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Effects of jinggangmycin on peroxidase and esterase isozymes and phytotoxin from Rhizoctonia solani AG-1 IA, the causal agent of rice sheath blight

文献类型： 外文期刊

作者： Yang, Ying-Qing 1 ; Li, Ming-Hai 1 ; Yang, Mei 1 ; Shu, Can-Wei 1 ; Li, Xiang-Min 2 ; Lan, Bo 2 ; Jian, Yan-Li 2 ; Zhou, 1 ;

作者机构： 1.South China Agr Univ, Dept Plant Pathol, Coll Agr, Guangzhou 510642, Guangdong, Peoples R China

2.Jiangxi Acad Agr Sci, Inst Plant Protect, Nanchang 330200, Peoples R China

3.Huaqiao Univ, Grad Sch, Xiamen 361021, Peoples R China

4.Jiangxi Univ Finance & Econ, Coll Accounting, Nanchang 330013, Peoples R China

关键词： Rice sheath blight;Rhizoctonia solani ku AG-1 IA;Jinggangmycin;Peroxidase and esterase isozymes;Phytotoxin;Pathogenicity

期刊名称：TURKISH JOURNAL OF BIOCHEMISTRY-TURK BIYOKIMYA DERGISI （ 影响因子：0.401； 五年影响因子：0.378 ）

ISSN： 0250-4685

年卷期： 2016 年 41 卷 4 期

页码：

收录情况： SCI

摘要： Objective: To explore the effects of jinggangmycin on the pathogenicity of rice sheath blight. Methods: The effects of jinggangmycin on peroxidase and esterase isozymes from Rhizoctonia solani Kuhn AG-1 IA were compared using non-denaturing polyacrylamide gel electrophoresis (PAGE). Rs-toxins were obtained from the improved Richard medium amended with jinggangmycin at different concentrations. Subsequently, bioassays of Rs-toxin, including virulence to rice tissues, seedling wilting and inhibition to the seed germination were conducted. Results: The results of PAGE showed that when the jinggangmycin concentration increased to 50 mu g/mL, two of peroxidase isozyme bands became apparently weaker compared with the controls, indicating that jinggangmycin could considerably weaken the activity of the perox-idase isozyme. In addition, three extra bands of esterase isozyme were induced by jinggangmycin when the concentration increased to 50 mu g/mL, indicating that jinggangmycin could affect the metabolism of esterase isozyme. The bioassays of Rs-toxin showed that jinggangmycin could weaken the virulence of Rs-toxin in rice tissues. Conclusion: It was concluded that the control role of jinggangmycin in rice sheath blight might be due to the effects of jinggangmycin on the peroxidase and esterase isozymes and Rs-toxin virulence.

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[1]Cloning and functional analysis of an endo-PG-encoding gene Rrspg1 of Rhizoctonia solani, the causal agent of rice sheath blight. Yang, Ying-Qing,Yang, Mei,Li, Ming-Hai,Zhou, Er-Xun,Yang, Ying-Qing. 2012

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