Metschnikowia persici sp. nov., A Novel Protease-Producing Yeast Species from China.
Three yeast strains, named as FHL-A, FHL-B, and FHL-C, were isolated from peach fruit surfaces collected from different regions in the North of China highly produced protease and were presented as single separate group in the genus Metschnikowia 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 the three strains to all sequences of other yeasts accessed into the GenBank/EMBL/DDBJ and other database was very low (≦93%). The phylogenetic tree based on the D1/D2 region of 26S rRNA gene sequences revealed that three strains are most closely related to Metschnikowia koreensis KCTC 7828T (AF257272.1) (sequence similarity: 93.0%) and Metschnikowia reukaufii CBS9709T(AJ716113.1) (sequence similarity: 93.0%). However, the strains are distinguished from M. koreensis by its non-assimilation of galactose, ribitol, and D-xylose, and by its growth at 37 °C or in vitamin-free medium, and are notably different from M. reukaufii by its non-assimilation of galactose, D-xylose, D-arabinose, and D-ribose, and by its growth at 35 °C or in vitamin-free medium. The strain FHL-B formed asci in V8 juice sporulation medium for 3 weeks. Therefore, the name Metschnikowia persici is proposed for the novel species, with FHL-B (= CBS12815T= CFCC 3578T) as the type strain.
College of Food Science and Technology, Shi He Zi University, Xinjiang, 832003, China.|Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
Chen
C
Wang
Beijing Tongzhou Agricultural Extension Station, Beijing, 101100, China.
Yang
Y
Liu
Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
Tao-Tao
TT
Zhang
Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
Cai-Ge
CG
Lu
College of Food Science and Technology, Shi He Zi University, Xinjiang, 832003, China.
Ya
Y
Liu
Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China. dreamstar26@126.com.
Dian-Peng
DP
Zhang
Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China. liuwich@163.com.
Wei-Cheng
WC
Liu
D001089:Arabinose / Q000378:metabolism; D002681:China; D004271:DNA, Fungal / Q000235:genetics; D010450:Endopeptidases / Q000235:genetics / Q000378:metabolism*; D005690:Galactose / Q000378:metabolism; D055163:Metschnikowia / Q000201:enzymology* / Q000235:genetics / Q000378:metabolism*; D000068239:Prunus persica / Q000382:microbiology*; D012335:RNA, Ribosomal / Q000235:genetics; D012255:Ribitol / Q000378:metabolism; D012266:Ribose / Q000378:metabolism; D014994:Xylose / Q000378:metabolism
D004271:DNA, Fungal; D012335:RNA, Ribosomal; C065096:RNA, ribosomal, 26S; D012255:Ribitol; D012266:Ribose; D014994:Xylose; D001089:Arabinose; D010450:Endopeptidases; D005690:Galactose
China; Metschnikowia persici sp. nov.; Peaches; Protease