological processes. GDH catalyzes the mutual conversion between L-glutamic acid and α-ketoglutaric acids. At the same time, this transformation is accompanied by the oxidation-reduction of NAD(H) or NADP(H). This process not only helps to link amino acid metabolism with sugar metabolism, but also helps maintain the balance of intracellular pH and nitrogen homeostasis. In this study, a novel Trichinella spiralis glutamate dehydrogenase (TsGDH) was cloned, expressed and identified. The results revealed that TsGDH was expressed at various stages of development of the nematode T. spiralis, with higher expression levels in the adult worm stage, and was mainly localized in the cuticle, muscular layer, stichosome and female intrauterine embryos. After RNAi treatment, larval natural TsGDH enzyme activity was obviously reduced, and metabolism, molting, growth and reproduction were also significantly inhibited. The results indicate that TsGDH plays an important role in the development and survival of T. spiralis, and it may be a potential molecular target of anti-Trichinella vaccines and drugs.},
}

Animals
*Glutamate Dehydrogenase/metabolism/genetics
*Trichinella spiralis/enzymology/genetics/growth & development
Female
Cloning, Molecular
Larva/enzymology/growth & development/genetics
Amino Acid Sequence
RNA Interference
Phylogeny
Male
Helminth Proteins/genetics/metabolism
Sequence Alignment

@article {pmid39457076,
year = {2024},
author = {Zhu, K and Zhang, Y and Shen, W and Yu, L and Li, D and Zhang, H and Miao, C and Ding, X and Jiang, Y},
title = {Genome-Wide Analysis and Expression Profiling of Glyoxalase Gene Families Under Abiotic Stresses in Cucumber (Cucumis sativus L.).},
journal = {International journal of molecular sciences},
volume = {25},
number = {20},
pages = {},
pmid = {39457076},
issn = {1422-0067},
support = {22ZR1460500//The Natural Science Foundation of Shanghai/ ; [2022]022//The Excellent Team Program of the Shanghai Academy of Agricultural Sciences/ ; },
mesh = {*Cucumis sativus/genetics/enzymology ; *Stress, Physiological/genetics ; *Gene Expression Regulation, Plant ; *Phylogeny ; *Lactoylglutathione Lyase/genetics/metabolism ; *Multigene Family ; Thiolester Hydrolases/genetics/metabolism ; Plant Proteins/genetics/metabolism ; Gene Expression Profiling ; Genome-Wide Association Study ; Genome, Plant ; },
abstract = {The glyoxalase pathway, consisting of glyoxalase I (GLYI) and glyoxalase II (GLYII), is an enzymatic system that converts cytotoxic methylglyoxal to non-toxic S-D-lactoylglutathione. Although the GLY gene family has been analyzed in Arabidopsis, rice, grape, cabbage, and soybean, cucumber studies are lacking. Here, we analyzed the cucumber GLY gene family, identifying 13 CsGLYI and 2 CsGLYII genes. Furthermore, we investigated the physicochemical properties, phylogenetic relationships, chromosomal localization and colinearity, gene structure, conserved motifs, cis-regulatory elements, and protein-protein interaction networks of the CsGLY family. They were primarily localized in the cytoplasm, chloroplasts, and mitochondria, with a minor presence in the nucleus. The classification of CsGLYI and CsGLYII genes into five classes closely resembled the homologous genes in Arabidopsis and soybean. Additionally, hormone-responsive elements dominated the promoter region of GLY genes, alongside light- and stress-responsive elements. The predicted interaction proteins of CsGLYIs and CsGLYIIs exerted a significant role in cellular respiration, amino acid synthesis, and metabolism, as well as methylglyoxal catabolism. In addition, the expression profiles of GLY genes were distinct in different tissues of cucumber as well as under diverse abiotic stresses. This study is conducive to the further exploration of the functional diversity among glyoxalase genes and the mechanisms of stress responses in cucumber.},
}

*Cucumis sativus/genetics/enzymology
*Stress, Physiological/genetics
*Gene Expression Regulation, Plant
*Phylogeny
*Lactoylglutathione Lyase/genetics/metabolism
*Multigene Family
Thiolester Hydrolases/genetics/metabolism
Plant Proteins/genetics/metabolism
Gene Expression Profiling
Genome-Wide Association Study
Genome, Plant

@article {pmid39456791,
year = {2024},
author = {Li, J and Ma, M and Zeng, T and Gu, L and Zhu, B and Wang, H and Du, X and Zhu, X},
title = {Genome-Wide Identification of the Peanut ASR Gene Family and Its Expression Analysis under Abiotic Stress.},
journal = {International journal of molecular sciences},
volume = {25},
number = {20},
pages = {},
pmid = {39456791},
issn = {1422-0067},
support = {QSXM2022-B10//Xuye Du/ ; QSXM2022-B30//Xuye Du/ ; QSXM2022-15//Xuye Du/ ; },
mesh = {*Arachis/genetics/metabolism ; *Stress, Physiological/genetics ; *Gene Expression Regulation, Plant ; *Plant Proteins/genetics/metabolism ; *Multigene Family ; Phylogeny ; Abscisic Acid/metabolism/pharmacology ; Droughts ; Genome, Plant ; Gene Expression Profiling ; },
abstract = {Peanut (Arachis hypogaea L.) is one of the most important oil and food legume crops worldwide. ASR (abscisic acid, stress, ripening) plays extremely important roles in plant growth and development, fruit ripening, pollen development, and stress. Here, six ASR genes were identified in peanut. Structural and conserved motif analyses were performed to identify common ABA/WDS structural domains. The vast majority of ASR genes encoded acidic proteins, all of which are hydrophilic proteins and localized on mitochondria and nucleus, respectively. The cis-element analysis revealed that some cis-regulatory elements were related to peanut growth and development, hormone, and stress response. Under normal growth conditions, AhASR4 and AhASR5 were expressed in all tissues of peanut plants. Quantitative real-time PCR (qRT-PCR) results indicated that peanut ASR genes exhibited complex expression patterns in response to abiotic stress. Notably, under drought and cadmium (Cd) stress, the expression levels of AhASR4 and AhASR5 were significantly upregulated, suggesting that these genes may play a crucial role in the peanut plant's resistance to such stressors. These results provide a theoretical basis for studying the evolution, expression, and function of the peanut ASR gene family and will provide valuable information in the identification and screening of genes for peanut stress tolerance breeding.},
}

*Arachis/genetics/metabolism
*Stress, Physiological/genetics
*Gene Expression Regulation, Plant
*Plant Proteins/genetics/metabolism
*Multigene Family
Phylogeny
Abscisic Acid/metabolism/pharmacology
Droughts
Genome, Plant
Gene Expression Profiling

@article {pmid39456251,
year = {2024},
author = {Indo, HP and Chatatikun, M and Nakanishi, I and Matsumoto, KI and Imai, M and Kawakami, F and Kubo, M and Abe, H and Ichikawa, H and Yonei, Y and Beppu, HJ and Minamiyama, Y and Kanekura, T and Ichikawa, T and Phongphithakchai, A and Udomwech, L and Sukati, S and Charong, N and Somsak, V and Tangpong, J and Nomura, S and Majima, HJ},
title = {The Roles of Mitochondria in Human Being's Life and Aging.},
journal = {Biomolecules},
volume = {14},
number = {10},
pages = {},
pmid = {39456251},
issn = {2218-273X},
support = {Grant-in-Aid for Research Project, No. 2022-1013//Kitasato University School of Allied Health Sciences/ ; JPMXP1323015488//MEXT Promotion of Development of a Joint Usage/Research System Project: Coalition of Universities for Research Excellence Program (CURE)/ ; },
mesh = {Humans ; *Mitochondria/metabolism ; *Aging/metabolism ; Archaea/metabolism ; Bacteria/metabolism ; },
abstract = {The universe began 13.8 billion years ago, and Earth was born 4.6 billion years ago. Early traces of life were found as soon as 4.1 billion years ago; then, ~200,000 years ago, the human being was born. The evolution of life on earth was to become individual rather than cellular life. The birth of mitochondria made this possible to be the individual life. Since then, individuals have had a limited time of life. It was 1.4 billion years ago that a bacterial cell began living inside an archaeal host cell, a form of endosymbiosis that is the development of eukaryotic cells, which contain a nucleus and other membrane-bound compartments. The bacterium started to provide its host cell with additional energy, and the interaction eventually resulted in a eukaryotic cell, with both archaeal (the host cell) and bacterial (mitochondrial) origins still having genomes. The cells survived high concentrations of oxygen producing more energy inside the cell. Further, the roles of mitochondria in human being's life and aging will be discussed.},
}

Humans
*Mitochondria/metabolism
*Aging/metabolism
Archaea/metabolism
Bacteria/metabolism

@article {pmid39454737,
year = {2024},
author = {Liu, X and Liu, N and Jing, X and Khan, H and Yang, K and Zheng, Y and Nie, Y and Song, H and Huang, Y},
title = {Genomic and transcriptomic perspectives on the origin and evolution of NUMTs in Orthoptera.},
journal = {Molecular phylogenetics and evolution},
volume = {201},
number = {},
pages = {108221},
doi = {10.1016/j.ympev.2024.108221},
pmid = {39454737},
issn = {1095-9513},
abstract = {Nuclear mitochondrial pseudogenes (NUMTs) result from the transfer of mitochondrial DNA (mtDNA) to the nuclear genome. NUMTs, as "frozen" snapshots of mitochondria, can provide insights into diversification patterns. In this study, we analyzed the origins and insertion frequency of NUMTs using genome assembly data from ten species in Orthoptera. We found divergences between NUMTs and contemporary mtDNA in Orthoptera ranging from 0 % to 23.78 %. The results showed that the number of NUMT insertions was significantly positively correlated with the content of transposable elements in the genome. We found that 39.09 %-68.65 % of the NUMTs flanking regions (2,000 bp) contained retrotransposons, and more NUMTs originated from mitochondrial rDNA regions. Based on the analysis of the mitochondrial transcriptome, we found a potential mechanism of NUMT integration: mitochondrial transcripts are reverse transcribed into double-stranded DNA and then integrated into the genome. The probability of this mechanism occurring accounts for 0.30 %-1.02 % of total mitochondrial nuclear transfer events. Finally, based on the phylogenetic tree constructed using NUMTs and contemporary mtDNA, we provide insights into ancient evolutionary events such as species-specific "autaponumts" and "synaponumts" shared among different species, as well as post-integration duplication events.},
}

@article {pmid39417916,
year = {2024},
author = {Stefano, GB and Weissenberger, S and Ptacek, R and Anders, M and Raboch, J and Büttiker, P},
title = {Viruses and Mitochondrial Dysfunction in Neurodegeneration and Cognition: An Evolutionary Perspective.},
journal = {Cellular and molecular neurobiology},
volume = {44},
number = {1},
pages = {68},
pmid = {39417916},
issn = {1573-6830},
mesh = {Humans ; *Mitochondria/metabolism ; Animals ; *Neurodegenerative Diseases/metabolism/pathology/physiopathology ; *Biological Evolution ; Viruses ; Cognition/physiology ; },
abstract = {Mitochondria, the cellular powerhouses with bacterial evolutionary origins, play a pivotal role in maintaining neuronal function and cognitive health. Several viruses have developed sophisticated mechanisms to target and disrupt mitochondrial function which contribute to cognitive decline and neurodegeneration. The interplay between viruses and mitochondria might be traced to their co-evolutionary history with bacteria and may reflect ancient interactions that have shaped modern mitochondrial biology.},
}

