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A novel biocontrol strain Pantoea jilinensis D25 for effective biocontrol of tomato gray mold (causative agent Botrytis cinerea)

文献类型： 外文期刊

作者： Zheng, Lining 1 ; Zhang, Jinpeng 1 ; Wu, Xian 2 ; Gu, Xuehu 1 ; Wang, Shuanglong 1 ; Zhang, Hao 1 ;

作者机构： 1.Jilin Agr Univ, Coll Plant Protect, Changchun 130118, Peoples R China

2.Jilin Acad Agr Sci, Inst Plant Protect, Gongzhuling 136100, Peoples R China

关键词： Antagonism; Biological control; Bioprotection; Growth inhibition; Identification

期刊名称：BIOLOGICAL CONTROL （ 影响因子：3.687； 五年影响因子：3.962 ）

ISSN： 1049-9644

年卷期： 2021 年 164 卷

页码：

收录情况： SCI

摘要： Botrytis cinerea is the causative agent of a common and serious disease, gray mold of tomato, which can infect the flower, fruit, leaf, and stem tissues. The occurrence of gray mold account for dramatic decrease of tomato yield, threatening the food security, with rarely effective biocontrol approach. In this study, we isolated 56 bacterial strains from tomato rhizosphere, with 7 strains among which had great control effect against B. cinerea. Among the 7 identified strains, Pantoea jilinensis D25 which had the strongest inhibitory effect, was a new strain. Further we found that P. jilinensis D25 can inhibit the mycelial growth and spore production of B. cinerea, with alterations of the mycelial morphology of B. cinerea. The highest growth inhibition (83.1%) of B. cinerea occurred upon the exposure to a concentration of 5.0x10(5) cfu/mL of P. jilinensis D25, at pH 6 and 25 degrees C. The inhibitory effect against B. cinerea by P. jilinensis D25 was further validated with inoculation assay on tomato leaf tissues and tomato seedlings. The results demonstrated that P. jilinensis D25 strain from soils of tomato growing areas is a new and effective biocontrol agent against notorious tomato gray mold disease.

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