Fig. 6: Trans-specific polymorphism (TP) of genes present along the mating-type chromosomes in Microbotryum superbum, considering also M. shykoffianum and M. lagerheimii.
From: Repeated loss of function at HD mating-type genes and of recombination in anther-smut fungi
A Schematic representation of trans-specific polymorphism in genes completely linked to mating-type loci by suppressed recombination, allowing to assess whether recombination cessation occurred before or after speciation, here between M. lagerheimii, M. superbum and M. shykoffianum. B Percentage of genes within each evolutionary stratum with the following genealogy pattern: full trans-specific polymorphism (i.e., across both M. superbum and M. shykoffianum), partial trans-specific polymorphism (i.e., with only one allele showing clustering by mating type and the other by species, or with one allele missing, i.e., not informative), and “others” which show no evidence of trans-specific polymorphism. The total number of genes analyzed per stratum is indicated at the left of each barplot. The PAR (pseudo-autosomal region) category corresponds here to the two PARs of the PR chromosome pooled together. Source data are provided as a Source Data file. Diseased plants photo credits: Dianthus pavonius and Dianthus carthusianorum by M. E. Hood. Other photos are from Duhamel et al.42.
