Convergent recombination cessation between mating-type genes and centromeres in selfing anther-smut fungi.

ABSTRACT: The degree of selfing has major impacts on adaptability and is often controlled by molecular mechanisms determining mating compatibility. Changes in compatibility systems are therefore important evolutionary events, but their underlying genomic mechanisms are often poorly understood. Fungi display frequent shifts in compatibility systems, and their small genomes facilitate elucidation of the mechanisms involved. In particular, linkage between the pre- and postmating compatibility loci has evolved repeatedly, increasing the odds of gamete compatibility under selfing. Here, we studied the mating-type chromosomes of two anther-smut fungi with unlinked mating-type loci despite a self-fertilization mating system. Segregation analyses and comparisons of high-quality genome assemblies revealed th

SUBMITTER: Carpentier F 

PROVIDER: S-EPMC6581054 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature