f.a.，新物种，一种从腐烂木材中分离出的新型具尖酵母物种。

f.a., sp. nov., a novel apiculate yeast species isolated from rotting wood.

作者信息

Chen Xue, Qiao Ya-Zhuo, Hui Feng-Li

机构信息

School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China.

出版信息

Int J Syst Evol Microbiol. 2023 Jul;73(7). doi: 10.1099/ijsem.0.005970.

DOI:10.1099/ijsem.0.005970

PMID:37486335

Abstract

Two apiculate strains (NYNU 181072 and NYNU 181083) of a bipolar budding yeast species were isolated from rotting wood samples collected in Xishuangbanna Tropical Rainforest in Yunnan Province, southwest PR China. On the basis of phenotypic characteristics and the results of phylogenetic analysis of the D1/D2 domain of the large subunit (LSU) rRNA, internal transcribed spacer (ITS) region and the actin () gene, the two strains were found to represent a single novel species of the genus , for which the name f.a., sp. nov. (holotype CICC 33364; MycoBank MB 847437) is proposed. In the phylogenetic tree, sp. nov. showed a close relationship with , , and . sp. nov. differed from , the most closely related known species, by 1.2 % substitutions in the D1/D2 domain, 2.5 % substitutions in the ITS region and 5.4 % substitutions in the gene, respectively. Physiologically, sp. nov. can also be distinguished from by its ability to assimilate d-gluconate.

摘要

从中国西南部云南省西双版纳热带雨林采集的腐烂木材样本中分离出两株具尖的双极出芽酵母菌株（NYNU 181072和NYNU 181083）。基于表型特征以及大亚基（LSU）rRNA的D1/D2结构域、内转录间隔区（ITS）区域和肌动蛋白（）基因的系统发育分析结果，发现这两株菌株代表了属的一个新物种，为此提出名称为f.a., sp. nov.（模式菌株CICC 33364；国际真菌名称索引数据库MB 847437）。在系统发育树中，sp. nov.与、、和显示出密切的关系。sp. nov.与最密切相关的已知物种在D1/D2结构域中的替换率为1.2%，在ITS区域中的替换率为2.5%，在基因中的替换率为5.4%。在生理方面，sp. nov.也可通过其同化d-葡萄糖酸盐的能力与区分开来。