您好，欢迎访问安徽省农业科学院 机构知识库！

Root exudates mediate tobacco microbial community remodeling and resistance to bacterial wilt disease

文献类型： 外文期刊

作者： Xia, Hao 1 ; Jiang, Chaoqiang 1 ; Riaz, Muhammad 2 ; Zhang, Guo 3 ; Wang, Xueying 3 ; Yang, Huaying 1 ; Zu, Chaolong 1 ; Pan, Xiaolu 1 ; Shen, Jia 1 ;

作者机构： 1.Anhui Acad Agr Sci AAAS, Ind Crop Inst, Hefei 230001, Peoples R China

2.Zhongkai Univ Agr & Engn, Coll Resources & Environm, Guangzhou, Peoples R China

3.Anhui Wannan Tobacco Co, Xuancheng, Peoples R China

关键词： Ralstonia solanacearum; phenolic acid; organic acid; soil microorganisms; tobacco variety

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：3.8； 五年影响因子：4.3 ）

ISSN： 1526-498X

年卷期： 2025 年

页码：

收录情况： SCI

摘要： BACKGROUND Bacterial wilt, a devastating soil-borne disease affecting tobacco, is primarily caused by the pathogenic bacterium (Ralstonia solanacearum). R. solanacearum represents a substantial threat to the consistent enhancement of tobacco yield and quality. Root exudates act as chemical signals that regulate the activity of soil pathogens. The study aimed to: (1) compare the rhizosphere soil chemistry and microbial communities across tobacco varieties with different disease resistance levels at various growth stages; (2) identify metabolites involved in bacterial wilt and suggest optimal prevention timing; and (3) explain how disease-resistant varieties regulate the rhizosphere to reduce bacterial wilt transmission. RESULTS Our findings revealed that the acidic rhizosphere soil of P1 (Chang Bo Huang, 100% infection rate) led to reduced nutrient availability. In P4 (Yan Yan 97, 0% infection rate) treatment led to a notable enhancement in the concentrations of available nitrogen (AN), available phosphorus (AP), available potassium (AK), soil organic matter (SOM) and pH, with increases ranging from 7.57% similar to 8.67%, 7.59% similar to 30.98%, 20.48% similar to 30.99%, 7.75% similar to 23.33% and 0.41 similar to 0.47 units, respectively, when compared to the P1 treatment. Furthermore, p-coumaric acid, vanillin and protocatechuic acid increased in the rhizosphere soil of P1 at all stages. In contrast to P1, the abundance of bacteria and fungi in the rhizosphere soil of P4 decreased during the rosette stage (RS), but increased during the mature stage (MS). Additionally, root exudates influenced the composition of the rhizosphere microbial community, leading to an increase in the proliferation of pathogenic microorganisms (Xanthomonas) while simultaneously reducing the abundance of beneficial microorganisms (Actinomycetes, Ktedonobacteria). CONCLUSION This study provides a theoretical basis for the future regulation of rhizosphere exudates as a preventive measure against tobacco bacterial wilt. (c) 2025 Society of Chemical Industry.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：安徽省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台