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  • Zerbinato de Andrade Silva, Duilio MazzoniUniv Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil. (författare)

Long-term persistence of supernumerary B chromosomes in multiple species of Astyanax fish

  • Artikel/kapitelEngelska2021

Förlag, utgivningsår, omfång ...

  • 2021-03-19
  • BioMed Central (BMC),2021
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-441099
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-441099URI
  • https://doi.org/10.1186/s12915-021-00991-9DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

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Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Background: Eukaryote genomes frequently harbor supernumerary B chromosomes in addition to the "standard" A chromosome set. B chromosomes are thought to arise as byproducts of genome rearrangements and have mostly been considered intraspecific oddities. However, their evolutionary transcendence beyond species level has remained untested.Results: Here we reveal that the large metacentric B chromosomes reported in several fish species of the genus Astyanax arose in a common ancestor at least 4 million years ago. We generated transcriptomes of A. scabripinnis and A. paranae 0B and 1B individuals and used these assemblies as a reference for mapping all gDNA and RNA libraries to quantify coverage differences between B-lacking and B-carrying genomes. We show that the B chromosomes of A. scabripinnis and A. paranae share 19 protein-coding genes, of which 14 and 11 were also present in the B chromosomes of A. bockmanni and A. fasciatus, respectively. Our search for B-specific single-nucleotide polymorphisms (SNPs) identified the presence of B-derived transcripts in B-carrying ovaries, 80% of which belonged to nobox, a gene involved in oogenesis regulation. Importantly, the B chromosome nobox paralog is expressed >30x more than the A chromosome paralog. This indicates that the normal regulation of this gene is altered in B-carrying females, which could potentially facilitate B inheritance at higher rates than Mendelian law prediction.Conclusions: Taken together, our results demonstrate the long-term survival of B chromosomes despite their lack of regular pairing and segregation during meiosis and that they can endure episodes of population divergence leading to species formation.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Ruiz-Ruano, Francisco J.Uppsala universitet,Systematisk biologi,Univ Granada, Dept Genet, Granada 18071, Spain.;Univ East Anglia, Sch Biol Sci, Norwich Res Pk, Norwich NR4 7TU, Norfolk, England.(Swepub:uu)fraru543 (författare)
  • Utsunomia, RicardoUniv Fed Rural Rio de Janeiro, Dept Genet, Inst Ciencias Biol & Saude, BR-23897000 Seropedica, RJ, Brazil.;Univ Estadual Paulista, Dept Ciencias Biol, Fac Ciencias, UNESP, Campus Bauru, BR-17033360 Bauru, SP, Brazil. (författare)
  • Martin-Pecina, MariaUniv Granada, Dept Genet, Granada 18071, Spain. (författare)
  • Pena Castro, JonathanUniv Fed Sao Carlos, Dept Genet & Evolucao, UFSCAR, BR-13565905 Sao Carlos, SP, Brazil.;Univ Estadual Ponta Grossa, Dept Biol Estrutural Mol & Genet, BR-84030900 Ponta Grossa, PR, Brazil. (författare)
  • Paccielli Freire, PaulaUniv Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil.;Univ Sao Paulo, Dept Imunol, Inst Ciencias Biomed, BR-05508900 Sao Paulo, SP, Brazil. (författare)
  • Francisco Carvalho, RobsonUniv Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil. (författare)
  • Hashimoto, Diogo T.Univ Estadual Paulista, Ctr Aquicultura, UNESP, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil. (författare)
  • Suh, AlexanderUppsala universitet,Systematisk biologi,Univ East Anglia, Sch Biol Sci, Norwich Res Pk, Norwich NR4 7TU, Norfolk, England.(Swepub:uu)alesu519 (författare)
  • Oliveira, ClaudioUniv Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil. (författare)
  • Porto-Foresti, FabioUniv Estadual Paulista, Dept Ciencias Biol, Fac Ciencias, UNESP, Campus Bauru, BR-17033360 Bauru, SP, Brazil. (författare)
  • Ferreira Artoni, RobertoUniv Fed Sao Carlos, Dept Genet & Evolucao, UFSCAR, BR-13565905 Sao Carlos, SP, Brazil.;Univ Estadual Ponta Grossa, Dept Biol Estrutural Mol & Genet, BR-84030900 Ponta Grossa, PR, Brazil. (författare)
  • Foresti, FaustoUniv Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil. (författare)
  • Camacho, Juan Pedro M.Univ Granada, Dept Genet, Granada 18071, Spain. (författare)
  • Univ Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil.Systematisk biologi (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:BMC Biology: BioMed Central (BMC)191741-7007

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