Two yeasts strains, Y-31 and Y-20B, pertaining to a previously unknown yeast species were isolated from bark of cork oak in Spain. Physiological characterization revealed a pattern of assimilation of carbon and nitrogen compounds compatible with members of the genus . From sequence analysis of the D1/D2 region of the 26S rRNA gene, and were related to the unknown species. Phylogenetic reconstruction based on the D1/D2 region of the 26S rRNA gene showed that the novel species clustered in a branch together with . The name sp. nov. is proposed, with isolate Y-31 (=CECT 11976=CBS 10442) the type strain of this novel taxon in the lineage, subclass Microbotryomycetidae, class Urediniomycetes of basidiomycetous yeasts.


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