1887

Abstract

During an investigation of the diversity of airborne yeasts in a famous Chinese baijiu fermentation workshop, two yeast strains were isolated from the air of the Wuliangye 501# baijiu-making workshop in Yibin, Sichuan Province, PR China and subjected to taxonomic analysis. The results of phylogenetic analysis of two regions of the rRNA gene cluster, the D1/D2 domains of the large subunit (LSU) rRNA gene and the internal transcribed spacer (ITS) region, indicated that these strains represented a novel species of the genus distinct from closely related species. The similarity between the novel species and the most closely related known species, , was 94.1 % for the D1/D2 LSU rRNA gene (30 substitutions and 12 indels out of 556 bp) and 95.6 % for the ITS region (9 substitutions and 6 indels out of 475 bp). In contrast with , this novel species was able to assimilate -ribose, -arabinose, -arabinose, cellobiose, -glucono-1,5-lactone, -lactate, citrate, 1,2-propanediol, 2,3-butanediol and ethanol but was unable to ferment raffinose or assimilate inulin. On the basis of the results of phylogenetic analysis and the physiological characteristics, these investigated strains represent a novel species of the genus , for which the name sp. nov. is proposed. Its holotype is CGMCC 20235, and the MycoBank number is MB840188.

Funding
This study was supported by the:
  • Yibin High-tech program (Award 2021GH001)
    • Principle Award Recipient: JiaZheng
  • Solid-state Fermentation Resource Utilization Key Laboratory of Sichuan Province (Award 2021GTJC02)
    • Principle Award Recipient: XuejunLei
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/content/journal/ijsem/10.1099/ijsem.0.005464
2022-07-20
2024-02-21
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