Homologous sex chromosomes in three deeply divergent anuran species.

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State: Public
Version: Final published version
Serval ID
serval:BIB_820DA167C064
Type
Article: article from journal or magazin.
Collection
Publications
Title
Homologous sex chromosomes in three deeply divergent anuran species.
Journal
Evolution
Author(s)
Brelsford A., Stöck M., Betto-Colliard C., Dubey S., Dufresnes C., Jourdan-Pineau H., Rodrigues N., Savary R., Sermier R., Perrin N.
ISSN
1558-5646 (Electronic)
ISSN-L
0014-3820
Publication state
Published
Issued date
2013
Peer-reviewed
Oui
Volume
67
Number
8
Pages
2434-2440
Language
english
Abstract
Comparative genomic studies are revealing that, in sharp contrast with the strong stability found in birds and mammals, sex determination mechanisms are surprisingly labile in cold-blooded vertebrates, with frequent transitions between different pairs of sex chromosomes. It was recently suggested that, in context of this high turnover, some chromosome pairs might be more likely than others to be co-opted as sex chromosomes. Empirical support, however, is still very limited. Here we show that sex-linked markers from three highly divergent groups of anurans map to Xenopus tropicalis scaffold 1, a large part of which is homologous to the avian sex chromosome. Accordingly, the bird sex determination gene DMRT1, known to play a key role in sex differentiation across many animal lineages, is sex linked in all three groups. Our data provide strong support for the idea that some chromosome pairs are more likely than others to be co-opted as sex chromosomes because they harbor key genes from the sex determination pathway.
Keywords
Amphibian, Bufo siculus, convergent evolution, conserved synteny, DMR, Hyla arborea, Rana temporaria, sex chromosome turnover
Pubmed
Web of science
Open Access
Yes
Create date
16/04/2013 6:31
Last modification date
20/08/2019 14:42
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