Humans
*Mitochondria/metabolism
Animals
*Neurodegenerative Diseases/metabolism/pathology/physiopathology
*Biological Evolution
Viruses
Cognition/physiology

@article {pmid39409762,
year = {2024},
author = {Bakhoum, AJS and Marigo, AM and Poonlaphdecha, S and Ribas, A and Morand, S and Miquel, J},
title = {Ultrastructural Characteristics of the Mature Spermatozoon of Artyfechinostomum malayanum (Digenea: Echinostomatidae), an Intestinal Parasite of Rattus norvegicus (Rodentia: Muridae) in Vietnam.},
journal = {Animals : an open access journal from MDPI},
volume = {14},
number = {19},
pages = {},
pmid = {39409762},
issn = {2076-2615},
abstract = {The study of sperm characteristics has proven useful for elucidating interrelationships in several groups of Platyhelminthes, such as digeneans. Thus, in the present work, the ultrastructural organization of the mature spermatozoon of the digenean Artyfechinostomum malayanum (Echinostomatidae), a parasite of Rattus norvegicus (Rodentia: Muridae) from Dong Thap Province, Vietnam, was investigated for the first time using transmission electron microscopy. The male gamete of A. malayanum exhibits two axonemes of different lengths, showing the 9 + '1' pattern of the Trepaxonemata, a nucleus, two mitochondria, two lateral expansions, two bundles of parallel cortical microtubules, external ornamentation, spine-like bodies, and granules of glycogen. Thus, the mature spermatozoon follows a Type V sperm model proposed for digeneans. We also highlight some noteworthy characteristics in Echinostomatidae with possible phylogenetic implications, such as two lateral expansions in the anterior region of the spermatozoon and two mitochondria.},
}

@article {pmid39408807,
year = {2024},
author = {Wang, Y and Shi, Y and Li, H and Wang, S and Wang, A},
title = {Whole Genome Identification and Biochemical Characteristics of the Tilletia horrida Cytochrome P450 Gene Family.},
journal = {International journal of molecular sciences},
volume = {25},
number = {19},
pages = {},
pmid = {39408807},
issn = {1422-0067},
support = {32001490//National Natural Science Foundation of China/ ; },
mesh = {*Cytochrome P-450 Enzyme System/genetics/metabolism ; Oryza/microbiology/genetics ; Multigene Family ; Phylogeny ; Fungal Proteins/genetics/metabolism ; Genome, Fungal ; Gene Expression Regulation, Fungal ; Basidiomycota/genetics/enzymology ; Plant Diseases/microbiology/genetics ; Promoter Regions, Genetic ; },
abstract = {Rice kernel smut caused by the biotrophic basidiomycete fungus Tilletia horrida causes significant yield losses in hybrid rice-growing areas around the world. Cytochrome P450 (CYP) enzyme is a membrane-bound heme-containing monooxygenase. In fungi, CYPs play a role in cellular metabolism, adaptation, pathogenicity, decomposition, and biotransformation of hazardous chemicals. In this study, we identified 20 CYP genes based on complete sequence analysis and functional annotation from the T. horrida JY-521 genome. The subcellular localization, conserved motifs, and structures of these 20 CYP genes were further predicted. The ThCYP genes exhibit differences in gene structures and protein motifs. Subcellular localization showed that they were located in the plasma membrane, cytoplasm, nucleus, mitochondria, and extracellular space, indicating that they had multiple functions. Some cis-regulatory elements related to stress response and plant hormones were found in the promoter regions of these genes. Protein-protein interaction (PPI) analysis showed that several ThCYP proteins interact with multiple proteins involved in the ergosterol pathway. Moreover, the expression of 20 CYP genes had different responses to different infection time points and underwent dynamic changes during T. horrida JY-521 infection, indicating that these genes were involved in the interaction with rice and their potential role in the pathogenic mechanism. These results provided valuable resources for elucidating the structure of T. horrida CYP family proteins and laid an important foundation for further research of their roles in the pathogenesis.},
}

*Cytochrome P-450 Enzyme System/genetics/metabolism
Oryza/microbiology/genetics
Multigene Family
Phylogeny
Fungal Proteins/genetics/metabolism
Genome, Fungal
Gene Expression Regulation, Fungal
Basidiomycota/genetics/enzymology
Plant Diseases/microbiology/genetics
Promoter Regions, Genetic

@article {pmid39404344,
year = {2024},
author = {Storer, ISR and Sastré-Velásquez, LE and Easter, T and Mertens, B and Dallemulle, A and Bottery, M and Tank, R and Offterdinger, M and Bromley, MJ and van Rhijn, N and Gsaller, F},
title = {Shining a light on the impact of antifungals on Aspergillus fumigatus subcellular dynamics through fluorescence imaging.},
journal = {Antimicrobial agents and chemotherapy},
volume = {},
number = {},
pages = {e0080324},
doi = {10.1128/aac.00803-24},
pmid = {39404344},
issn = {1098-6596},
abstract = {Fluorescent proteins (FPs) are indispensable tools used for molecular imaging, single-cell dynamics, imaging in infection models, and more. However, next-generation FPs have yet to be characterized in Aspergillus. Here, we characterize 18 FPs in the pathogenic filamentous fungus Aspergillus fumigatus spanning the visible light spectrum. We report on in vivo FP brightness in hyphal and spore morphotypes and show how a fluoropyrimidine-based selection system can be used to iteratively introduce four distinct FPs enabling the simultaneous visualization of the cell membrane, mitochondria, peroxisomes, and vacuoles. Using this strain, we describe and compare the dynamic responses of organelles to stresses induced by voriconazole, amphotericin B, and the novel antifungal drugs olorofim and manogepix. The expansion to the fluorescent genetic toolbox will overcome boundaries in research applications that involve fluorescence imaging in filamentous fungi.},
}

@article {pmid39395416,
year = {2024},
author = {Greenway, R and De-Kayne, R and Brown, AP and Camarillo, H and Delich, C and McGowan, KL and Nelson, J and Arias-Rodriguez, L and Kelley, JL and Tobler, M},
title = {Integrative analyses of convergent adaptation in sympatric extremophile fishes.},
journal = {Current biology : CB},
volume = {},
number = {},
pages = {},
doi = {10.1016/j.cub.2024.09.027},
pmid = {39395416},
issn = {1879-0445},
abstract = {The evolution of independent lineages along replicated environmental transitions frequently results in convergent adaptation, yet the degree to which convergence is present across multiple levels of biological organization is often unclear. Additionally, inherent biases associated with shared ancestry and variation in selective regimes across geographic replicates often pose challenges for confidently identifying patterns of convergence. We investigated a system in which three species of poeciliid fishes sympatrically occur in a toxic spring rich in hydrogen sulfide (H2S) and an adjacent nonsulfidic stream to examine patterns of adaptive evolution across levels of biological organization. We found convergence in morphological and physiological traits and genome-wide patterns of gene expression among all three species. In addition, there were shared signatures of selection on genes encoding H2S toxicity targets in the mitochondrial genomes of each species. However, analyses of nuclear genomes revealed neither evidence for substantial genomic islands of divergence around genes involved in H2S toxicity and detoxification nor substantial congruence of strongly differentiated regions across population pairs. These non-convergent, heterogeneous patterns of genomic divergence may indicate that sulfide tolerance is highly polygenic, with shared allele frequency shifts present at many loci with small effects along the genome. Alternatively, H2S tolerance may involve substantial genetic redundancy, with non-convergent, lineage-specific variation at multiple loci along the genome underpinning similar changes in phenotypes and gene expression. Overall, we demonstrate variability in the extent of convergence across organizational levels and highlight the challenges of linking patterns of convergence across scales.},
}

@article {pmid39392668,
year = {2024},
author = {Princepe, D and de Aguiar, MAM},
title = {Nuclear compensatory evolution driven by mito-nuclear incompatibilities.},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
volume = {121},
number = {42},
pages = {e2411672121},
pmid = {39392668},
issn = {1091-6490},
support = {2018/11187-8//Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)/ ; 2021/14335-0//ICTP South American Institute for Fundamental Research (ICTP-SAIFR)/ ; 301082/2019-7//Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)/ ; },
mesh = {*Cell Nucleus/genetics/metabolism ; *DNA, Mitochondrial/genetics ; Mutation ; Models, Genetic ; Evolution, Molecular ; Mitochondria/genetics/metabolism ; Animals ; Selection, Genetic ; Biological Evolution ; Mutation Rate ; },
abstract = {Mitochondrial function relies on the coordinated expression of mitochondrial and nuclear genes, exhibiting remarkable resilience despite high mitochondrial mutation rates. The nuclear compensation mechanism suggests deleterious mitochondrial alleles drive compensatory nuclear mutations to preserve mito-nuclear compatibility. However, prevalence and factors conditioning this phenomenon remain debated due to its conflicting evidence. Here, we investigate how mito-nuclear incompatibilities impact substitutions in a model for species radiation. Mating success depends on genetic compatibility (nuclear DNA) and spatial proximity. Populations evolve from partially compatible mito-nuclear states, simulating mitochondrial DNA (mtDNA) introgression. Mutations do not confer advantages nor disadvantages, but individual fecundity declines with increasing incompatibilities, selecting for mito-nuclear coordination. We find that selection for mito-nuclear compatibility affects each genome differently based on their initial state. In compatible gene pairs, selection reduces substitutions in both genomes, while in incompatible nuclear genes, it consistently promotes compensation, facilitated by more mismatches. Interestingly, high mitochondrial mutation rates can reduce nuclear compensation by increasing mtDNA rectification, while substitutions in initially compatible nuclear gene are boosted. Finally, the presence of incompatibilities accelerates species radiation, but equilibrium richness is not directly correlated to substitution rates, revealing the complex dynamics triggered by mitochondrial introgression and mito-nuclear coevolution. Our study provides a perspective on nuclear compensation and the role of mito-nuclear incompatibilities in speciation by exploring extreme scenarios and identifying trends that empirical data alone cannot reveal. We emphasize the challenges in detecting these dynamics and propose analyzing specific genomic signatures could shed light on this evolutionary process.},
}

*Cell Nucleus/genetics/metabolism
*DNA, Mitochondrial/genetics
Mutation
Models, Genetic
Evolution, Molecular
Mitochondria/genetics/metabolism
Animals
Selection, Genetic
Biological Evolution
Mutation Rate

@article {pmid39390511,
year = {2024},
author = {Li, Y and Thomas, GWC and Richards, S and Waterhouse, RM and Zhou, X and Pfrender, ME},
title = {Rapid evolution of mitochondrion-related genes in haplodiploid arthropods.},
journal = {BMC biology},
volume = {22},
number = {1},
pages = {229},
pmid = {39390511},
issn = {1741-7007},
mesh = {Animals ; *Evolution, Molecular ; *Arthropods/genetics ; *Genes, Mitochondrial/genetics ; Phylogeny ; Haploidy ; Diploidy ; Oxidative Phosphorylation ; Cell Nucleus/genetics ; },
abstract = {BACKGROUND: Mitochondrial genes and nuclear genes cooperate closely to maintain the functions of mitochondria, especially in the oxidative phosphorylation (OXPHOS) pathway. However, mitochondrial genes among arthropod lineages have dramatic evolutionary rate differences. Haplodiploid arthropods often show fast-evolving mitochondrial genes. One hypothesis predicts that the small effective population size of haplodiploid species could enhance the effect of genetic drift leading to higher substitution rates in mitochondrial and nuclear genes. Alternatively, positive selection or compensatory changes in nuclear OXPHOS genes could lead to the fast-evolving mitochondrial genes. However, due to the limited number of arthropod genomes, the rates of evolution for nuclear genes in haplodiploid species, besides hymenopterans, are largely unknown. To test these hypotheses, we used data from 76 arthropod genomes, including 5 independently evolved haplodiploid lineages, to estimate the evolutionary rates and patterns of gene family turnover of mitochondrial and nuclear genes.

