Efficacy assessment of Pantoea jilinensis D25 fermentation broth against Botrytis cinerea
文献类型： 外文期刊
作者： Zheng, Lining 1 ; Zhang, Cheng 1 ; Wu, Xian 2 ; Liu, Ling 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： Pantoea jilinensis D25; Fermentation broth; Inhibit; Secondary metabolites; Botrytis cinerea
期刊名称：PROCESS BIOCHEMISTRY （ 影响因子：4.885； 五年影响因子：4.43 ）
ISSN： 1359-5113
年卷期： 2021 年 111 卷
页码：
收录情况： SCI
摘要： Tomato gray mold, caused by Botrytis cinerea, is one of the most devastating diseases affecting tomato plants. In this study, Pantoea jilinensis D25 fermentation broth (PJFB) was used to inhibit B. cinerea growth. The optimum fermentation time was 7 days. PJFB antifungal activity decreased when PJFB was heated to >= 60 degrees C, whereas it was the strongest at pH 8. Moreover, ultraviolet treatment for a long time reduced its antifungal effect. PJFB, applied at 10 % (v/v), could inhibit B. cinerea growth by inhibiting its mycelial diameter, conidial production, and mycelial dry weight with the inhibition rates of 57.3 %, 51.2 %, and 78.6 %, respectively. PJFB could also increase conductivity and malondialdehyde (MDA) content in B. cinerea. Furthermore, PJFB inhibited B. cinerea on not only the leaf tissues but also the seedlings of tomato. The secondary metabolites in PJFB were determined through gas chromatography-mass spectrometry. Through laboratory toxicity analysis, we found that the major compounds in PJFB were 1,2-benzenedicarboxylic acid bis(2-methylpropyl) ester (14.3098 %), 2,4-di-tert-butylphenol (3.8036 %), 2,6,10,14-tetramethyl pentadecane (2.9947 %), and 1,3-dimethyl naphthalene (1.8586 %).
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