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Inhibitory effects of one volatile organic compound emitted from Bacillus subtilis ZD01against potato early blight

Inhibitory effects of one volatile organic compound emitted ...

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中国植物病理学会2021年学术年会

作者： ZHANG Dai QIANG Ran ZHAO Jing CHENG Jianing FAN Yaning ZHAO Dongmei YANG Pan WANG Jinhui LI Qian YANG Zhihui ZHU Jiehua LIU Huajiao College of Plant Protection Hebei Agricultural University Agricultural Business Training and Entrepreneurship Center Hebei Agricultural University

Bacillus is one of the most studied and applicated biological control *** volatile organic compounds(VOCs) produced by Bacillus strains have recently been proved to have strong inhibiting activities against plant fungal ***,their mechanisms of action especially one specific VOC produced by Bacillus against plant fungal pathogens still remains poorly ***,little is known about the function of Alternaria solani pathogenic relative *** this study,6-methyl-2-heptanone accounted relatively high content in VOCs from *** ZD01 and inhibited *** mycelia growth significantly in vitro with its EC value against *** was 0.19 mg/cm *** and transmission electron microscopy analyses revealed distorted hephae and a wide range of abnormalities in *** cells when exposed to ***,there were some cells fluoresced green captured exposed to 6-methyl-2-heptanone and the extracellular ATP contents of *** increased dramatically in treated groups,which indicated that 6-methyl-2-heptanone increased membrane permeability of *** *** qRT-PCR results showed that transcriptional expressions of slt2 and wetA gene were down-regulated exposure to ***,wetA in *** was identified as the condia-associated gene,which plays a role in regulating sporulation yield and conidia *** findings provide further insight into the mechanism of VOCs secreted by Bacillus against ***,further enrich our understanding of bacteria-fungi interactions(BFIs) mediated by VOCs in natural environment,and offer a new and safer strategy for plant disease control.

关键词： Alternaria solani Bacillus subtilis 6-methyl-2-heptanone antifungal cell integrity membrane permeability

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