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1 Department of Pathobiology, Nihon University School of Veterinary Medicine, Kameino, Fujisawa, Kanagawa 252-8510, Japan
2 Teikyo University Institute of Medical Mycology, Otsuka, Hachioji, Tokyo 192-0395, Japan
3 Department of Microbiology, Biological Science Institute, Federal University of Minas Gerais, Avenida Antonio Carlos, Belo Horizonte, Minas Gerais, 31270-901, Brazil
4 Department of Biology, University of Western Ontario, London, Ontario, Canada N6A 5B7
Correspondence
Rui Kano
kano{at}brs.nihon-u.ac.jp
Five isolates of a novel species of the yeast genus Malassezia were isolated from animals in Japan and Brazil. Phylogenetic trees based on the D1/D2 domains of the large-subunit (26S) rDNA sequences and nucleotide sequences of the internal transcribed spacer 1 region showed that the isolates were conspecific and belonged to the genus Malassezia. They were related closely to Malassezia dermatis and Malassezia sympodialis, but were clearly distinct from these two species and the other six species of Malassezia that have been reported, indicating that they should be classified as a novel species, Malassezia nana sp. nov. Morphologically and physiologically, M. nana resembles M. dermatis and M. sympodialis, but can be distinguished from these species by its inability to use Cremophor EL (Sigma) as the sole lipid source and to hydrolyse aesculin. The type strain of M. nana is NUSV 1003T (=CBS 9557T=JCM 12085T).
Published online ahead of print on 1 August 2003 as DOI 10.1099/ijs.0.02776-0.
The GenBank/EMBL/DDBJ accession numbers for the 26S rDNA sequences reported in this paper are AB075224, AB105860–AB105862 and AY166596, and the accession numbers for the ITS1 region sequences are AB075223 and AB105863.
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