Data/hora: 01/06/2024 06:40:51

Provedor de dados: | 5
País: | France
Título: | Evidence for a genetic sex determination in Cnidaria, the Mediterranean red coral (Coralliumrubrum)
Autores: | Pratlong, M.; Haguenauer, A.; Chenesseau, S.; Brener, K.; Mitta, Guillaume; Toulza, E.; Bonabaud, M.; Rialle, S.; Aurelle, D.; Pontarotti, P.
Data: | 2017-03
Ano: | 2017
Palavras-chave: | Genetic sex determination; Corallium rubrum; RAD-sequencing; Cnidaria.
Resumo: | dSexual reproduction is widespread among eukaryotes, and the sex-determining processes vary greatly among species. While genetic sex determination (GSD) has been intensively described in bilaterian species, no example has yet been recorded among non-bilaterians. However, the quasi-ubiquitous repartition of GSD among multicellular species suggests that similar evolutionary forces can promote this system, and that these forces could occur also in non-bilaterians. Studying sex determination across the range of Metazoan diversity is indeed important to understand better the evolution of this mechanism and its lability. We tested the existence of sexlinked genes in the gonochoric red coral (Corallium rubrum, Cnidaria) using restriction site-associated DNA sequencing. We analysed 27 461 single nucleotide polymorphisms (SNPs) in 354 individuals from 12 populations including 53 that were morphologically sexed. We found a strong association between the allele frequencies of 472 SNPs and the sex of individuals, suggesting an XX/XY sex-determination system. This result was confirmed by the identification of 435 male-specific loci. An independent test confirmed that the amplification of these loci enabled us to identify males with absolute certainty. This is the first demonstration of a GSD system among non-bilaterian species and a new example of its convergence in multicellular eukaryotes.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00382/49367/49769.pdf

DOI:10.1098/rsos.160880

http://archimer.ifremer.fr/doc/00382/49367/

Editor: | Royal Soc
Formato: | application/pdf
Fonte: | Royal Society Open Science (2054-5703) (Royal Soc), 2017-03 , Vol. 4 , N. 3 , P. 160880 (1-9)

Fonte:

2017 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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