The FGI and the Broad Institute have released the 7X genome assembly of Puccinia graminis f. sp tritici in roughly 4500 contigs. This represents the first rust fungus to be sequenced and the second Urediniomycete that has been sequenced, Sporobolomyces roseus being the first. This rust fungus is “the causal agent of stem rust, has caused serious disease of small cereal grains (wheat, barley, oat, and rye) worldwide.”
Sally Otto and colleagues have identified that populations of laboratory yeast strains convereged on diploidy in this study. This is nicely consistent with the observation that most wild strains isolated from the environment are diploid.
For example Robert Mortimer describes some properties of wild wine strains and most are found to be diploid.