1887

Abstract

Two strains (S-34 and S-35) of a novel ascomycetous yeast species belonging to the genus were isolated from soil from a mixed deciduous forest in Amphoe Wang Nam Khiao, Nakhon Ratchasima Province, Thailand. The D1/D2 domains of the large-subunit rDNA sequences of the two strains were identical and also indicated a close relationship with respect to , , , and . The most closely related species, , has 14 nucleotide substitutions and three gaps in 566 nt. The phenotypic characteristics of the two strains were typical of those of members of the genus . These characteristics include the formation of a single globose ascospore in an unconjugated and persistent ascus, multilateral budding, the absence of arthrospores and ballistospores, the fermentation of glucose, the inability to assimilate nitrate, negative diazonium blue B and urease reactions, and the presence of ubiquinone Q-6. The novel strains can be distinguished from on the basis of a number of phenotypic characteristics and represent a novel species in the genus , for which the name sp. nov. is proposed. The type strain is S-34 (=CBS 10361=NBRC 101968=BCC 21230).

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2007-02-01
2019-10-14
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vol. , part 2, pp. 419 - 422

Phylogenetic tree based on SSU rDNA sequences showing the positions of the two novel strains, S-34 and S-35, with respect to closely related species. [PDF](13 KB)



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