RESULTS: We show that five haplodiploid lineages tested here have fast-evolving mitochondrial genes and fast-evolving nuclear genes related to mitochondrial functions, while nuclear genes not related to mitochondrion showed no significant evolutionary rate differences. Among hymenopterans, bees and ants show faster rates of molecular evolution in mitochondrial genes and mitochondrion-related nuclear genes than sawflies and wasps. With genome data, we also find gene family expansions and contractions in mitochondrion-related genes of bees and ants.

CONCLUSIONS: Our results reject the small population size hypothesis in haplodiploid species. A combination of positive selection and compensatory changes could lead to the observed patterns in haplodiploid species. The elevated evolutionary rates in OXPHOS complex 2 genes of bees and ants suggest a unique evolutionary history of social hymenopterans.},
}

Animals
*Evolution, Molecular
*Arthropods/genetics
*Genes, Mitochondrial/genetics
Phylogeny
Haploidy
Diploidy
Oxidative Phosphorylation
Cell Nucleus/genetics

@article {pmid39386732,
year = {2024},
author = {Korotkevich, E and Conrad, DN and Gartner, ZJ and O'Farrell, PH},
title = {Selection promotes age-dependent degeneration of the mitochondrial genome.},
journal = {bioRxiv : the preprint server for biology},
volume = {},
number = {},
pages = {},
pmid = {39386732},
issn = {2692-8205},
support = {P30 DK026743/DK/NIDDK NIH HHS/United States ; S10 OD028511/OD/NIH HHS/United States ; R33 CA247744/CA/NCI NIH HHS/United States ; P30 CA082103/CA/NCI NIH HHS/United States ; R35 GM136324/GM/NIGMS NIH HHS/United States ; },
abstract = {Somatic mutations in mitochondrial genomes (mtDNA) accumulate exponentially during aging. Using single cell sequencing, we characterize the spectrum of age-accumulated mtDNA mutations in mouse and human liver and identify directional forces that accelerate the accumulation of mutations beyond the rate predicted by a neutral model. "Driver" mutations that give genomes a replicative advantage rose to high cellular abundance and carried along "passenger" mutations, some of which are deleterious. In addition, alleles that alter mtDNA-encoded proteins selectively increased in abundance overtime, strongly supporting the idea of a "destructive" selection that favors genomes lacking function. Overall, this combination of selective forces acting in hepatocytes promotes somatic accumulation of mutations in coding regions of mtDNA that are otherwise conserved in evolution. We propose that these selective processes could contribute to the population prevalence of mtDNA mutations, accelerate the course of heteroplasmic mitochondrial diseases and promote age-associated erosion of the mitochondrial genome.},
}

@article {pmid39371131,
year = {2024},
author = {Smith, TB and Kopajtich, R and Demain, LAM and Rea, A and Thomas, HB and Schiff, M and Beetz, C and Joss, S and Conway, GS and Shukla, A and Yeole, M and Radhakrishnan, P and Azzouz, H and Ben Chehida, A and Elmaleh-Bergès, M and Glasgow, RIC and Thompson, K and Oláhová, M and He, L and Jenkinson, EM and Jahic, A and Belyantseva, IA and Barzik, M and Urquhart, JE and O' Sullivan, J and Williams, SG and Bhaskar, SS and Carrera, S and Blakes, AJM and Banka, S and Yue, WW and Ellingford, JM and Houlden, H and , and Munro, KJ and Friedman, TB and Taylor, RW and Prokisch, H and O'Keefe, RT and Newman, WG},
title = {Biallelic variants in DAP3 result in reduced assembly of the mitoribosomal small subunit with altered intrinsic and extrinsic apoptosis and a Perrault syndrome-spectrum phenotype.},
journal = {medRxiv : the preprint server for health sciences},
volume = {},
number = {},
pages = {},
pmid = {39371131},
support = {/WT_/Wellcome Trust/United Kingdom ; T32 DC000039/DC/NIDCD NIH HHS/United States ; Z01 DC000039/ImNIH/Intramural NIH HHS/United States ; },
abstract = {The mitoribosome synthesizes 13 protein subunits of the oxidative phosphorylation system encoded by the mitochondrial genome. The mitoribosome is composed of 12S rRNA, 16S rRNA and 82 mitoribosomal proteins encoded by nuclear genes. To date, variants in 12 genes encoding mitoribosomal proteins are associated with rare monogenic disorders, and frequently show combined oxidative phosphorylation deficiency. Here, we describe five unrelated individuals with biallelic variants in the DAP3 nuclear gene encoding mitoribosomal small subunit 29 (MRPS29), with variable clinical presentations ranging from Perrault syndrome (sensorineural hearing loss and ovarian insufficiency) to an early childhood neurometabolic phenotype. Assessment of respiratory chain function and proteomic profiling of fibroblasts from affected individuals demonstrated reduced MRPS29 protein levels, and consequently decreased levels of additional protein components of the mitoribosomal small subunit, associated with a combined complex I and IV deficiency. Lentiviral transduction of fibroblasts from affected individuals with wild-type DAP3 cDNA increased DAP3 mRNA expression, and partially rescued protein levels of MRPS7, MRPS9 and complex I and IV subunits, demonstrating the pathogenicity of the DAP3 variants. Protein modelling suggested that DAP3 disease-associated missense variants can impact ADP binding, and in vitro assays demonstrated DAP3 variants can consequently reduce both intrinsic and extrinsic apoptotic sensitivity, DAP3 thermal stability and DAP3 GTPase activity. Our study presents genetic and functional evidence that biallelic variants in DAP3 result in a multisystem disorder of combined oxidative phosphorylation deficiency with pleiotropic presentations, consistent with mitochondrial dysfunction.},
}

@article {pmid39370506,
year = {2024},
author = {Zhu, L and Diao, S and Li, T and Guo, J},
title = {Deciphering the multi- partite mitochondrial genome of Crataegus pinnatifida: insights into the evolution and genetics of cultivated Hawthorn.},
journal = {BMC plant biology},
volume = {24},
number = {1},
pages = {929},
pmid = {39370506},
issn = {1471-2229},
mesh = {*Crataegus/genetics ; *Genome, Mitochondrial ; Phylogeny ; Evolution, Molecular ; Genome, Plant ; RNA Editing ; },
abstract = {Flowering plant (angiosperm) mitochondrial genomes are remarkably dynamic in their structures. We present the complete mitochondrial genome of hawthorn (Crataegus pinnatifida Bunge), a shrub that bears fruit and is celebrated for its extensive medicinal history. We successfully assembled the hawthorn mitogenome utilizing the PacBio long-read sequencing technique, which yielded 799,862 reads, and the Illumina novaseq6000 sequencing platform, which producing 6.6 million raw paired reads. The C. pinnatifida mitochondria sequences encompassed a total length of 440,295 bp with a GC content of 45.42%. The genome annotates 54 genes, including 34 that encode proteins, 17 that encode tRNA, and three genes for rRNA. A fascinating interplay was observed between the chloroplast and mitochondrial genomes, which share 17 homologous sequences sequences that rotal 1,933 bp. A total of 134 SSRs, 22 tandem repeats and 42 dispersed repeats were identified in the mitogenome. Four conformations of C. pinnatifida mitochondria sequences recombination were verified through PCR experiments and Sanger sequencing, and C. pinnatifida mitogenome is more likely to be assembled into three circular-mapping chromosomes. All the RNA editing sites that were identified C-U edits, which predominantly occurred at the first and second positions of the codons. Phylogenetic and collinearity analyses identified the evolutionary trajectory of C. pinnatifida, which reinforced the genetic identity of the hawthorn section. This unveiling of the unique multi-partite structure of the hawthorn mitogenome offers a foundational reference for future study into the evolution and genetics of C. pinnatifida.},
}

*Crataegus/genetics
*Genome, Mitochondrial
Phylogeny
Evolution, Molecular
Genome, Plant
RNA Editing

@article {pmid39369076,
year = {2024},
author = {Tseng, WW and Chu, CH and Lee, YJ and Zhao, S and Chang, C and Ho, YP and Wei, AC},
title = {Metabolic regulation of mitochondrial morphologies in pancreatic beta cells: coupling of bioenergetics and mitochondrial dynamics.},
journal = {Communications biology},
volume = {7},
number = {1},
pages = {1267},
pmid = {39369076},
issn = {2399-3642},
support = {MOST-109-2636-B-002-001; MOST-110-2636-B-002-017//Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)/ ; NTU-112L900701//National Taiwan University (NTU)/ ; },
mesh = {*Insulin-Secreting Cells/metabolism ; *Mitochondrial Dynamics ; *Energy Metabolism ; *Mitochondria/metabolism ; Animals ; Models, Biological ; Mice ; Adenosine Triphosphate/metabolism ; Humans ; },
abstract = {Cellular bioenergetics and mitochondrial dynamics are crucial for the secretion of insulin by pancreatic beta cells in response to elevated levels of blood glucose. To elucidate the interactions between energy production and mitochondrial fission/fusion dynamics, we combine live-cell mitochondria imaging with biophysical-based modeling and graph-based network analysis. The aim is to determine the mechanism that regulates mitochondrial morphology and balances metabolic demands in pancreatic beta cells. A minimalistic differential equation-based model for beta cells is constructed that includes glycolysis, oxidative phosphorylation, calcium dynamics, and fission/fusion dynamics, with ATP synthase flux and proton leak flux as main regulators of mitochondrial dynamics. The model shows that mitochondrial fission occurs in response to hyperglycemia, starvation, ATP synthase inhibition, uncoupling, and diabetic conditions, in which the rate of proton leakage exceeds the rate of mitochondrial ATP synthesis. Under these metabolic challenges, the propensities of tip-to-tip fusion events simulated from the microscopy images of the mitochondrial networks are lower than those in the control group and prevent the formation of mitochondrial networks. The study provides a quantitative framework that couples bioenergetic regulation with mitochondrial dynamics, offering insights into how mitochondria adapt to metabolic challenges.},
}

*Insulin-Secreting Cells/metabolism
*Mitochondrial Dynamics
*Energy Metabolism
*Mitochondria/metabolism
Animals
Models, Biological
Mice
Adenosine Triphosphate/metabolism
Humans

