School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China.
Int J Syst Evol Microbiol. 2017 May;67(5):1600-1606. doi: 10.1099/ijsem.0.001795. Epub 2017 May 30.
Eleven yeast strains representing four novel species of the genus Starmerella were isolated from scarabs beetles collected in Nanyang, Henan Province, Central China. Phylogenetic analysis using combined sequences of the D1/D2 domains of the large subunit (LSU) rRNA gene and the internal transcribed spacer (ITS) regions placed all the novel species in a clade distinct from the other known species in the clade representing the members of the genus Starmerella. These novel species differed from each other or their closest known species by more than 4.9 % nucleotide substitutions in the D1/D2 domains and by more than 9.1 % nucleotide substitutions in the ITS regions. The four novel species can also be separated from their closest relatives in terms of physiological characteristics. No asci or signs of conjugation were found in the novel species on the most common sporulation media. The novel species are designated as Starmerella anomalae f.a., sp. nov. (type strain NYNU 157145T=CICC 33094T=CBS 14178T), Starmerella asiatica f.a., sp. nov. (type strain NYNU 15782T=CICC 33089T=CBS 14173T), Starmerella henanensis f.a., sp. nov. (type strain NYNU 15766T=CICC 33088T=CBS 14172T) and Starmerella scarabaei f.a., sp. nov. (type strain NYNU 15821T=CICC 33090T=CBS 14174T).
从中国中部河南省南阳市采集的金龟子甲虫中分离到了 11 株代表四个新型星美酵母属的酵母菌株。使用大亚基(LSU)rRNA 基因的 D1/D2 结构域和内部转录间隔区(ITS)区域的组合序列进行的系统发育分析将所有新型种置于与代表星美酵母属成员的分支中的其他已知种不同的分支中。这些新型种在 D1/D2 结构域中彼此之间或与其最接近的已知种之间的核苷酸取代超过 4.9%,在 ITS 区域中核苷酸取代超过 9.1%。从生理特征方面来看,这四个新型种也可以与它们最接近的亲缘种区分开来。在最常见的孢子形成培养基上,新型种中未发现子囊或接合的迹象。这些新型种被指定为 Starmerella anomalae f.a.,sp. nov.(模式株 NYNU 157145T=CICC 33094T=CBS 14178T)、Starmerella asiatica f.a.,sp. nov.(模式株 NYNU 15782T=CICC 33089T=CBS 14173T)、Starmerella henanensis f.a.,sp. nov.(模式株 NYNU 15766T=CICC 33088T=CBS 14172T)和 Starmerella scarabaei f.a.,sp. nov.(模式株 NYNU 15821T=CICC 33090T=CBS 14174T)。