Hu Shuang, Jindamorakot Sasitorn, Zhu Qi-Yang, Guo Liang-Chen, Am-In Somjit, Sawaengkaew Jutaporn, Tigu Fitsum, Han Pei-Jie, Bai Feng-Yan
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.
College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, PR China.
Int J Syst Evol Microbiol. 2025 May;75(5). doi: 10.1099/ijsem.0.006789.
A yeast strain isolated from chestnut tree bark collected in Guangshan County, Xinyang, Henan Province, China and a strain isolated from soil collected in Phu Wiang District, Khon Khen Province, Thailand possess identical sequences in the 26S ribosomal RNA gene D1/D2 domain and the internal transcribed spacer (ITS) region. Phylogenetic analysis showed that the two strains belong to the genus and are closely related to but differed from the species by 7 (1.26%, 7 substitutions and 0 gap) and 43 (5.75 %, 31 substitutions and 12 gaps) mismatches in the D1/D2 domain and ITS region, respectively. The result suggests that the Chinese and the Thai strains represent a novel species in the genus , for which the name sp. nov. (holotype strain CGMCC 2.7783) is proposed. This species forms one or two spherical ascospores in persistent asci, usually with tapered protuberances.
从中国河南省信阳市光山县采集的栗树皮中分离出的一株酵母菌株，与从泰国孔敬府普威昂区采集的土壤中分离出的一株菌株，在26S核糖体RNA基因D1/D2结构域和内部转录间隔区（ITS）区域具有相同的序列。系统发育分析表明，这两株菌株属于该属，与该属密切相关，但在D1/D2结构域和ITS区域分别与该物种存在7个（1.26%，7处替换和0个空位）和43个（5.75%，31处替换和12个空位）错配。结果表明，中国和泰国的菌株代表了该属中的一个新物种，为此提出了新名称sp. nov.（模式菌株CGMCC 2.7783）。该物种在持久的子囊中形成一个或两个球形子囊孢子，通常带有锥形突起。
