Isolation and identification of a novel Bacillus velezensis strain JIN4 and its potential for biocontrol of kiwifruit bacterial canker caused by Pseudomonas syringae pv. actinidiae
文献类型： 外文期刊
作者： Zhao, Xin 1 ; Zhai, Yang 1 ; Wei, Lin 2 ; Xia, Fei 3 ; Yang, Yuanru 1 ; Yi, Yongjian 1 ; Wang, Hongying 1 ; Qiu, Caisheng 1 ; Wang, Feng 4 ; Zeng, Liangbin 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Bast Fiber Crops, Changsha, Peoples R China
2.Hunan Acad Agr Sci, Inst Plant Protect, Changsha 410125, Peoples R China
3.Cent South Univ Forestry & Technol, Coll Comp & Math, Changsha, Hunan, Peoples R China
4.Guizhou Acad Tobacco Sci, Guiyang, Guizhou, Peoples R China
关键词：
antibacterial activity;
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：4.8； 五年影响因子：5.7 ）
ISSN： 1664-462X
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Bacterial canker is a devastating disease in kiwifruit production, primarily caused by Pseudomonas syringae pv. actinidiae. In this study, a strain of Bacillus velezensis named JIN4, isolated from a kiwifruit branch, showed antagonistic activity. The B. velezensis JIN4 strain was identified based on its morphological, physiological and biochemical characteristics, 16S rDNA, and gyrA sequences. Furthermore, the complete genome of the strain was elucidated, revealing the presence of three genes that confer resistance to antibiotics, including tetracycline, lincomycin, and streptomycin. Additionally, a cluster of nine secondary metabolite synthesis genes was identified. In the laboratory, the JIN4 strain exhibited nitrogen (N) and phosphorus (P) production, demonstrating plant growth-promoting and broad-spectrum inhibitory activities against pathogenic fungi and bacteria. In the field, the JIN4 strain demonstrated effective colonization of kiwifruit, increased antioxidant enzyme activity, induced resistance in kiwifruit plants, and achieved a control efficiency of 60.22% against kiwifruit bacterial canker. These results indicate that B. velezensis JIN4 is a potential biocontrol agent against kiwifruit bacterial canker.
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