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Arch Microbiol. 2017 Mar;199(2):377-383. doi: 10.1007/s00203-016-1294-5. Epub 2016 Oct 14.

Candida xinjiangensis sp. nov., a new anamorphic yeast species isolated from Scolytus scheryrewi Semenov in China.

Author information

1
Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100094, China.
2
Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China.
3
Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
4
Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China. yangsenxj@126.com.
5
Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100094, China. zhangqingwen@263.net.

Abstract

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 (≦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 °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 (=KCTCT27747) as the type strain.

KEYWORDS:

Apricot tree; Candida xinjiangensis sp. nov.; China; Scolytus scheryrewi

PMID:
27743015
DOI:
10.1007/s00203-016-1294-5
[Indexed for MEDLINE]

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