Cherif E., Zehdi-Azouzi S., Crabos Amandine, Castillo K., Chabrillange Nathalie, Pintaud Jean-Christophe, Salhi-Hannachi A., Glemin S., Aberlenc Bertossi Frédérique. (2016). Evolution of sex chromosomes prior to speciation in the dioecious Phoenix species. Journal of Evolutionary Biology, 29 (8), p. 1513-1522. ISSN 1010-061X.
Titre du document
Evolution of sex chromosomes prior to speciation in the dioecious Phoenix species
Cherif E., Zehdi-Azouzi S., Crabos Amandine, Castillo K., Chabrillange Nathalie, Pintaud Jean-Christophe, Salhi-Hannachi A., Glemin S., Aberlenc Bertossi Frédérique
Source
Journal of Evolutionary Biology, 2016,
29 (8), p. 1513-1522 ISSN 1010-061X
Understanding the driving forces and molecular processes underlying dioecy and sex chromosome evolution, leading from hermaphroditism to the occurrence of male and female individuals, is of considerable interest in fundamental and applied research. The genus Phoenix, belonging to the Arecaceae family, consists uniquely of dioecious species. Phylogenetic data suggest that the genus Phoenix has diverged from a hermaphroditic ancestor which is also shared with its closest relatives. We have investigated the cessation of recombination in the sex-determination region within the genus Phoenix as a whole by extending the analysis of P.dactylifera SSR sex-related loci to eight other species within the genus. Phylogenetic analysis of a date palm sex-linked PdMYB1 gene in these species has revealed that sex-linked alleles have not clustered in a species-dependent way but rather in X and Y-allele clusters. Our data show that sex chromosomes evolved from a common autosomal origin before the diversification of the extant dioecious species.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Sciences du monde végétal [076]
