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The Endochitinase of Clonostachysrosea Expression in Bacillus amyloliquefaciens Enhances the Botrytis cinerea Resistance of Tomato.


ABSTRACT: To investigate whether the ech42 gene in Clonostachysrosea can improve the biocontrol efficacy of Bacillus amyloliquefaciens and its molecular mechanism. Compared to the wild type, the B. amyloliquefaciens transformed with the ech42 gene exhibited higher chitinase activity. The B. amyloliquefaciens-ech42 also showed significantly higher biocontrol efficiency compared to Botrytiscinerea when tomato plants were pre-treated with B. amyloliquefaciens-ech42. No significant difference in biocontrol efficiency was observed between the wild type and B.amyloliquefaciens-ech42 when tomato plants were first infected by Botrytiscinerea. In addition, the activity of the defense-related enzyme polyphenol oxidase, but not superoxide dismutase, was significantly higher in B. amyloliquefaciens-ech42 than in the wild type. The ech42 enhances the biocontrol efficiency of B.amyloliquefaciens by increasing the capacity of preventative/curative effects in plants, rather than by killing the pathogens.

SUBMITTER: Zheng Y 

PROVIDER: S-EPMC6121428 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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The Endochitinase of <i>Clonostachysrosea</i> Expression in <i>Bacillus amyloliquefaciens</i> Enhances the <i>Botrytis cinerea</i> Resistance of Tomato.

Zheng Yangyang Y   Wang Xudong X   Liu Siyuan S   Zhang Kewei K   Cai Zhibo Z   Chen Xiuling X   Zhang Yao Y   Liu Jiayin J   Wang Aoxue A  

International journal of molecular sciences 20180730 8


To investigate whether the <i>ech42</i> gene in <i>Clonostachysrosea</i> can improve the biocontrol efficacy of <i>Bacillus amyloliquefaciens</i> and its molecular mechanism. Compared to the wild type, the <i>B. amyloliquefaciens</i> transformed with the ech42 gene exhibited higher chitinase activity. The <i>B. amyloliquefaciens</i>-ech42 also showed significantly higher biocontrol efficiency compared to <i>Botrytiscinerea</i> when tomato plants were pre-treated with <i>B. amyloliquefaciens-</i>  ...[more]

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