Liao You-Jun, Zhang Xuan, Liu Zi-Xuan, Wang Rui, Yu Ya-Jing, Xue Lu, Li Ai-Hua
School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin, PR China.
China General Microbiological Culture Collection Center (CGMCC), Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.
Int J Syst Evol Microbiol. 2025 Jun;75(6). doi: 10.1099/ijsem.0.006830.
Two basidiomycete yeast strains, designated as 21S12 and 12S11, were isolated from the flowers of collected from the Beijing Olympic Forest Park, PR China. Molecular phylogenetic analyses based on the D1/D2 domains of the large subunit rRNA gene and the internal transcribed spacer (ITS) region revealed that these strains represent a novel species within the genus . The new species, sp. nov., is most closely related to CBS 10308, with sequence divergences of 4.3% (28 substitutions and 2 indels) in the D1/D2 domain and 8.4% (28 substitutions and 10 indels) in the ITS region. Phenotypically, sp. nov. differs from CBS 10308 in its ability to assimilate inulin and creatinine, as well as its inability to assimilate lactose and erythritol. Additionally, sp. nov. can grow in a vitamin-free medium and in a medium supplemented with 50% glucose, conditions under which cannot grow. The holotype of sp. nov. is CGMCC2.5852, and its taxonomic description has been registered in Fungal Names (FN572294) and in Mycobank (MBT10026390).
从中国北京奥林匹克森林公园采集的花朵中分离出两株担子菌酵母菌株，分别命名为21S12和12S11。基于大亚基rRNA基因的D1/D2结构域和内部转录间隔区（ITS）区域的分子系统发育分析表明，这些菌株代表了该属内的一个新物种。这个新物种，即[新物种名称]，与[对比物种名称]CBS 10308关系最为密切，在D1/D2结构域中的序列差异为4.3%（28个替换和2个插入/缺失），在ITS区域中的序列差异为8.4%（28个替换和10个插入/缺失）。在表型上，[新物种名称]与[对比物种名称]CBS 10308的不同之处在于其同化菊粉和肌酐的能力，以及不能同化乳糖和赤藓糖醇的能力。此外，[新物种名称]可以在无维生素培养基和添加50%葡萄糖的培养基中生长，而[对比物种名称]在这些条件下无法生长。[新物种名称]的模式菌株为CGMCC2.5852，其分类描述已在《真菌名称》（FN572294）和《真菌菌种保藏中心》（MBT10026390）中登记。
