Evolution of sex-biased gene expression during transitions to separate sexes in the Silene genus - Archive ouverte HAL Access content directly
Preprints, Working Papers, ... (Preprint) Year : 2023

Evolution of sex-biased gene expression during transitions to separate sexes in the Silene genus

Djivan Prentout
  • Function : Author
Niklaus Zemp
  • Function : Author
Adil El Filali
Bastien Boussau
  • Function : Author
Pascal Touzet
  • Function : Author
Alex Widmer
  • Function : Author
Jos Käfer
  • Function : Author
Gabriel A.B. Marais

Abstract

Sexual dimorphism is widespread among species with separate sexes and its extent is thought to be governed by the differential expression of thousands of genes between males and females (known as Sex-Biased Genes, hereafter SBGs). SBGs have been studied in numerous species, but rarely in a comparative way, which curtails our understanding of their evolution, especially during multiple independent transitions to separate sexes. We sequenced the transcriptomes of nine dioecious species, two gynodioecious species (separate females and hermaphrodites) and two hermaphrodite species from the Silene genus. Our dataset provides access to three independent transitions to dioecy (dating from less than 1 Myo to about 11 Myo). We demonstrated that male-biased expression emerges first during a transition to separate sexes, later followed by female-biased genes. Furthermore, we showed that, despite a mixture of selective regimes, positive selection significantly affects the evolution of some SBGs. Overall, this study provides new insights on the causes of SBG evolution during transitions to separate sexes. Teaser This study describes the evolution of sex-biased gene expression during a transition to separate sexes in plants.

Dates and versions

hal-04293721 , version 1 (19-11-2023)

Identifiers

Cite

Djivan Prentout, Aline Muyle, Niklaus Zemp, Adil El Filali, Bastien Boussau, et al.. Evolution of sex-biased gene expression during transitions to separate sexes in the Silene genus. 2023. ⟨hal-04293721⟩
17 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More