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Insights into the karyotype and genome evolution of haplogyne spiders indicate a polyploid origin of lineage with holokinetic chromosomes

  1. 1.
    SYSNO ASEP0502097
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleInsights into the karyotype and genome evolution of haplogyne spiders indicate a polyploid origin of lineage with holokinetic chromosomes
    Author(s) Král, J. (CZ)
    Forman, M. (CZ)
    Kořínková, T. (CZ)
    Reyes Lerma, A. C. (CZ)
    Haddad, C. R. (ZA)
    Musilová, J. (CZ)
    Řezáč, M. (CZ)
    Ávila Herrera, I. M. (CZ)
    Thakur, S. (CZ)
    Dippenaar-Schoeman, A. S. (ZA)
    Marec, František (BC-A) RID, ORCID
    Horová, L. (CZ)
    Bureš, P. (CZ)
    Number of authors13
    Article number3001
    Source TitleScientific Reports. - : Nature Publishing Group - ISSN 2045-2322
    Roč. 9, FEB 28 (2019)
    Number of pages14 s.
    Languageeng - English
    CountryGB - United Kingdom
    KeywordsGC content evolution ; sex-chromosomes ; holocentric chromosomes
    Subject RIVEB - Genetics ; Molecular Biology
    OECD categoryGenetics and heredity (medical genetics to be 3)
    R&D ProjectsGA16-10298S GA ČR - Czech Science Foundation (CSF)
    Method of publishingOpen access
    Institutional supportBC-A - RVO:60077344
    UT WOS000459891700012
    EID SCOPUS85062288743
    DOI10.1038/s41598-019-39034-3
    AnnotationSpiders are an ancient and extremely diverse animal order. They show a considerable diversity of genome sizes, karyotypes and sex chromosomes, which makes them promising models to analyse the evolution of these traits. Our study is focused on the evolution of the genome and chromosomes in haplogyne spiders with holokinetic chromosomes. Although holokinetic chromosomes in spiders were discovered a long time ago, information on their distribution and evolution in these arthropods is very limited. Here we show that holokinetic chromosomes are an autapomorphy of the superfamily Dysderoidea. According to our hypothesis, the karyotype of ancestral Dysderoidea comprised three autosome pairs and a single X chromosome. The subsequent evolution has frequently included inverted meiosis of the sex chromosome and an increase of 2n. We demonstrate that caponiids, a sister clade to Dysderoidea, have enormous genomes and high diploid and sex chromosome numbers. This pattern suggests a polyploid event in the ancestors of caponiids. Holokinetic chromosomes could have arisen by subsequent multiple chromosome fusions and a considerable reduction of the genome size. We propose that spider sex chromosomes probably do not pose a major barrier to polyploidy due to specific mechanisms that promote the integration of sex chromosome copies into the genome.
    WorkplaceBiology Centre (since 2006)
    ContactDana Hypšová, eje@eje.cz, Tel.: 387 775 214
    Year of Publishing2020
    Electronic addresshttps://www.nature.com/articles/s41598-019-39034-3.pdf
Number of the records: 1  

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