文献类型： 外文期刊
作者： Li, Yongfeng 1 ; Gao, Zhaoliang 2 ; Kong, Weiliang 1 ; Xiao, Yueting 1 ; Adjei, Mark Owusu 1 ; Fan, Ben 1 ;
作者机构： 1.Nanjing Forestry Univ, Coll Forestry & Grassland, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China
2.Shanghai Acad Agr Sci, Forest & Fruit Tree Res Inst, Shanghai 201403, Peoples R China
关键词：
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2025 年 14 卷 3 期
页码：
收录情况： SCI
摘要： Crown gall disease (CGD), caused by Agrobacterium tumefaciens, is a common plant disease that leads to significant economic losses. Biological control is a sustainable and scalable method for managing CGD. In this study, we isolated three Bacillus strains from the rhizosphere soil of healthy cherry trees and investigated their biocontrol activities and the underlying mechanisms against CGD of cherry trees. The results demonstrate that the three Bacillus strains can effectively inhibit the growth of the pathogenic A. tumefaciens strain XYT58 in vitro under different culture conditions. The pot experiments showed that the three strains could prevent CGD in cherry seedlings. Using PCR amplification, we identified the genes responsible for the synthesis of difficidin, macrolactin, and bacilysin in the three strains. In addition, inoculation with strains WY66 and WY519 significantly enhanced the expression of JA, ET, and SA pathway-related genes in cherry plants. The presence of antibiotic synthesis-related genes in the Bacillus strains and the trigger of plant ISR may explain their ability to control CGD in cherry trees. The findings of this study provide a theoretical basis for the application and development of plant growth-promoting rhizobacteria Bacillus strains in the control of CGD.
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