@article {pmid39367089,
year = {2024},
author = {Piselli, C},
title = {How to isolate channel-forming membrane proteins using the E. coli expression system.},
journal = {Nature protocols},
volume = {},
number = {},
pages = {},
pmid = {39367089},
issn = {1750-2799},
abstract = {The recombinant expression, isolation and characterization of pore-forming proteins is one of the most commonly used strategies for understanding the permeability properties of the biological membrane into which they are embedded. This protocol describes how to quantify the expression of your protein of interest and use this information to optimize its production using the Escherichia coli strain BL21Gold(de3)ΔABCF. It explains with a step-by-step approach how to separate the bacterial compartments according to their solubility and how to extract your protein of interest in its native conformation using detergent solutions. Finally, it describes how to improve its purity via ion-exchange chromatography and insert the purified porins into outer membrane vesicles, from which they can be copurified. The protocol is simpler and less empirical than those described for most channel-forming membrane proteins and also provides a solid foundation for the isolation of soluble proteins. Several parameters can be optimized on a case-by-case basis: expression time and temperature, concentration of the inducer, nature and concentration of the detergent, incubation time and temperature, pH and ionic strength of the purification buffers. This protocol is effective with prokaryotic channel-forming membrane proteins and can be employed for the production of pore-forming proteins from chloroplasts, mitochondria or eukaryotes in general. With minor optimization, this protocol can be adapted for the isolation of receptors, carrier, pumps or any other membrane-active proteins.},
}

@article {pmid39358558,
year = {2024},
author = {Tronik-Le Roux, D and Daouya, M and Poras, I and Desgrandchamps, F and Carosella, ED},
title = {HLA-G neo-expression modifies genetic programs governing tumor cell lines.},
journal = {Cancer immunology, immunotherapy : CII},
volume = {73},
number = {12},
pages = {247},
pmid = {39358558},
issn = {1432-0851},
mesh = {Humans ; *HLA-G Antigens/genetics/metabolism/immunology ; Cell Line, Tumor ; Gene Expression Regulation, Neoplastic ; CRISPR-Cas Systems ; Neuropilin-1/genetics/metabolism ; Immunotherapy/methods ; },
abstract = {The development of immunotherapies has proved to be clinically encouraging to re-establish the immune function modified by the expression of immune inhibitory molecules in tumors. However, there are still patients with poor survival rates following treatment. The elucidation of molecular mechanisms triggered by the neo-expression of particular IC in tumors would constitute a major step toward better understanding tumor evolution and would help to design future clinical protocols. To this end, we investigate the modifications triggered by the neo-expression of the immune checkpoints HLA-G in ccRCC tumor cells. We demonstrate, for the first time, that HLA-G modifies key genes implicated mainly in tumor development, angiogenesis, calcium flow and mitochondria dynamics. The involvement of HLA-G on the expression of genes belonging to these pathways such as ADAM-12, NCAM1 and NRP1 was confirmed by the CRISPR/Cas9-mediated edition of HLA-G. The data reveal multifaceted roles of HLA-G in tumor cells which are far beyond the well-known function of HLA-G in the immune anti-tumor response. This warrants further investigation of HLA-G and these new partners in tumors of different origin so as to propose future new treatments to improve health patient's outcome.},
}

Humans
*HLA-G Antigens/genetics/metabolism/immunology
Cell Line, Tumor
Gene Expression Regulation, Neoplastic
CRISPR-Cas Systems
Neuropilin-1/genetics/metabolism
Immunotherapy/methods

@article {pmid39356435,
year = {2024},
author = {Zouaoui, S and Rouabhi, R},
title = {Lysosomal disruption, mitochondrial impairment, histopathological and oxidative stress in rat's nervous system after exposure to a neonicotinoid (imidacloprid).},
journal = {Environmental science and pollution research international},
volume = {31},
number = {49},
pages = {59472-59489},
pmid = {39356435},
issn = {1614-7499},
mesh = {Animals ; *Oxidative Stress/drug effects ; *Rats, Wistar ; Rats ; *Lysosomes/drug effects ; *Neonicotinoids/toxicity ; *Mitochondria/drug effects ; Nitro Compounds/toxicity ; Nervous System/drug effects ; Male ; Insecticides/toxicity ; },
abstract = {Imidacloprid (IMI), a neonicotinoid pesticide, has been widely used due to its high efficiency against insect pests. However, its prolonged exposure may pose significant risks to non-target organisms, including mammals. Recent studies have raised concerns about its potential neurotoxicity, yet the underlying mechanisms remain poorly understood. This study aimed to assess the neurotoxic effects of chronic Imidacloprid exposure in Wistar rats, focusing on oxidative stress, mitochondrial dysfunction, and lysosomal disruption. Wistar rats were orally administered two doses of Imidacloprid (5 mg/kg and 50 mg/kg body weight) for three months. Neurotoxic effects were assessed by measuring key biochemical markers such as the enzymatic activities of catalase (CAT), glutathione peroxidase (GPx), superoxide dismutase (SOD), and glutathione S-transferase (GST). Non-enzymatic markers, including glutathione (GSH) levels and malondialdehyde (MDA) index, were also evaluated. Mitochondrial function was assessed by analyzing oxygen consumption, swelling, and membrane permeability and histopathological changes. Lysosomal stability was examined using the Neutral Red Retention Time (NRRT) assay. Neutral red is a dye that accumulates in the acidic environment of lysosomes. Healthy lysosomes retain the dye, while compromised lysosomes lose it, indicating destabilization. By measuring the amount of neutral red retained in lysosomes, the NRRT assay assesses lysosomal integrity. Lysosomal pH variations were also monitored to evaluate functional changes. Microscopic analysis provided insight into structural changes in lysosomes and other cell components. Lysosomal destabilization was further confirmed by morphological alterations observed through light microscopy, revealing a progressive, time-dependent degeneration of lysosomal structures, including lysosomal expansion, neutral red dye leakage, and cell rounding. These changes reflected a temporal evolution of lysosomal damage, progressing from minor structural disruptions to more severe alterations as exposure continued, observable at the microscopic level. During the study, clinical observations of intoxicated rats included symptoms such as lethargy, reduced activity levels, and impaired motor coordination. High-dose Imidacloprid exposure led to noticeable behavioral changes, including decreased exploratory behavior and altered grooming patterns. Additionally, signs of neurotoxic effects, such as tremors or ataxia, were observed in the rats exposed to the higher dose, reflecting the systemic impact of chronic pesticide exposure. The results revealed a significant decrease in the enzymatic activities of CAT, GPx, and SOD, accompanied by an increase in GST activity. A notable reduction in glutathione levels and a rise in MDA index were observed, indicating enhanced oxidative stress in the brain. Mitochondrial impairment was evidenced by disturbances in oxygen consumption, increased swelling, and altered membrane permeability. Lysosomal destabilization was confirmed by reduced retention of neutral red dye, structural changes in lysosomes, and a significant rise in lysosomal pH in the IMI-exposed groups. In addition, the histopathological features indicate that imidacloprid at the given dose and exposure duration may have caused notable neurotoxic effects in Wistar rat brain tissue. Chronic exposure to Imidacloprid induces oxidative stress, mitochondrial dysfunction, lysosomal disruption and histopathological alterations in the central nervous system of Wistar rats. These findings provide valuable insights into the neurotoxic mechanisms of neonicotinoid pesticides, highlighting the need for further research to understand the long-term effects of Imidacloprid exposure on mammalian health.},
}

Animals
*Oxidative Stress/drug effects
*Rats, Wistar
Rats
*Lysosomes/drug effects
*Neonicotinoids/toxicity
*Mitochondria/drug effects
Nitro Compounds/toxicity
Nervous System/drug effects
Male
Insecticides/toxicity

@article {pmid39343888,
year = {2024},
author = {Ahmad, F and Abdullah, M and Khan, Z and Stępień, P and Rehman, SU and Akram, U and Rahman, MHU and Ali, Z and Ahmad, D and Gulzar, RMA and Ali, MA and Salama, EAA},
title = {Genome-wide analysis and prediction of chloroplast and mitochondrial RNA editing sites of AGC gene family in cotton (Gossypium hirsutum L.) for abiotic stress tolerance.},
journal = {BMC plant biology},
volume = {24},
number = {1},
pages = {888},
pmid = {39343888},
issn = {1471-2229},
support = {32130075//National Natural Science Foundation of China/ ; 32130075//National Natural Science Foundation of China/ ; 32130075//National Natural Science Foundation of China/ ; 2021AB008, 2020CB003//Science Technology and Achievement Transformation Project of the Xinjiang Production and Construction Corps/ ; 2021AB008, 2020CB003//Science Technology and Achievement Transformation Project of the Xinjiang Production and Construction Corps/ ; 2021AB008, 2020CB003//Science Technology and Achievement Transformation Project of the Xinjiang Production and Construction Corps/ ; ADP-LO21002838 Punjab, Pak//ADP Funded Project entitled National Crop Genomics and Speed Breeding Center for Agri-cultural Sustainability/ ; ADP-LO21002838 Punjab, Pak//ADP Funded Project entitled National Crop Genomics and Speed Breeding Center for Agri-cultural Sustainability/ ; ADP-LO21002838 Punjab, Pak//ADP Funded Project entitled National Crop Genomics and Speed Breeding Center for Agri-cultural Sustainability/ ; ADP-LO21002838 Punjab, Pak//ADP Funded Project entitled National Crop Genomics and Speed Breeding Center for Agri-cultural Sustainability/ ; ADP-LO21002838 Punjab, Pak//ADP Funded Project entitled National Crop Genomics and Speed Breeding Center for Agri-cultural Sustainability/ ; RSP2024R306//King Saud University, Riyadh, Saudi Arabia/ ; },
mesh = {*Gossypium/genetics/physiology ; *RNA Editing/genetics ; *Stress, Physiological/genetics ; *Phylogeny ; *Chloroplasts/genetics ; Genome, Plant ; Mitochondria/genetics ; Plant Proteins/genetics/metabolism ; Multigene Family ; Genome-Wide Association Study ; Gene Expression Regulation, Plant ; RNA, Mitochondrial/genetics ; Genes, Plant ; },
abstract = {BACKGROUND: Cotton is one of the topmost fiber crops throughout the globe. During the last decade, abrupt changes in the climate resulted in drought, heat, and salinity. These stresses have seriously affected cotton production and significant losses all over the textile industry. The GhAGC kinase, a subfamily of AGC group and member of serine/threonine (Ser/Thr) protein kinases group and is highly conserved among eukaryotic organisms. The AGC kinases are compulsory elements of cell development, metabolic processes, and cell death in mammalian systems. The investigation of RNA editing sites within the organelle genomes of multicellular vascular plants, such as Gossypium hirsutum holds significant importance in understanding the regulation of gene expression at the post-transcriptional level.

METHODS: In present work, we characterized twenty-eight GhAGC genes in cotton and constructed phylogenetic tree using nine different species from the most primitive to the most recent.

RESULTS: In sequence logos analyses, highly conserved amino acid residues were found in G. hirsutum, G. arboretum, G. raimondii and A. thaliana. The occurrence of cis-acting growth and stress-related elements in the promoter regions of GhAGCs highlight the significance of these factors in plant development and abiotic stress tolerance. Ka/Ks levels demonstrated that purifying selection pressure resulting from segmental events was applied to GhAGC with little functional divergence. We focused on identifying RNA editing sites in G. hirsutum organelles, specifically in the chloroplast and mitochondria, across all 28 AGC genes.

