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Metschnikowia citriensis sp. nov., a novel yeast species isolated from leaves with potential for biocontrol of postharvest fruit rot.

Liu Ye ; Yao ShiXiang ; Deng LiLi ; Ming Jian ; Zeng KaiFang

Biological Control 2018 Vol 125 pp. 15-19;

Abstract

Two strains representing a yeast species of Metschnikowia were isolated from the surface of citrus leaves collected in Chongqing Province, China. Preliminary tests showed that this species has a biocontrol potential for inhibiting citrus green mold. This yeast species is most closely related to Metschnikowia koreensis based on the phylogenetic tree derived from neighbour-joining analysis of 26S rRNA gene D1/D2 domain. However, M. koreensis differs from this species by seven (1.5%) substitutions in the 26S rRNA gene D1/D2 domain and by >100 (>25%) mismatches in the internal transcribed spacer (ITS) region. The name Metschnikowia citriensis sp. nov. (type strain FL01T=CICC 33213T=KCTC 27796T, strain FL02=CICC 33214) is proposed for the novel species because of morphological, physiological and biochemical characteristics and the sequence comparisons of the 26S rRNA gene D1/D2 domain and ITS region.