Strains belonging to two novel yeast species, and , were isolated from the bromeliad tank of (Bromeliaceae) in a sandy coastal plain (restinga) ecosystem site in an Atlantic rainforest of south-eastern Brazil. These species were genetically distinct from all other currently accepted ascomycetous yeasts, based on sequence divergence in the D1/D2 domains of the large-subunit rDNA and in the small-subunit rDNA. The species occupy basal positions in the Metschnikowiaceae clade. The type strains are UNESP 00-103 (=CBS 10002=NRRL Y-27811) and UNESP 01-247R (=CBS 10003=NRRL Y-27812).


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