CONCLUSION: The positive role of GhAGCs was explored by quantifying the expression in the plant tissues under abiotic stress. These findings help in understanding the role of GhAGC genes under abiotic stresses which may further be used in cotton breeding for the development of climate smart varieties in abruptly changing climate.},
}

*Gossypium/genetics/physiology
*RNA Editing/genetics
*Stress, Physiological/genetics
*Phylogeny
*Chloroplasts/genetics
Genome, Plant
Mitochondria/genetics
Plant Proteins/genetics/metabolism
Multigene Family
Genome-Wide Association Study
Gene Expression Regulation, Plant
RNA, Mitochondrial/genetics
Genes, Plant

@article {pmid39342114,
year = {2024},
author = {Ye, H and Liu, H and Li, H and Lei, D and Gao, Z and Zhou, H and Zhao, P},
title = {Complete mitochondrial genome assembly of Juglans regia unveiled its molecular characteristics, genome evolution, and phylogenetic implications.},
journal = {BMC genomics},
volume = {25},
number = {1},
pages = {894},
pmid = {39342114},
issn = {1471-2164},
support = {Y23Z619F17//Qinling Hundred Talents Project of Shaanxi Academy of Science/ ; 32370386//National Natural Science Foundation of China/ ; 2023-JC-JQ-22//Science Foundation for Distinguished Young Scholars of Shaanxi Province/ ; 22JHZ005//Basic Research Project of Shaanxi Academy of Fundamental Science/ ; 2024NC-YBXM-064//Shaanxi Key Research and Development Program/ ; 2023K-49, 2023K-26, and 2019K-06//Science and Technology Program of Shaanxi Academy of Science/ ; SXLK2023-02-20//Shaanxi Forestry Science and Technology Innovation Key Project/ ; },
mesh = {*Juglans/genetics ; *Genome, Mitochondrial ; *Phylogeny ; *Evolution, Molecular ; RNA, Transfer/genetics ; Genome, Plant ; RNA Editing ; Codon Usage ; Base Composition ; },
abstract = {BACKGROUND: The Persian walnut (Juglans regia), an economically vital species within the Juglandaceae family, has seen its mitochondrial genome sequenced and assembled in the current study using advanced Illumina and Nanopore sequencing technology.

RESULTS: The 1,007,576 bp mitogenome of J. regia consisted of three circular chromosomes with a 44.52% GC content encoding 39 PCGs, 47 tRNA, and five rRNA genes. Extensive repetitive sequences, including 320 SSRs, 512 interspersed, and 83 tandem repeats, were identified, contributing to genomic complexity. The protein-coding sequences (PCGs) favored A/T-ending codons, and the codon usage bias was primarily shaped by selective pressure. Intracellular gene transfer occurred among the mitogenome, chloroplast, and nuclear genomes. Comparative genomic analysis unveiled abundant structure and sequence variation among J. regia and related species. The results of selective pressure analysis indicated that most PCGs underwent purifying selection, whereas the atp4 and ccmB genes had experienced positive selection between many species pairs. In addition, the phylogenetic examination, grounded in mitochondrial genome data, precisely delineated the evolutionary and taxonomic relationships of J. regia and its relatives. We identified a total of 539 RNA editing sites, among which 288 were corroborated by transcriptome sequencing data. Furthermore, expression profiling under temperature stress highlighted the complex regulation pattern of 28 differently expressed PCGs, wherein NADH dehydrogenase and ATP synthase genes might be critical in the mitochondria response to cold stress.

CONCLUSIONS: Our results provided valuable molecular resources for understanding the genetic characteristics of J. regia and offered novel perspectives for population genetics and evolutionary studies in Juglans and related woody species.},
}

*Juglans/genetics
*Genome, Mitochondrial
*Phylogeny
*Evolution, Molecular
RNA, Transfer/genetics
Genome, Plant
RNA Editing
Codon Usage
Base Composition

@article {pmid39341116,
year = {2024},
author = {Yazaki, E and Uehara, T and Sakamoto, H and Inagaki, Y},
title = {Dinotoms possess two evolutionary distinct autophagy-related ubiquitin-like conjugation systems.},
journal = {Protist},
volume = {175},
number = {6},
pages = {126067},
doi = {10.1016/j.protis.2024.126067},
pmid = {39341116},
issn = {1618-0941},
abstract = {Autophagy is an intracellular degradation mechanism by which cytoplasmic materials are delivered to and degraded in the lysosome-fused autophagosome (autolysosome) and proposed to have been established at an early stage of eukaryotic evolution. Dinoflagellates harboring endosymbiotic diatoms (so-called "dinotoms"), which retain their own nuclei and mitochondria in addition to plastids, have been investigated as an intermediate toward the full integration of a eukaryotic phototroph into the host-controlled organelle (i.e., plastid) through endosymbiosis. Pioneering studies systematically evaluated the degree of host governance on several metabolic pathways in the endosymbiotic diatoms (ESDs). However, little attention has been paid to the impact of the endosymbiotic lifestyle on the autophagy operated in the ESDs. In this study, we searched for ATG3, ATG4, ATG5, ATG7, ATG8, ATG10, and ATG12, which are required for autophagosome formation, in the RNA-seq data from dinotoms Durinskia baltica and Kryptoperidinium foliaceum. We detected two evolutionally distinct sets of the ATG proteins in the dinotom species, one affiliated with the dinoflagellate homologs and the other with the diatom homologs in phylogenetic analyses. The results suggest that the ATG proteins descended from the diatom taken up by the dinoflagellate host persist for autophagosome formation and, most likely, autophagy.},
}

@article {pmid39334842,
year = {2024},
author = {Gambino, G and Da Pozzo, E and Salvetti, A and Rossi, L},
title = {Planarian Mucus: A Novel Source of Pleiotropic Cytotoxic and Cytostatic Agents against Cancer Cells.},
journal = {Biomolecules},
volume = {14},
number = {9},
pages = {},
pmid = {39334842},
issn = {2218-273X},
mesh = {Animals ; *Planarians/drug effects/metabolism ; *Mucus/metabolism ; Humans ; *Antineoplastic Agents/pharmacology/chemistry ; Cytostatic Agents/pharmacology/chemistry ; Reactive Oxygen Species/metabolism ; Cell Line, Tumor ; Cell Proliferation/drug effects ; },
abstract = {Biological evolution has generated a vast array of natural compounds produced by organisms across all domains. Among these, secondary metabolites, selected to enhance an organism's competitiveness in its natural environment, make them a reservoir for discovering new compounds with cytotoxic activity, potentially useful as novel anticancer agents. Slime secretions, the first barrier between epithelial surfaces and the surrounding environment, frequently contain cytotoxic molecules to limit the growth of parasitic organisms. Planarians, freshwater Triclads, continuously secrete a viscous mucus with multiple physiological functions. The chemical composition of planarian mucus has been only partially elucidated, and there are no studies reporting its cytotoxic or cytostatic effects. In this study, we developed a protocol for collecting mucus from Dugesia japonica specimens and we demonstrated that it inhibits the growth of cancer cells by activating cytostatic and ROS-dependent cytotoxic mechanisms inducing lipid droplet accumulation and mitochondrial membrane reorganization. Although further research is needed to identify the specific chemicals responsible for the anticancer activity of planarian mucus, this work opens up numerous research avenues aimed at better understanding the mechanisms of action of this product for potential therapeutic applications.},
}

Animals
*Planarians/drug effects/metabolism
*Mucus/metabolism
Humans
*Antineoplastic Agents/pharmacology/chemistry
Cytostatic Agents/pharmacology/chemistry
Reactive Oxygen Species/metabolism
Cell Line, Tumor
Cell Proliferation/drug effects

@article {pmid39331563,
year = {2024},
author = {Kubota, K and Oishi, M and Taniguchi, E and Akazawa, A and Matsui, K and Kitazaki, K and Toyoda, A and Toh, H and Matsuhira, H and Kuroda, Y and Kubo, T},
title = {Mitochondrial phylogeny and distribution of cytoplasmic male sterility-associated genes in Beta vulgaris.},
journal = {PloS one},
volume = {19},
number = {9},
pages = {e0308551},
pmid = {39331563},
issn = {1932-6203},
mesh = {*Beta vulgaris/genetics ; *Phylogeny ; *Plant Infertility/genetics ; Mitochondria/genetics ; Polymorphism, Single Nucleotide ; Genes, Plant ; Genes, Mitochondrial ; Genome, Mitochondrial ; DNA, Mitochondrial/genetics ; },
abstract = {Cytoplasmic male sterility (CMS) is a mitochondrial-encoded trait that confers reproductive defects in males but not in females or any vegetative function. Why CMS is so often found in plants should be investigated from the viewpoint of mitochondrial phylogeny. Beta vulgaris, including the wild subspecies maritima and cultivated subspecies vulgaris (e.g., sugar beet), is known to be mitochondrially polymorphic, from which multiple CMS mitochondria have been found, but their evolutionary relationship has been obscure. We first refined the B. vulgaris reference mitochondrial genome to conduct a more accurate phylogenetic study. We identified mitochondrial single-nucleotide polymorphic sites from 600 B. vulgaris accessions. Principal component analysis, hierarchical clustering analysis, and creation of a phylogenetic tree consistently suggested that B. vulgaris mitochondria can be classified into several groups whose geographical distribution tends to be biased toward either the Atlantic or Mediterranean coasts. We examined the distribution of CMS-associated mitochondrial genes from Owen, E- and G-type CMS mitochondria. About one-third of cultivated beets had Owen-type CMS, which reflects the prevalence of using Owen-type CMS in hybrid breeding. Occurrence frequencies for each of the three CMS genes in wild beet were less than 4%. CMS genes were tightly associated with specific mitochondrial groups that are phylogenetically distinct, suggesting their independent origin. However, homologous sequences of the Owen type CMS gene occurred in several different mitochondrial groups, for which an intricate explanation is necessary. Whereas the origin of cultivated beet had been presumed to be Greece, we found an absence of Owen-type mitochondria in Greek accessions.},
}

*Beta vulgaris/genetics
*Phylogeny
*Plant Infertility/genetics
Mitochondria/genetics
Polymorphism, Single Nucleotide
Genes, Plant
Genes, Mitochondrial
Genome, Mitochondrial
DNA, Mitochondrial/genetics

