Molecular evidence for recent divergence of X- and Y-linked gene pairs in Spinacia oleracea L.

ABSTRACT: Dioecy has evolved recently and independently from cosexual populations in many angiosperm lineages, providing opportunities to understand the evolutionary process underlying this transition. Spinach (Spinacia oleracea) is a dioecious plant with homomorphic sex chromosomes (XY). Although most of the spinach Y chromosome recombines with the X chromosome, a region around the male-determining locus on Y does not recombine with its X counterpart, suggesting that this region might be related to the evolution of dioecy in the species. To identify genes located in the non-recombining region (MSY, male-specific region of Y), RNA-seq analysis of male and female progeny plants (eight each) from a sib-cross of a dioecious line was performed. We discovered only 354 sex-chromosomal SNPs in 219 transcri

SUBMITTER: Okazaki Y 

PROVIDER: S-EPMC6456208 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature