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Screening of Bacillus subtilis HAAS01 and Its Biocontrol Effect on Fusarium wilt in Sweet Potato

文献类型： 外文期刊

作者： Li, Chengyang 1 ; Wang, Lianjun 1 ; Chai, Shasha 1 ; Xu, Yinghua 1 ; Wang, Chong 1 ; Liu, Yi 1 ; Lei, Jian 1 ; Jin, Xiaojie 1 ; Cheng, Xianliang 1 ; Yang, Yuanyuan 1 ; Yang, Xinsun 1 ; Zhang, Wenying 2 ;

作者机构： 1.Hubei Acad Agr Sci, Food Crops Inst, Hubei Engn & Technol Res Ctr Sweet Potato, Hubei Key Lab Food Crop Germplasm & Genet Improve, Wuhan 430064, Peoples R China

2.Yangtze Univ, Res Ctr Crop Stresses Resistance Technol, Jingzhou 434025, Peoples R China

关键词： Bacillus subtilis HAAS01; Ipomoea batatas (L; ) Lam; Fusarium wilt; Fusarium oxysporum f; sp batatas; biological control

期刊名称：PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：1.407； 五年影响因子：0.996 ）

ISSN： 0031-9457

年卷期： 2022 年 91 卷 8 期

页码：

收录情况： SCI

摘要： Fusarium wilt, a disease caused by Fusarium oxysporum f.sp batatas (Fob) is an important disease in sweet potato production. Using endophytic bacteria for biological control of sweet potato diseases is one of the important ways. A Bacillus subtilis with antagonistic effect on Fusarium wilt of sweet potato was isolated from soil by confrontation culture. According to the biological characteristics, 16S rDNA sequence analysis, and physiological and biochemical analysis, the Bacillus subtilis HAAS01 was named. A pot experiment was conducted for the biological control experiment of strain HAAS01, and the endogenous hormone content, antioxidant enzyme activity, soluble protein content, and related gene expressions of sweet potato plants were detected. The results showed that the HAAS01 strain could promote the production of endogenous hormones and resist the infection of plant diseases together with defensive enzymes and upregulation of related gene expressions. In summary, Bacillus subtilis HAAS01 was effective in controlling Fusarium wilt of sweet potato and has potential for application and development.

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