@article {pmid39326543,
year = {2024},
author = {Rodriguez, E and Peng, B and Lane, N},
title = {Anaesthetics disrupt complex I-linked respiration and reverse the ATP synthase.},
journal = {Biochimica et biophysica acta. Bioenergetics},
volume = {1866},
number = {1},
pages = {149511},
doi = {10.1016/j.bbabio.2024.149511},
pmid = {39326543},
issn = {1879-2650},
abstract = {The mechanism of volatile general anaesthetics has long been a mystery. Anaesthetics have no structural motifs in common, beyond lipid solubility, yet all exert a similar effect. The fact that the inert gas xenon is an anaesthetic suggests their common mechanism might relate to physical rather than chemical properties. Electron transfer through chiral proteins can induce spin polarization. Recent work suggests that anaesthetics dissipate spin polarization during electron transfer to oxygen, slowing respiration. Here we show that the volatile anaesthetics isoflurane and sevoflurane specifically disrupt complex I-linked respiration in the thoraces of Drosophila melanogaster, with less effect on maximal respiration. Suppression of complex I-linked respiration was greatest with isoflurane. Using high-resolution tissue fluorespirometry, we show that these anaesthetics simultaneously increase mitochondrial membrane potential, implying reversal of the ATP synthase. Inhibition of ATP synthase with oligomycin prevented respiration and increased membrane potential back to the maximal (LEAK state) potential. Magnesium-green fluorescence predicted a collapse in ATP availability following a single anaesthetic dose, consistent with ATP hydrolysis through reversal of the ATP synthase. Raised membrane potential corresponded to a rise in ROS flux, especially with isoflurane. Anaesthetic doses causing respiratory suppression were in the same range as those that induce anaesthesia, although we could not establish tissue concentrations. Our findings show that anaesthetics suppress complex I-linked respiration with concerted downstream effects. But we cannot explain why only mutations in complex I, and not elsewhere in the electron-transfer system, confer hypersensitivity to anaesthetics.},
}

@article {pmid39308980,
year = {2024},
author = {Mendoza, H and Lamb, EA and Thomas, J and Tavares, DG and Schroeder, LA and Müller, C and Agrawal, N and Schirawski, J and Perlin, MH},
title = {Comparative mitogenomic analysis of Sporisorium reilianum f. sp. zeae suggests recombination events during its evolutionary history.},
journal = {Frontiers in physiology},
volume = {15},
number = {},
pages = {1264359},
pmid = {39308980},
issn = {1664-042X},
abstract = {INTRODUCTION: Modern understanding of the concept of genetic diversity must include the study of both nuclear and organellar DNA, which differ greatly in terms of their structure, organization, gene content and distribution. This study comprises an analysis of the genetic diversity of the smut fungus Sporisorium reilianum f. sp. zeae from a mitochondrial perspective.

METHODS: Whole-genome sequencing data was generated from biological samples of S. reilianum collected from different geographical regions. Multiple sequence alignment and gene synteny analysis were performed to further characterize genetic diversity in the context of mitogenomic polymorphisms.

RESULTS: Mitochondria of strains collected in China contained unique sequences. The largest unique sequence stretch encompassed a portion of cox1, a mitochondrial gene encoding one of the subunits that make up complex IV of the mitochondrial electron transport chain. This unique sequence had high percent identity to the mitogenome of the related species Sporisorium scitamineum and Ustilago bromivora.

DISCUSSION: The results of this study hint at potential horizontal gene transfer or mitochondrial genome recombination events during the evolutionary history of basidiomycetes. Additionally, the distinct polymorphic region detected in the Chinese mitogenome provides the ideal foundation to develop a diagnostic method to discern between mitotypes and enhance knowledge on the genetic diversity of this organism.},
}

@article {pmid39307735,
year = {2024},
author = {Zhang, YX and Fan, X and Zhang, M and Chen, YC and Zhao, YY and Jiao, HH and Zhang, G and Yuan, Y},
title = {[Influence of Tis108 on GA content and expression of key enzyme GeCYP714A1 involved in GA deactivation of Gastrodia elata].},
journal = {Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica},
volume = {49},
number = {15},
pages = {4007-4014},
doi = {10.19540/j.cnki.cjcmm.20240517.101},
pmid = {39307735},
issn = {1001-5302},
mesh = {*Gastrodia/genetics/chemistry ; *Gibberellins/pharmacology/metabolism ; *Plant Proteins/genetics/metabolism/chemistry ; Gene Expression Regulation, Plant/drug effects ; Lactones/pharmacology ; Phylogeny ; Amino Acid Sequence ; },
abstract = {To investigate the influence of the strigolactone inhibitor Tis108 on the growth of Gastrodia elata, this study treated G. elata tuber with Tis108 solution of 10 μmol·L~(-1) and measured the content of endogenous hormone gibberellin(GA) in the tuber. By using reverse transcription-polymerase chain reaction(RT-PCR) technology, the key enzyme GeCYP714A1 gene involved in GA deactivation was cloned. Bioinformatics analysis on the GeCYP714A1 gene was carried out by using ExPASy, SWISS-MODEL, MEGA, etc., and its expression levels in different parts of G. elata were determined. The results showed that after Tis108 treatment, GA content in G. elata tuber was significantly increased, and the transcription level of the GeCYP714A1 gene was significantly decreased. The full length of the coding region of the GeCYP714A1 gene is 1 173 bp, encoding 390 amino acids. The protein has a molecular weight of 44.85 kDa, a theoretical isoelectric point of 9.83, an instability index of 49.20, an aliphatic index of 89.03, and a grand average of hydropathicity of-0.235, classifying it as an unstable, basic, hydrophilic protein, and the GeCYP714A1 protein was localized in the mitochondria, lacking a signal peptide and a transmembrane structure. Phylogenetic tree analysis revealed that GeCYP714A1 was most closely related to the DcCYP714C2(PKU78454.1) protein from Dendrobium candidum, with a sequence identity of 67.25%. The qRT-PCR analysis of the expression patterns of the GeCYP714A1 gene indicated that GeCYP714A1 had the highest transcription level in G. elata tuber, followed by stem and inflorescence. The study represented that Tis108 inhibited the transcription level of GeCYP714A1 involved in GA deactivation in G. elata tuber, thereby increasing the accumulation of GA and affecting the growth of G. elata tuber. These results provided a basis for further studies of strigolactone regulation of GA signal and tuber development in G. elata.},
}

*Gastrodia/genetics/chemistry
*Gibberellins/pharmacology/metabolism
*Plant Proteins/genetics/metabolism/chemistry
Gene Expression Regulation, Plant/drug effects
Lactones/pharmacology
Phylogeny
Amino Acid Sequence

@article {pmid39303860,
year = {2024},
author = {Yong, Y and Hu, S and Zhong, M and Wen, Y and Zhou, Y and Ma, R and Jiang, X and Zhang, Q},
title = {Horizontal gene transfer from chloroplast to mitochondria of seagrasses in the yellow-Bohai seas.},
journal = {Genomics},
volume = {116},
number = {5},
pages = {110940},
doi = {10.1016/j.ygeno.2024.110940},
pmid = {39303860},
issn = {1089-8646},
mesh = {*Gene Transfer, Horizontal ; Genome, Mitochondrial ; Chloroplasts/genetics ; Genome, Chloroplast ; Alismatales/genetics/metabolism ; Phylogeny ; Mitochondria/genetics/metabolism ; },
abstract = {Seagrasses are ideal for studying plant adaptation to marine environments. In this study, the mitochondrial (mt) and chloroplast (cp) genomes of Ruppia sinensis were sequenced. The results showed an extensive gene loss in seagrasses, including a complete loss of cp-rpl19 genes in Zosteraceae, most cp-ndh genes in Hydrocharitaceae, and mt-rpl and mt-rps genes in all seagrasses, except for the mt-rpl16 gene in Phyllospadix iwatensis. Notably, most ribosomal protein genes were lost in the mt and cp genomes. The deleted cp genes were not transferred to the mt genomes through horizontal gene transfer. Additionally, a significant DNA transfer between seagrass organelles was found, with the mt genomes of Zostera containing numerous sequences from the cp genome. Rearrangement analyses revealed an unreported inversion of the cp genome in R. sinensis. Moreover, four positively selected genes (atp8, nad5, atp4, and ccmFn) and five variable regions (matR, atp4, atp8, rps7, and ccmFn) were identified.},
}

*Gene Transfer, Horizontal
Genome, Mitochondrial
Chloroplasts/genetics
Genome, Chloroplast
Alismatales/genetics/metabolism
Phylogeny
Mitochondria/genetics/metabolism

@article {pmid39300074,
year = {2024},
author = {Gitschlag, BL and Pereira, CV and Held, JP and McCandlish, DM and Patel, MR},
title = {Multiple distinct evolutionary mechanisms govern the dynamics of selfish mitochondrial genomes in Caenorhabditis elegans.},
journal = {Nature communications},
volume = {15},
number = {1},
pages = {8237},
pmid = {39300074},
issn = {2041-1723},
support = {R01 GM123260/GM/NIGMS NIH HHS/United States ; R35 GM133613/GM/NIGMS NIH HHS/United States ; F31 GM125344/GM/NIGMS NIH HHS/United States ; T32 GM008554/GM/NIGMS NIH HHS/United States ; R35 GM145378/GM/NIGMS NIH HHS/United States ; F31GM125344//U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS)/ ; R35GM133613//U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS)/ ; R35GM145378//U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS)/ ; R01GM123260//U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS)/ ; },
mesh = {Animals ; *Caenorhabditis elegans/genetics ; *Genome, Mitochondrial ; *DNA, Mitochondrial/genetics ; *Mutation ; *Evolution, Molecular ; Selection, Genetic ; Genetic Drift ; Models, Genetic ; Mitochondria/genetics/metabolism ; Genotype ; },
abstract = {Cells possess multiple mitochondrial DNA (mtDNA) copies, which undergo semi-autonomous replication and stochastic inheritance. This enables mutant mtDNA variants to arise and selfishly compete with cooperative (wildtype) mtDNA. Selfish mitochondrial genomes are subject to selection at different levels: they compete against wildtype mtDNA directly within hosts and indirectly through organism-level selection. However, determining the relative contributions of selection at different levels has proven challenging. We overcome this challenge by combining mathematical modeling with experiments designed to isolate the levels of selection. Applying this approach to many selfish mitochondrial genotypes in Caenorhabditis elegans reveals an unexpected diversity of evolutionary mechanisms. Some mutant genomes persist at high frequency for many generations, despite a host fitness cost, by aggressively outcompeting cooperative genomes within hosts. Conversely, some mutant genomes persist by evading inter-organismal selection. Strikingly, the mutant genomes vary dramatically in their susceptibility to genetic drift. Although different mechanisms can cause high frequency of selfish mtDNA, we show how they give rise to characteristically different distributions of mutant frequency among individuals. Given that heteroplasmic frequency represents a key determinant of phenotypic severity, this work outlines an evolutionary theoretic framework for predicting the distribution of phenotypic consequences among individuals carrying a selfish mitochondrial genome.},
}

Animals
*Caenorhabditis elegans/genetics
*Genome, Mitochondrial
*DNA, Mitochondrial/genetics
*Mutation
*Evolution, Molecular
Selection, Genetic
Genetic Drift
Models, Genetic
Mitochondria/genetics/metabolism
Genotype

