title: Bullera anomala sp. nov. and Bullera pseudovariabilis sp. nov., two new ballistoconidium-forming yeast species from Yunnan, China.
abstract: Two ballistoconidium-forming yeast strains, CH 2.504 and CH 2.509, were isolated from the wilting leaves of Parthenocissus sp. collected in Yunnan, China in 1996. These two strains were assigned to the genus Bullera Derx by the characteristics of forming rotationally symmetric ballistoconidia, containing xylose in the cell hydrolysates and having Q-10 as the major ubiquinone. Molecular phylogenetic analysis based on small subunit ribosomal RNA gene (18S rDNA) and internal transcribed spacer (ITS) region sequences revealed that CH 2.504 is closely related to B. variabilis Nakase & Suzuki, while CH 2.509 is located in a clearly separate clade among the described Bullera species and related taxa. The results indicated that CH 2.509 represents a new species, for which Bullera anomala sp. nov. is the proposed name (type strain AS 2.2094T). Further DNA-DNA reassociation data showed that CH 2.504 also represents a distinct species, for which the name Bullera pseudovariabilis sp. nov. is given (type strain AS 2.2092T).
authors.affiliation: Systematic Mycology and Lichenology Laboratory, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, China. baify@sun.im.ac.cn
authors.forename: Feng-Yan
authors.initials: FY
authors.lastname: Bai
authors.forename: Masako
authors.initials: M
authors.lastname: Takashima
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: Zhao
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: Jia
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakase
mesh_terms: D001487:Basidiomycota / Q000145:classification* / Q000166:cytology / Q000235:genetics* / Q000378:metabolism; D002681:China; D004271:DNA, Fungal / Q000032:analysis / Q000235:genetics; D004275:DNA, Ribosomal / Q000032:analysis / Q000235:genetics; D008967:Molecular Biology; D016533:Mycological Typing Techniques; D010641:Phenotype; D010802:Phylogeny
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal