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

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

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

Ruiz-Ruano, Francisco J. (författare): 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.

Utsunomia, Ricardo (författare): Univ 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.

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Martin-Pecina, Maria (författare): Univ Granada, Dept Genet, Granada 18071, Spain.

Pena Castro, Jonathan (författare): Univ 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.

Paccielli Freire, Paula (författare): Univ 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.

Francisco Carvalho, Robson (författare): Univ Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil.

Hashimoto, Diogo T. (författare): Univ Estadual Paulista, Ctr Aquicultura, UNESP, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil.

Suh, Alexander (författare): Uppsala universitet,Systematisk biologi,Univ East Anglia, Sch Biol Sci, Norwich Res Pk, Norwich NR4 7TU, Norfolk, England.

Oliveira, Claudio (författare): Univ Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil.

Porto-Foresti, Fabio (författare): Univ Estadual Paulista, Dept Ciencias Biol, Fac Ciencias, UNESP, Campus Bauru, BR-17033360 Bauru, SP, Brazil.

Ferreira Artoni, Roberto (författare): Univ 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.

Foresti, Fausto (författare): Univ Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil.

Camacho, Juan Pedro M. (författare): Univ Granada, Dept Genet, Granada 18071, Spain.

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Univ Estadual Paulista, Dept Biol Estrutural & Func, Inst Biociencias Botucatu, UNESP, BR-18618970 Botucatu, SP, Brazil Systematisk biologi (creator_code:org_t)

2021-03-19
2021
Engelska.
Ingår i: BMC Biology. - : BioMed Central (BMC). - 1741-7007. ; 19

Relaterad länk:: https://doi.org/10.1...; visa fler...; https://uu.diva-port... (primary) (Raw object); https://bmcbiol.biom...; https://urn.kb.se/re...; https://doi.org/10.1...; visa färre...

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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.

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Av författaren/redakt...: Zerbinato de And ...; Ruiz-Ruano, Fran ...; Utsunomia, Ricar ...; Martin-Pecina, M ...; Pena Castro, Jon ...; Paccielli Freire ...; visa fler...; Francisco Carval ...; Hashimoto, Diogo ...; Suh, Alexander; Oliveira, Claudi ...; Porto-Foresti, F ...; Ferreira Artoni, ...; Foresti, Fausto; Camacho, Juan Pe ...; visa färre...

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

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