@article {pmid39291629,
year = {2024},
author = {Karl, MT and Kim, YD and Rajendran, K and Manger, PR and Sherwood, CC},
title = {Invariance of Mitochondria and Synapses in the Primary Visual Cortex of Mammals Provides Insight Into Energetics and Function.},
journal = {The Journal of comparative neurology},
volume = {532},
number = {9},
pages = {e25669},
pmid = {39291629},
issn = {1096-9861},
support = {R24 NS092988/NS/NINDS NIH HHS/United States ; NS092988/NH/NIH HHS/United States ; EF-2021785//National Science Foundation/ ; DRL-2219759//National Science Foundation/ ; HG011641/NH/NIH HHS/United States ; R01 HG011641/HG/NHGRI NIH HHS/United States ; },
mesh = {Animals ; *Synapses/ultrastructure/metabolism ; *Mitochondria/ultrastructure/metabolism ; *Mammals ; *Primary Visual Cortex/physiology ; Energy Metabolism/physiology ; Species Specificity ; Visual Cortex/metabolism/cytology/physiology/ultrastructure ; Mice ; Humans ; },
abstract = {The cerebral cortex accounts for substantial energy expenditure, primarily driven by the metabolic demands of synaptic signaling. Mitochondria, the organelles responsible for generating cellular energy, play a crucial role in this process. We investigated ultrastructural characteristics of the primary visual cortex in 18 phylogenetically diverse mammals, spanning a broad range of brain sizes from mouse to elephant. Our findings reveal remarkable uniformity in synapse density, postsynaptic density (PSD) length, and mitochondria density, indicating functional and metabolic constraints that maintain these fundamental features. Notably, we observed an average of 1.9 mitochondria per synapse across mammalian species. When considered together with the trend of decreasing neuron density with larger brain size, we find that brain enlargement in mammals is characterized by increasing proportions of synapses and mitochondria per cortical neuron. These results shed light on the adaptive mechanisms and metabolic dynamics that govern cortical ultrastructure across mammals.},
}

Animals
*Synapses/ultrastructure/metabolism
*Mitochondria/ultrastructure/metabolism
*Mammals
*Primary Visual Cortex/physiology
Energy Metabolism/physiology
Species Specificity
Visual Cortex/metabolism/cytology/physiology/ultrastructure
Mice
Humans

@article {pmid39284909,
year = {2024},
author = {Brunetta, HS and Jung, AS and Valdivieso-Rivera, F and de Campos Zani, SC and Guerra, J and Furino, VO and Francisco, A and Berçot, M and Moraes-Vieira, PM and Keipert, S and Jastroch, M and Martinez, LO and Sponton, CH and Castilho, RF and Mori, MA and Bartelt, A},
title = {IF1 is a cold-regulated switch of ATP synthase hydrolytic activity to support thermogenesis in brown fat.},
journal = {The EMBO journal},
volume = {43},
number = {21},
pages = {4870-4891},
pmid = {39284909},
issn = {1460-2075},
support = {2022/00358-1//Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)/ ; 852742//EC | European Research Council (ERC)/ ; BA4925/2-1//Deutsche Forschungsgemeinschaft (DFG)/ ; 81X3600212//Deutsches Zentrum für Herz-Kreislaufforschung (DZHK)/ ; 310287/2018-9//Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)/ ; 88881.143924/2017-01//Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)/ ; },
mesh = {Animals ; *Thermogenesis/genetics ; Mice ; *Adipose Tissue, Brown/metabolism ; *Cold Temperature ; *ATPase Inhibitory Protein ; *Mitochondrial Proton-Translocating ATPases/metabolism/genetics ; Hydrolysis ; Mitochondria/metabolism ; Mice, Inbred C57BL ; Male ; Adipocytes, Brown/metabolism ; Membrane Potential, Mitochondrial ; Energy Metabolism ; },
abstract = {While mechanisms controlling uncoupling protein-1 (UCP1) in thermogenic adipocytes play a pivotal role in non-shivering thermogenesis, it remains unclear whether F1Fo-ATP synthase function is also regulated in brown adipose tissue (BAT). Here, we show that inhibitory factor 1 (IF1, encoded by Atp5if1), an inhibitor of ATP synthase hydrolytic activity, is a critical negative regulator of brown adipocyte energy metabolism. In vivo, IF1 levels are diminished in BAT of cold-adapted mice compared to controls. Additionally, the capacity of ATP synthase to generate mitochondrial membrane potential (MMP) through ATP hydrolysis (the so-called "reverse mode" of ATP synthase) is increased in brown fat. In cultured brown adipocytes, IF1 overexpression results in an inability of mitochondria to sustain the MMP upon adrenergic stimulation, leading to a quiescent-like phenotype in brown adipocytes. In mice, adeno-associated virus-mediated IF1 overexpression in BAT suppresses adrenergic-stimulated thermogenesis and decreases mitochondrial respiration in BAT. Taken together, our work identifies downregulation of IF1 upon cold as a critical event for the facilitation of the reverse mode of ATP synthase as well as to enable energetic adaptation of BAT to effectively support non-shivering thermogenesis.},
}

Animals
*Thermogenesis/genetics
Mice
*Adipose Tissue, Brown/metabolism
*Cold Temperature
*ATPase Inhibitory Protein
*Mitochondrial Proton-Translocating ATPases/metabolism/genetics
Hydrolysis
Mitochondria/metabolism
Mice, Inbred C57BL
Male
Adipocytes, Brown/metabolism
Membrane Potential, Mitochondrial
Energy Metabolism

@article {pmid39280847,
year = {2024},
author = {Golubenko, MV and Puzyrev, VP},
title = {Liberties of the genome: insertions of mitochondrial DNA fragments into nuclear genome.},
journal = {Vavilovskii zhurnal genetiki i selektsii},
volume = {28},
number = {5},
pages = {467-475},
doi = {10.18699/vjgb-24-53},
pmid = {39280847},
issn = {2500-0462},
abstract = {The transition of detached fragments of mitochondrial DNA into the nucleus and their integration into chromosomal DNA is a special kind of genetic variability that highlights the relation between the two genomes and their interaction in a eukaryotic cell. The human genome contains several hundreds of insertions of mtDNA fragments (NUMTS). This paper presents an overview of the current state of research in this area. To date, evidence has been obtained that the occurrence of new mtDNA insertions in the nuclear genome is a seldom but not exceptionally rare event. The integration of new mtDNA fragments into the nuclear genome occurs during double-strand DNA break repair through the non-homologous end joining mechanism. Along with evolutionarily stable "genetic fossils" that were integrated into the nuclear genome millions of years ago and are shared by many species, there are NUMTS that could be species-specific, polymorphic in a species, or "private". Partial copies of mitochondrial DNA in the human nuclear genome can interfere with mtDNA during experimental studies of the mitochondrial genome, such as genotyping, heteroplasmy assessment, mtDNA methylation analysis, and mtDNA copy number estimation. In some cases, the insertion of multiple copies of the complete mitochondrial genome sequence may mimic paternal inheritance of mtDNA. The functional significance of NUMTS is poorly understood. For instance, they may be a source of variability for expression and splicing modulation. The role of NUMTS as a cause of hereditary diseases is negligible, since only a few cases of diseases caused by NUMTS have been described so far. In addition, NUMTS can serve as markers for evolutionary genetic studies. Of particular interest is the meaning of NUMTS in eukaryotic genome evolution. The constant flow of functionally inactive DNA sequences from mitochondria into the nucleus and its significance could be studied in view of the modern concepts of evolutionary theory suggesting non-adaptive complexity and the key role of stochastic processes in the formation of genomic structure.},
}

@article {pmid39264945,
year = {2024},
author = {Zang, C and Wang, X and Liu, Y and Wang, H and Sun, Q and Cheng, P and Zhang, Y and Gong, M and Liu, H},
title = {Wolbachia and mosquitoes: Exploring transmission modes and coevolutionary dynamics in Shandong Province, China.},
journal = {PLoS neglected tropical diseases},
volume = {18},
number = {9},
pages = {e0011944},
pmid = {39264945},
issn = {1935-2735},
mesh = {*Wolbachia/physiology/genetics ; Animals ; *Culex/microbiology/virology/physiology ; China ; *Mosquito Vectors/microbiology/physiology ; Symbiosis ; Female ; Vector Borne Diseases/transmission ; Biological Coevolution ; Male ; },
abstract = {Vector-borne diseases leave a large footprint on global health. Notable culprits include West Nile virus (WNV), St. Louis encephalitis virus (SLEV), and Japanese encephalitis virus (JEV), all transmitted by Culex mosquitoes. Chemical insecticides have been widely used to reduce the spread of mosquito-borne diseases. Still, mosquitoes are becoming more and more resistant to most chemical insecticides which cause particular harm to the ecology. Wolbachia belongs to the family Ehrlichiaceae in the order Rickettsiales and is a matrilineally inherited endosymbiont present in 60% of insects in nature. Wolbachia is capable of inducing a wide range of reproductive abnormalities in its hosts, such as cytoplasmic incompatibility, and can alter mosquito resistance to pathogen infection. Wolbachia has been proposed as a biological alternative to chemical vector control, and specific research progress and effectiveness have been achieved. Despite the importance of Wolbachia, this strategy has not been tested in Culex pipiens pallens, the most prevalent mosquito species in Shandong Province, China. Little is known about how the mass release of Wolbachia-infected mosquitoes may impact the genetic structure of Culex pipiens pallens, and how the symbiotic bacterium Wolbachia interacts with mitochondria during host mosquito transmission. Based on the population genetic structure of Culex pipiens pallens in Shandong Province, this study investigated the infection rate and infection type of Wolbachia in Shandong Province and jointly analysed the evolutionary relationship between the host mosquito and the symbiotic bacterium Wolbachia. Our study showed that Wolbachia naturally infected by Culex pipiens pallens in Shandong Province was less homologous to Wolbachia infected by Aedes albopictus released from mosquito factory in Guangzhou. Our results also show that Culex pipiens pallens is undergoing demographic expansion in Shandong Province. The overall Wolbachia infection rate of Culex pipiens pallens was 92.8%, and a total of 15 WSP haplotypes were detected. We found that the genetic diversity of Wolbachia was low in Culex pipiens pallens from Shandong Province, and the mosquitoes were infected only with type B Wolbachia. Visualizing the relationship between Culex pipiens pallens and Wolbachia using a tanglegram revealed patterns of widespread associations. A specific coevolutionary relationship exists between the host mosquito and Wolbachia. Knowledge of this mosquito-Wolbachia relationship will provide essential scientific information required for Wolbachia-based vector control approaches in Shandong Province and will lead to a better understanding of the diversity and evolution of Wolbachia for its utility as a biocontrol agent.},
}

*Wolbachia/physiology/genetics
Animals
*Culex/microbiology/virology/physiology
China
*Mosquito Vectors/microbiology/physiology
Symbiosis
Female
Vector Borne Diseases/transmission
Biological Coevolution
Male

