Article
Genetics & Heredity
Christelle Fraisse, Himani Sachdeva
Summary: Sex chromosomes play a major role in reproductive isolation between species, with reduced levels of introgression compared to autosomes. Theoretical predictions and empirical data show that sex chromosomes and autosomes have differences in their ability to restrict gene flow, impacting species differentiation and formation.
Article
Multidisciplinary Sciences
Wenwen Wang, Yujia Yang, Suxu Tan, Tao Zhou, Yang Liu, Changxu Tian, Lisui Bao, De Xing, Baofeng Su, Jinhai Wang, Yu Zhang, Shikai Liu, Huitong Shi, Dongya Gao, Rex Dunham, Zhanjiang Liu
Summary: The X and Y chromosomes of channel catfish have the same gene contents. The X-borne hydin-1 gene is silenced, while the Y-borne hydin-1 gene is expressed, resulting in monoallelic expression of hydin-1 responsible for sex determination, similar to genomic imprinting. Treatment with a methylation inhibitor, 5-aza-dC, erases the epigenetic marks and causes sex reversal.
Article
Biochemistry & Molecular Biology
Vaclav Bacovsky, Tomas Janicek, Roman Hobza
Summary: This study used hydroxyurea cell synchronization and 2D/3D microscopy to determine the position of sex chromosomes during the mitotic cell cycle and explored the upper limit for the expansion of the non-recombining region of sex chromosomes. The results showed that the velocity of large chromosomes is compensated by their distant positioning from the central interpolar axis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Ziwen Wang, Wei Luo, Jun Ping, Yun Xia, Jianghong Ran, Xiaomao Zeng
Summary: Research shows that sex-linked genes have limited impact on speciation in amphibians, both in species with degenerated sex chromosomes and those with newly evolved sex chromosomes.
Review
Biology
Matthias Stoeck, Dmitrij Dedukh, Radka Reifova, Dunja K. Lamatsch, Zuzana Starostova, Karel Janko
Summary: The roles of sex chromosomes in vertebrate hybridization and speciation are dependent on the level of divergence, affecting the degree of reproductive isolation. Undifferentiated sex chromosomes are more susceptible to introgression and may give rise to new sex chromosome systems.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Drew R. Schield, Elizabeth S. C. Scordato, Chris C. R. Smith, Javan K. Carter, Sidi Imad Cherkaoui, Sundev Gombobaatar, Said Hajib, Saad Hanane, Amanda K. Hund, Kazuo Koyama, Wei Liang, Yang Liu, Najib Magri, Alexander Rubtsov, Basma Sheta, Sheela P. Turbek, Matthew R. Wilkins, Liu Yu, Rebecca J. Safran
Summary: Sex chromosomes exhibit unique patterns of genetic variation influenced by mutation, recombination, genetic drift, and selection, different from autosomes. This study found that the barn swallow mating system, demographic history, and linked selection contribute to low Z-linked diversity and high differentiation. The results suggest that barriers to hybridization on the Z chromosome are due to selection.
Letter
Biochemistry & Molecular Biology
Wei-Ping Zhang, Lei Cao, Xin-Rui Lin, Ya-Mei Ding, Yu Liang, Da-Yong Zhang, Er-Li Pang, Susanne S. Renner, Wei-Ning Bai
Summary: The Chinese walnut, Juglans hopeiensis, is a first-generation hybrid resulting from the hybridization between Persian walnut and Asian butternuts. Despite the presence of strong postzygotic barriers preventing sexual reproduction in hybrids and unique traits, Juglans hopeiensis does not appear to be on the path to speciation.
MOLECULAR BIOLOGY AND EVOLUTION
(2022)
Article
Biochemistry & Molecular Biology
Marwan Elkrewi, Mikhail A. Moldovan, Marion A. L. Picard, Beatriz Vicoso
Summary: This study characterizes the gene content and evolution of the W-chromosomes in Schistosoma mansoni and S. japonicum. W-linked genes show evidence of degeneration, with high rates of protein evolution and reduced expression, mainly located in young lineage-specific strata. The splicing factor u2af2 is highlighted as a potential candidate for primary sex determination.
