%0 Journal Article
%A Pratlong, M.
%A Haguenauer, A.
%A Chenesseau, S.
%A Brener, K.
%A Mitta, G.
%A Toulza, E.
%A Bonabaud, M.
%A Rialle, S.
%A Aurelle, D.
%A Pontarotti, P.
%D 2017
%T Supplementary methods (libraries preparation and analysis of RAD-Sequencing and real-time PCR protocol) from Evidence for a genetic sex determination in Cnidaria, the Mediterranean red coral (Corallium rubrum)
%U https://rs.figshare.com/articles/journal_contribution/Supplementary_methods_libraries_preparation_and_analysis_of_RAD-Sequencing_and_real-time_PCR_protocol_from_Evidence_for_a_genetic_sex_determination_in_Cnidaria_the_Mediterranean_red_coral_i_Corallium_rubrum_i_/4676104
%R 10.6084/m9.figshare.4676104.v1
%2 https://rs.figshare.com/ndownloader/files/7629652
%K genetic sex determination
%K Corallium rubrum
%K RAD-sequencing
%K Cnidaria
%X Sexual 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 sex-linked genes in the gonochoric red coral (Corallium rubrum, Cnidaria) using Restriction site-Associated DNA sequencing (RAD-Seq). 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.
%I The Royal Society