@article {pmid39261613,
year = {2024},
author = {Vosseberg, J and van Hooff, JJE and Köstlbacher, S and Panagiotou, K and Tamarit, D and Ettema, TJG},
title = {The emerging view on the origin and early evolution of eukaryotic cells.},
journal = {Nature},
volume = {633},
number = {8029},
pages = {295-305},
pmid = {39261613},
issn = {1476-4687},
mesh = {Animals ; Archaea/classification/cytology ; Bacteria/classification/cytology/metabolism ; *Biological Evolution ; *Eukaryota/classification/cytology/metabolism ; *Eukaryotic Cells/cytology/metabolism ; Mitochondria/metabolism ; Phylogeny ; Prokaryotic Cells/cytology/metabolism/classification ; *Symbiosis ; *Models, Biological ; },
abstract = {The origin of the eukaryotic cell, with its compartmentalized nature and generally large size compared with bacterial and archaeal cells, represents a cornerstone event in the evolution of complex life on Earth. In a process referred to as eukaryogenesis, the eukaryotic cell is believed to have evolved between approximately 1.8 and 2.7 billion years ago from its archaeal ancestors, with a symbiosis with a bacterial (proto-mitochondrial) partner being a key event. In the tree of life, the branch separating the first from the last common ancestor of all eukaryotes is long and lacks evolutionary intermediates. As a result, the timing and driving forces of the emergence of complex eukaryotic features remain poorly understood. During the past decade, environmental and comparative genomic studies have revealed vital details about the identity and nature of the host cell and the proto-mitochondrial endosymbiont, enabling a critical reappraisal of hypotheses underlying the symbiotic origin of the eukaryotic cell. Here we outline our current understanding of the key players and events underlying the emergence of cellular complexity during the prokaryote-to-eukaryote transition and discuss potential avenues of future research that might provide new insights into the enigmatic origin of the eukaryotic cell.},
}

Animals
Archaea/classification/cytology
Bacteria/classification/cytology/metabolism
*Biological Evolution
*Eukaryota/classification/cytology/metabolism
*Eukaryotic Cells/cytology/metabolism
Mitochondria/metabolism
Phylogeny
Prokaryotic Cells/cytology/metabolism/classification
*Symbiosis
*Models, Biological

@article {pmid39252884,
year = {2024},
author = {Thoral, E and Dawson, NJ and Bettinazzi, S and Rodríguez, E},
title = {An evolving roadmap: using mitochondrial physiology to help guide conservation efforts.},
journal = {Conservation physiology},
volume = {12},
number = {1},
pages = {coae063},
pmid = {39252884},
issn = {2051-1434},
abstract = {The crucial role of aerobic energy production in sustaining eukaryotic life positions mitochondrial processes as key determinants of an animal's ability to withstand unpredictable environments. The advent of new techniques facilitating the measurement of mitochondrial function offers an increasingly promising tool for conservation approaches. Herein, we synthesize the current knowledge on the links between mitochondrial bioenergetics, ecophysiology and local adaptation, expanding them to the wider conservation physiology field. We discuss recent findings linking cellular bioenergetics to whole-animal fitness, in the current context of climate change. We summarize topics, questions, methods, pitfalls and caveats to help provide a comprehensive roadmap for studying mitochondria from a conservation perspective. Our overall aim is to help guide conservation in natural populations, outlining the methods and techniques that could be most useful to assess mitochondrial function in the field.},
}

@article {pmid39243912,
year = {2024},
author = {Liu, GH and Zuo, YW and Shan, Y and Yu, J and Li, JX and Chen, Y and Gong, XY and Liao, XM},
title = {Structural analysis of the mitochondrial genome of Santalum album reveals a complex branched configuration.},
journal = {Genomics},
volume = {116},
number = {5},
pages = {110935},
doi = {10.1016/j.ygeno.2024.110935},
pmid = {39243912},
issn = {1089-8646},
mesh = {*Genome, Mitochondrial ; *Santalum/genetics ; *Phylogeny ; RNA Editing ; RNA, Transfer/genetics/chemistry ; Plant Proteins/genetics/metabolism/chemistry ; },
abstract = {BACKGROUND: Santalum album L. is an evergreen tree which is mainly distributes throughout tropical and temperate regions. And it has a great medicinal and economic value.

RESULTS: In this study, the complete mitochondrial genome of S. album were assembled and annotated, which could be descried by a complex branched structure consisting of three contigs. The lengths of these three contigs are 165,122 bp, 93,430 bp and 92,491 bp. We annotated 34 genes coding for proteins (PCGs), 26 tRNA genes, and 4 rRNA genes. The analysis of repeated elements shows that there are 89 SSRs and 242 pairs of dispersed repeats in S. album mitochondrial genome. Also we found 20 MTPTs among the chloroplast and mitochondria. The 20 MTPTs sequences span a combined length of 22,353 bp, making up 15.52 % of the plastome, 6.37 % of the mitochondrial genome. Additionally, by using the Deepred-mt tool, we found 628 RNA editing sites in 34 PCGs. Moreover, significant genomic rearrangement is observed between S. album and its associated mitochondrial genomes. Finally, based on mitochondrial genome PCGs, we deduced the phylogenetic ties between S. album and other angiosperms.

CONCLUSIONS: We reported the mitochondrial genome from Santalales for the first time, which provides a crucial genetic resource for our study of the evolution of mitochondrial genome.},
}

*Genome, Mitochondrial
*Santalum/genetics
*Phylogeny
RNA Editing
RNA, Transfer/genetics/chemistry
Plant Proteins/genetics/metabolism/chemistry

@article {pmid39232676,
year = {2024},
author = {Ou, T and Wu, Z and Tian, C and Yang, Y and Li, Z},
title = {Complete mitochondrial genome of Agropyron cristatum reveals gene transfer and RNA editing events.},
journal = {BMC plant biology},
volume = {24},
number = {1},
pages = {830},
pmid = {39232676},
issn = {1471-2229},
mesh = {*Genome, Mitochondrial ; *RNA Editing ; *Agropyron/genetics ; RNA, Transfer/genetics ; Phylogeny ; Genome, Plant ; },
abstract = {BACKGROUND: As an important forage in arid and semi-arid regions, Agropyron cristatum provides livestock with exceptionally high nutritional value. Additionally, A. cristatum exhibits outstanding genetic characteristics to endure drought and disease. Therefore, rich genetic diversity serves as a cornerstone for the improvement of major food crops. The purposes of this study were to systematically describe mitogenome of A.cristatum and preliminarily analyze its internal variations.

RESULT: The A. cristatum mitogenome was a single-ring molecular structure of 381,065 bp that comprised 52 genes, including 35 protein-coding, 3 rRNA and 14 tRNA genes. Among these, two pseudoprotein-coding genes and multiple copies of tRNA genes were observed. A total of 320 repetitive sequences was found to cover more than 10% of the mitogenome (105 simple sequences, 185 dispersed and 30 tandem repeats), which led to a large number of fragment rearrangements in the mitogenome of A. cristatum. Leucine was the most frequent amino acid (n = 1087,10.8%) in the protein-coding genes of A. cristatum mitogenome, and the highest usage codon was ATG (initiation codon). The number of A/T changes at the third base of the codon was much higher than that of G/C. Among 23 PCGs, the range of Pi values is from 0.0021 to 0.0539, with an average of 0.013. Additionally, 81 RNA editing sites were predicted, which were considerably fewer than those reported in other plant mitogenomes. Most of the RNA editing site base positions were concentrated at the first and second codon bases, which were C to T transitions. Moreover, we identified 95 sequence fragments (total length of 34, 343 bp) that were transferred from the chloroplast to mitochondria genes, introns, and intergenic regions. The stability of the tRNA genes was maintained during this process. Selection pressure analysis of 23 protein-coding genes shared by 15 Poaceae plants, showed that most genes were subjected to purifying selection during evolution, whereas rps4, cob, mttB, and ccmB underwent positive selection in different plants. Finally, a phylogenetic tree was constructed based on 22 plant mitogenomes, which showed that Agropyron plants have a high degree of independent heritability in Triticeae.

CONCLUSION: The findings of this study provide new data for a better understanding of A. cristatum genes, and demonstrate that mitogenomes are suitable for the study of plant classifications, such as those of Agropyron. Moreover, it provides a reference for further exploration of the phylogenetic relationships within Agropyron species, and establishes a theoretical basis for the subsequent development and utilization of A. cristatum plant germplasm resources.},
}

*Genome, Mitochondrial
*RNA Editing
*Agropyron/genetics
RNA, Transfer/genetics
Phylogeny
Genome, Plant

@article {pmid39231786,
year = {2024},
author = {Duan, X and Shi, X and Zhang, P and Du, X and Chen, S and Zhang, L and Li, H and Zhang, Y and Wang, J and Ding, Y and Liu, S},
title = {Identification of concurrent infection with Jaagsiekte sheep retrovirus and maedi-visna virus in China.},
journal = {Journal of veterinary science},
volume = {25},
number = {5},
pages = {e61},
pmid = {39231786},
issn = {1976-555X},
support = {2021ZD0010//Science and Technology Major Project of Inner Mongolia/China ; 20151031//Grassland Talents Innovative Team Project of Inner Mongolia/China ; BR22-13-08//Innovation Team Project of Cattle and Sheep Disease Prevention and Development Engineering of Inner Mongolia/China ; NMGIRT2412//Veterinary Basic and Cattle and Sheep Disease Prevention and Control Technology Research and Innovation Team Project/China ; B20231072Z//Postgraduate Research Innovation Funding Program/China ; 32072819/NNSFC/National Natural Science Foundation of China/China ; 32360863/NNSFC/National Natural Science Foundation of China/China ; },
mesh = {Animals ; *Jaagsiekte sheep retrovirus ; Sheep ; China ; *Pulmonary Adenomatosis, Ovine/virology/pathology ; *Visna-maedi virus ; Male ; Coinfection/veterinary/virology ; Phylogeny ; Lung/virology/pathology ; Sheep Diseases/virology/pathology ; Visna/virology/pathology ; },
abstract = {IMPORTANCE: Ovine pulmonary adenomatosis (OPA) and maedi-visna disease (MVD) are chronic and progressive infectious diseases in sheep caused by Jaagsiekte sheep retrovirus (JSRV) and maedi-visna virus (MVV), respectively.

OBJECTIVE: To investigate the pathological changes and conduct viral gene analysis of OPA and MVD co-occurrence in Inner Mongolia, China.

METHODS: Using gross pathology, histopathology, immunohistochemistry, ultrastructural pathology, PCR, and sequence analysis, we investigated the concurrent infection of JSRV and MVV in 319 Dorper rams slaughtered in a private slaughterhouse in Inner Mongolia, in 2022.

RESULTS: Of the 319 rams included, 3 showed concurrent JSRV and MVV infection. Gross lung pathology showed diffuse enlargement, consolidation, and greyish-white miliary nodules on the lung surface; the trachea was filled with a white foamy fluid; hilar and mediastinal lymph nodes were significantly enlarged. Histopathology results revealed typical OPA and MVD lesions in the lung tissue. Immunohistochemical results were positive for JSRV envelope protein (Env) in the tumor cells and MVV CA in alveolar macrophages. Transmission electron microscopy showed several virions and autophagosomes in the lung tissue, severely damaged mitochondria, and the induced mitophagy. Nucleotide sequences obtained for JSRV env and MVV gag showed the highest homology with the Inner Mongolian strains of JSRV env (JQ837489) and MVV gag (MW248464).

CONCLUSIONS AND RELEVANCE: Our study confirmed that OPA and MVD co-occurrence and identified the pathological changes in Inner Mongolia, China, thereby providing references for the identification of concurrent JSRV and MVV infections.},
}

Animals
*Jaagsiekte sheep retrovirus
Sheep
China
*Pulmonary Adenomatosis, Ovine/virology/pathology
*Visna-maedi virus
Male
Coinfection/veterinary/virology
Phylogeny
Lung/virology/pathology
Sheep Diseases/virology/pathology
Visna/virology/pathology