Transitions to asexuality and evolution of gene expression in Artemia brine shrimp.

Autor: Huylmans AK; Institute of Science and Technology Austria, Am Campus 1, Klosterneuburg 3400, Austria., Macon A; Institute of Science and Technology Austria, Am Campus 1, Klosterneuburg 3400, Austria., Hontoria F; Instituto de Acuicultura de Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain., Vicoso B; Institute of Science and Technology Austria, Am Campus 1, Klosterneuburg 3400, Austria.
Jazyk: angličtina
Zdroj: Proceedings. Biological sciences [Proc Biol Sci] 2021 Sep 29; Vol. 288 (1959), pp. 20211720. Date of Electronic Publication: 2021 Sep 22.
DOI: 10.1098/rspb.2021.1720
Abstrakt: While sexual reproduction is widespread among many taxa, asexual lineages have repeatedly evolved from sexual ancestors. Despite extensive research on the evolution of sex, it is still unclear whether this switch represents a major transition requiring major molecular reorganization, and how convergent the changes involved are. In this study, we investigated the phylogenetic relationship and patterns of gene expression of sexual and asexual lineages of Eurasian Artemia brine shrimp, to assess how gene expression patterns are affected by the transition to asexuality. We find only a few genes that are consistently associated with the evolution of asexuality, suggesting that this shift may not require an extensive overhauling of the meiotic machinery. While genes with sex-biased expression have high rates of expression divergence within Eurasian Artemia , neither female- nor male-biased genes appear to show unusual evolutionary patterns after sexuality is lost, contrary to theoretical expectations.
Databáze: MEDLINE