Streptomyces-Secreted Fluvirucin B6 as a Potential Bio-Fungicide for Managing Banana Fusarium Wilt and Mycotoxins and Modulating the Soil Microbial Community Structure

文献类型： 外文期刊

第一作者： Chen, Yufeng

作者： Chen, Yufeng;Li, Xiaojuan;Zhou, Dengbo;Wei, Yongzan;Feng, Junting;Cai, Bingyu;Qi, Dengfeng;Zhang, Miaoyi;Zhao, Yankun;Li, Kai;Wang, Wei;Xie, Jianghui;Pan, Zhiqiang

作者机构：

关键词： secondary metabolite; fluvirucin B6; Fusarium oxysporum; mycotoxins; rhizospheremicrobial community

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.7； 五年影响因子：6.0 ）

ISSN： 0021-8561

年卷期： 2024 年 72 卷 32 期

页码：

收录情况： SCI

摘要： Banana Fusarium wilt caused by Fusarium oxysporum f. sp. cubense (Foc TR4) is the most destructive soil-borne fungal disease. Until now, there has been a lack of effective measures to control the disease. It is urgent to explore biocontrol agents to control Foc TR4 and the secretion of mycotoxin. In this study, fluvirucin B6 was screened from Streptomyces solisilvae using an activity-guided method. Fluvirucin B6 exhibited strong antifungal activity against Foc TR4 (0.084 mM of EC50 value) and significantly inhibited mycelial growth and spore germination. Further studies demonstrated that fluvirucin B6 could cause the functional loss of mitochondria, the disorder of metabolism of Foc TR4 cells, and the decrease of enzyme activities in the tricarboxylic acid cycle and electron transport chain, ultimately inhibiting mycotoxin metabolism. In a pot experiment, the application of fluvirucin B6 significantly decreased the incidence of banana Fusarium wilt and the amount of Foc TR4 and controlled fungal toxins in the soil. Additionally, fluvirucin B6 could positively regulate the changes in the structure of the banana rhizosphere microbial community, significantly enriching beneficial microbes associated with disease resistance. In summary, this study identifies fluvirucin B6, which plays versatile roles in managing fungal diseases and mycotoxins.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序