MOLECULAR BIOLOGY AND EVOLUTION
(2021)
Article
Biochemical Research Methods
Rui Zhang, Xumin Ni, Kai Yuan, Yuwen Pan, Shuhua Xu
Summary: This study presents a novel algorithm, MultiWaverX, for modeling complex admixture history with sex-biased gene flow. Application of MultiWaverX to empirical data revealed sex-biased admixture histories in various populations.
BRIEFINGS IN BIOINFORMATICS
(2022)
Review
Cell Biology
Monika Cechova, Karen H. Miga
Summary: This review focuses on the biology of satellite DNA on human X and Y chromosomes and its impact on sex chromosome aneuploidies. The findings provide insights into the prevalence and consequences of these aneuploidies.
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Emily E. Bendall, Robin K. Bagley, Vitor C. Sousa, Catherine R. Linnen
Summary: This study examines the genetic evolution effects of haplodiploidy, finding that haploidy leads to higher genomic differentiation in the presence of divergent selection and gene flow. Analyses of pine sawfly populations support a history of continuous gene exchange during divergence, and simulations suggest that divergent selection leads to higher differentiation in haplodiploid populations.
Article
Biodiversity Conservation
Liliana M. Mola, Pablo J. Rebagliati, Maria F. Fourastie, Silvia S. Agopian
Summary: This study investigated the meiosis of three gomphid species from Argentina and found a positive correlation between the size of the X chromosome and the amount of heterochromatin. The results suggest that the large size of the X chromosome may be due to the accumulation of repetitive DNA and heterochromatin rather than fusion.
Review
Cardiac & Cardiovascular Systems
Rubina Tabassum, Elisabeth Widen, Samuli Ripatti
Summary: Cardiovascular diseases (CVD) are the leading cause of death worldwide for both men and women, but their prevalence and burden show marked sex differences. This review focuses on the sex differences in plasma lipids and the potential contributions of genetic factors and sex-specific physiological factors to the disparities in lipidomic profiles. The advancement of technology has made it possible to explore individual lipid species, collectively called the lipidome, which may provide further insights into the understanding of sex differences in CVD.
Review
Genetics & Heredity
Daven C. Presgraves, Colin D. Meiklejohn
Summary: The three fruitfly species of the Drosophila simulans clade have been important models in speciation genetics for over 40 years. They exhibit reproductive isolation due to various factors and hybrid male sterility has been a key focus of genetic scrutiny. The genetic conflicts, polygenic nature, and role of gene flow in speciation have challenged classical views of speciation.
FRONTIERS IN GENETICS
(2021)
Editorial Material
Ecology
Yukiko M. Yamashita
Summary: A study manipulating heterochromatin content in Drosophila Y chromosomes found no association between Y chromosome length and longevity, challenging the hypothesis that Y chromosome-derived heterochromatin causes shorter lifespan in Y chromosome-bearing animals.
NATURE ECOLOGY & EVOLUTION
(2023)
Article
Plant Sciences
Lachezar A. Nikolov, Philip Shushkov, Bruno Nevado, Xiangchao Gan, Ihsan A. Al-Shehbaz, Dmitry Filatov, C. Donovan Bailey, Miltos Tsiantis
Article
Genetics & Heredity
Paris Veltsos, Kate E. Ridout, Melissa A. Toups, Santiago C. Gonzalez-Martinez, Aline Muyle, Olivier Emery, Pasi Rastas, Vojtech Hudzieczek, Roman Hobza, Boris Vyskot, Gabriel A. B. Marais, Dmitry A. Filatov, John R. Pannell
Article
Biochemistry & Molecular Biology
Edgar L. Y. Wong, Bruno Nevado, Owen G. Osborne, Alexander S. T. Papadopulos, Jon R. Bridle, Simon J. Hiscock, Dmitry A. Filatov
Article
Genetics & Heredity
Marc Krasovec, Yu Zhang, Dmitry A. Filatov
Article
Evolutionary Biology
Marc Krasovec, Rosalind E. M. Rickaby, Dmitry A. Filatov
GENOME BIOLOGY AND EVOLUTION
(2020)
Article
Biochemistry & Molecular Biology
Dmitry A. Filatov, El Mahdi Bendif, Odysseas A. Archontikis, Kyoko Hagino, Rosalind E. M. Rickaby
Summary: Researchers found that speciation of marine phytoplankton is related to glacial phases, with geographic or oceanographic barriers playing important roles in population divergence and speciation. The similarity across multiple speciation events further confirms this inference.
