Polyphasic re-examination of Debaryomyces hansenii strains and reinstatement of D. hansenii, D. fabryi and D. subglobosus.

The type species of the genus Debaryomyces, Debaryomyces hansenii, is a highly heterogeneous species. It has been isolated from a large diversity of natural sources including fruit, air, water, soil, but most frequently from processed food products. The species delineation of this yeast species urgently needs clarification.

Candida nivariensis isolated from an Indonesian human immunodeficiency virus-infected patient suffering from oropharyngeal candidiasis.

Candida nivariensis was isolated from an Indonesian human immunodeficiency virus-infected patient who suffered from oropharyngeal candidiasis and was identified with molecular tools. Our isolate demonstrated low MICs to amphotericin B, flucytosine, posaconazole, caspofungin, and isavuconazole and was susceptible to fluconazole, itraconazole, and voriconazole.

Polyphasic re-examination of Yarrowia lipolytica strains and the description of three novel Candida species: Candida oslonensis sp. nov., Candida alimentaria sp. nov. and Candida hollandica sp. nov.

The type strain of Yarrowia lipolytica and 38 strains identified as Yarrowia lipolytica, four strains of Candida deformans, including the type and two subcultures of the type, two strains of Candida galli and six unidentified strains that resembled Y. lipolytica were examined by PCR fingerprints using primers M13 and (GAC)5. The same strains, together with four strains of the recently introduced Candida yakushimensis nom.

Taxonomy and phylogeny of the ascomycetous yeast genus Zygoascus, with proposal of Zygoascus meyerae sp. nov. and related anamorphic varieties.

Physiological characters, mating compatibility, PCR-RAPD fingerprints, mol% G + C content, DNA-DNA relatedness, and large-subunit and internal transcribed spacer rRNA gene sequences of strains assigned to the genus Zygoascus were re-examined. On the basis of those data, and after phylogenetic analyses, an emendation of Zygoascus hellenicus (type material is a cross of CBS 6736(T) x CBS 5839(T)) is proposed, comprising two novel anamorphic varieties, Candida steatolytica var. steatolytica (CBS 6736(T)) and C.

Botryozyma mucatilis sp. nov., an anamorphic ascomycetous yeast associated with nematodes in poplar slime flux.

A new species of Botryozyma, Botryozyma mucatilis, was isolated from the surface of free-living nematodes, Panagrellus dubius, inhabiting slime flux from hybrid poplars, Populus deltoidesxtrichocarpa, in Oregon, USA. This species was discovered in relatively close proximity to the teleomorphic species Ascobotryozyma americana and Ascobotryozyma cognata, both collected from P. dubius nematodes inhabiting beetle galleries in Populus spp.