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Candida pruni sp nov is a new yeast species with antagonistic potential against brown rot of peaches

文献类型： 外文期刊

作者： Zhang, Dian-peng 1 ; Lu, Cai-ge 1 ; Zhang, Tao-tao 1 ; Spadaro, Davide 2 ; Liu, De-wen 1 ; Liu, Wei-cheng 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China

2.Univ Torino, DiSAFA Dept Agr Forestry & Food Sci, I-10095 Grugliasco, TO, Italy

关键词： Candida pruni;Brown rot;Monilinia fructicola;Biological control

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

ISSN： 0302-8933

年卷期： 2014 年 196 卷 7 期

页码：

收录情况： SCI

摘要： Brown rot caused by Monilinia spp. is among the most important postharvest diseases of commercially grown stone fruits, and application of antagonistic yeasts to control brown rot is one promising strategy alternative to chemical fungicides. In this research, new yeast strains were isolated and tested for their activity against peach brown rot caused by Monilinia fructicola. Three yeast strains were originally isolated from the surface of plums (cv Chinese Angelino) collected in the north of China. In artificially wounded inoculation tests, the yeast reduced the brown rot incidence to 20 %. The population of the yeast within inoculated wounds on peaches significantly increased at 25 A degrees C from an initial level of 5.0 x 10(6) to 4.45 x 10(7) CFU per wound after 1 day. The antagonistic strains were belonging to a new species of the genus Candida by sequence comparisons of 26 S rDNA D1/D2 domain and internal transcribed spacer region. The strains are most closely related to C. asparagi, C. musae and C. fructus on the basis of the phylogenetic trees based on the D1/D2 region of 26S rDNA. However, the strains are notably different from C. asparagi, C. musae and C. fructus, in morphological and physiological characteristics. Therefore, the name Candida pruni is proposed for the novel species, with sp-Quan (=CBS12814(T) = KCTC 27526(T) = GCMC 6582(T)) as the type strain. Our study showed that Candida pruni is a novel yeast species with potential biocontrol against brown rot caused by M. fructicola on peaches.

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