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GroEL protein from the potential biocontrol agent Rhodopseudomonas palustris enhances resistance to rice blast disease

文献类型： 外文期刊

作者： Wu, Xiyang 1 ; Chen, Yue 1 ; Li, Chenggang 1 ; Zhang, Xin 1 ; Tan, Xinqiu 1 ; Lv, Liang 4 ; Liu, Yong 1 ; Zhang, Deyong 1 ;

作者机构： 1.Hunan Acad Agr Sci, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China

2.Hunan Acad Agr Sci, Inst Plant Protect, Changsha 410125, Peoples R China

3.Hunan Univ, Grad Sch, Long Ping Branch, Changsha, Peoples R China

4.Hubei Acad Agr Sci, Key Lab Integrated Pest Management Crops Cent Chi, Minist Agr, Wuhan, Peoples R China

5.Hubei Acad Agr Sci, Hubei Prov Key Lab Crop Dis Insect Pests & Weeds, Inst Plant Protect & Soil Sci, Wuhan, Peoples R China

关键词： Rhodopseudomonas palustris; GroEL; Magnaporthe oryzae; antifungal effect

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）

ISSN： 1526-498X

年卷期： 2021 年 77 卷 12 期

页码：

收录情况： SCI

摘要： BACKGROUND GroEL, which is a chaperone, plays a key role in maintaining protein homeostasis and, among other functions, serves to prevent protein misfolding and aggregation. In addition, the GroEL protein also has a significant effect on enhancing plant resistance and inhibiting plant diseases. However, the function of the GroEL protein in the inhibition of rice blast remains unknown. RESULTS Field experiment results show that photosynthetic bacteria PSB-06 have a good control effect on Magnaporthe oryzae. PSB-06 also can promote rice growth and enhance stress resistance. A GroEL protein which was separated and purified from photosynthetic bacteria had a significant antagonistic effect on appressorial formation and pathogenicity of Magnaporthe oryzae, meanwhile transcriptional analysis demonstrated that the GroEL protein could improve the expression of defense gene of rice. CONCLUSION Our results show that the photosynthetic bacteria Rhodopseudomonas palustris significantly controls rice blast disease. Its action involves an extracellular GroEL protein, which inhibits appressoria formation, antagonizes the pathogenicity of Magnaporthe oryzae and promotes a host defense response. The research results provide evidence of the potential of this photosynthetic bacterium as a biocontrol agent at least for rice blast control.

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