文献类型： 外文期刊

作者： Zhu, Xiao-feng ¹ ; Zhang, Dian-peng ³ ; Yang, Sen ² ; Zhang, Qing-wen ¹ ;

作者机构： 1.China Agr Univ, Dept Entomol, Coll Plant Protect, Beijing 100094, Peoples R China

2.Xinjiang Acad Agr Sci, Inst Plant Protect, Urumqi 830091, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China

关键词： Apricot tree;Candida xinjiangensis sp nov.;China;Scolytus scheryrewi

期刊名称：ARCHIVES OF MICROBIOLOGY （ 影响因子：2.552； 五年影响因子：2.475 ）

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收录情况： SCI

摘要： Three yeast strains designated as S44, XF1 and XF2, respectively, were isolated from Scolytus scheryrewi Semenov of apricot tree in Shule County, Xinjiang, China, and were demonstrated to be a new member of the genus Candida by sequence comparisons of 26S rRNA gene D1/D2 domain and internal transcribed spacer (ITS) region. BLASTn alignments on NCBI showed that the similarity of 26S rRNA gene sequences of S44 (type strain) to all sequences of other Candida yeasts was very low (ae broken vertical bar 93 %). The phylogenetic tree based on the 26S rRNA gene D1/D2 domain and ITS region sequences revealed that the strain S44 is closely related to C. blattae, C. dosseyi, C. pruni, C. asparagi, C. fructus and C. musae. However, the strain S44 is distinguished from these Candida species by the physiological characteristics. Moreover, the strain S44 formed typical pseudohyphae when grown on cornmeal agar at 25 A degrees C for 7 days, but did not form ascospores in sporulation medium for 3-4 weeks. Therefore, the name Candida xinjiangensis is proposed for the novel species, with S44 (=KCTC(T)27747) as the type strain.