- Volume 51, Issue 3, 2001

A yeast, strain NCYC 2938T, was isolated from contaminated industrial material. This material was involved in a cascade continuous process for oxidizing sorbitol (D-glucitol) to L-sorbose. The isolate is similar, although not identical, to Candida geochares and Candida magnoliae in its physiological characteristics. Sequence analysis of the 26S rDNA D1/D2 variable domain showed that it was similar to those of both Candida species, but differed sufficiently to be considered as a separate species. Both the physiological characteristics and the unique 26S rDNA D1/D2 sequence of NCYC 2938T are described here, and the yeast has been named Candida sorbosivorans sp. nov. The type strain is NCYC 2938T (= CBS 8768T).

Cryptococcus humicola, as currently defined, shows intraspecific rRNA gene sequence differences. Three strains of this species produced arthroconidia on cornmeal agar and belonged to the genus Trichosporon in a molecular phylogeny. They clustered with the species possessing Q10 as the major ubiquinone and were serotype I. Sequence analyses clearly revealed that they were two new Trichosporon species. The names Trichosporon dermatis sp. nov. (= CBS 2043T) and Trichosporon debeurmannianum sp. nov. (= CBS 1896T) are proposed for these strains.