Article
Engineering, Marine
Marc Krasovec, Dmitry A. Filatov
Summary: This study provides a comparative analysis of codon bias across multiple major phytoplankton groups. The results show that most groups have modest codon bias, with Haptophyta having the strongest bias and Chlorarachniophyta having the weakest bias. The optimal codons are typically GC-ending, but shifts to AT-ending codons were observed in Ochrophyta and Ciliophora. The study also highlights the modest codon bias in marine phytoplankton, which can be explained by the lower effective population sizes compared to the astronomically large census population sizes.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Ecology
Greg M. Walter, James Clark, Antonia Cristaudo, Delia Terranova, Bruno Nevado, Stefania Catara, Momchil Paunov, Violeta Velikova, Dmitry Filatov, Salvatore Cozzolino, Simon J. Hiscock, Jon R. Bridle
Summary: The evolution of distinct plastic responses to environmental variation is associated with adaptive divergence in closely related Sicilian daisy species.
Article
Biology
Wei Gong, Dmitry A. Filatov
Summary: Sex-determining region (SDR) in Ginkgo biloba is located in the middle of chromosome 2 and is fixed in a region of about 50 Mb, with a small non-recombining region of less than 5 Mb in males. The SDR in Ginkgo is inferred to be of Cretaceous origin based on the synonymous divergence between homologous X- and Y-linked genes. The SDR in Ginkgo exhibits only slight Y-degeneration, consistent with other dioecious plants with homomorphic sex chromosomes.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Ecology
Dmitry A. Filatov
Summary: The shift of the pseudoautosomal boundary on the sex chromosomes of Silene latifolia has led to an expansion of the non-recombining sex-specific region (NRY), including at least 16 pseudoautosomal genes. The pseudoautosomal genes in this region have elevated genetic diversity, likely due to balancing selection. Interspecific gene flow between S. latifolia and S. dioica may contribute to the recent shift of the pseudoautosomal boundary.
JOURNAL OF EVOLUTIONARY BIOLOGY
(2022)
Review
Plant Sciences
Edgar L. Y. Wong, Simon J. Hiscock, Dmitry A. Filatov
Summary: Hybridisation plays a significant role in plant adaptation and speciation, and the genus Senecio has been extensively studied to understand its effects. This article provides an overview of the process of hybridisation and the research conducted in this field, focusing on the genomic, transcriptomic, ecological, and physiological consequences from the perspective of the hybrids. It highlights the importance of hybridisation in promoting adaptation and speciation and the research potential of Senecio.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Yusuke Kazama, Moe Kitoh, Taiki Kobayashi, Kotaro Ishii, Marc Krasovec, Yasuo Yasui, Tomoko Abe, Shigeyuki Kawano, Dmitry A. Filatov
Summary: This study investigates the evolution of separate sexes in plants and identifies a putative sex-determining gene in Silene latifolia. The study suggests that male and female development in S. latifolia is controlled by the WUSCHEL-CLAVATA feedback loop, with X-linked and Y-linked genes playing distinct roles. The findings provide insights into the evolution of dioecy and the genetic mechanisms underlying sex determination in plants.
MOLECULAR BIOLOGY AND EVOLUTION
(2022)
Article
Ecology
Edgar L. Y. Wong, Bruno Nevado, Simon J. J. Hiscock, Dmitry A. A. Filatov
Summary: This study investigates the phenotypic variation and hybrid breakdown in crosses between closely-related species and their homoploid hybrid species, providing insights into the rapid evolution of reproductive incompatibilities despite on-going gene flow.
Article
Ecology
El Mahdi Bendif, Ian Probert, Odysseas A. Archontikis, Jeremy R. Young, Luc Beaufort, Rosalind E. Rickaby, Dmitry Filatov
Summary: This study investigates the evolutionary relationships and ecological adaptations of G. huxleyi morphotypes across different environments. Results show that G. huxleyi is actually composed of at least three distinct species, and their divergence is related to glacial-cycle dynamics.
Article
Genetics & Heredity
Dmitry A. Filatov
Summary: The evolution of a non-recombining sex-specific region is a key step in sex chromosome evolution. Recombination suppression on sex chromosomes involves multiple mechanisms and remains controversial.