Homologous sex chromosomes in three deeply divergent anuran species.

Détails

Ressource 1Télécharger: BIB_820DA167C064.P001.pdf (244.89 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_820DA167C064
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Homologous sex chromosomes in three deeply divergent anuran species.
Périodique
Evolution
Auteur(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
Statut éditorial
Publié
Date de publication
2013
Peer-reviewed
Oui
Volume
67
Numéro
8
Pages
2434-2440
Langue
anglais
Résumé
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.
Mots-clé
Amphibian, Bufo siculus, convergent evolution, conserved synteny, DMR, Hyla arborea, Rana temporaria, sex chromosome turnover
Pubmed
Web of science
Open Access
Oui
Création de la notice
16/04/2013 7:31
Dernière modification de la notice
08/05/2019 21:11
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