Biocontrol mechanism of Bacillus siamensis sp. QN2MO-1 against tomato fusarium wilt disease during fruit postharvest and planting

文献类型： 外文期刊

第一作者： Zhang, Miaoyi

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

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关键词： Bacillus siamensis; Tomato fusarium wilt; Biological control; Whole genome sequencing

期刊名称：MICROBIOLOGICAL RESEARCH （ 影响因子：6.7； 五年影响因子：7.1 ）

ISSN： 0944-5013

年卷期： 2024 年 283 卷

页码：

收录情况： SCI

摘要： Tomato fusarium wilt caused by Fusarium oxysporum f. sp. lycopersici (Fol) is a highly destructive disease, resulting in severe economic losses of global tomato production annually. An eco-friendly alternative to chemical fungicide using biological control agents (BCAs) is urgently needed. Here, Bacillus siamensis QN2MO-1 was isolated from Noli fruit and had a strong antagonistic activity against Fol in vitro and in vivo. Strain QN2MO-1 also exhibited a broad-spectrum antifungal activity against the selected 14 phytopathogenic fungi. The crude protein produced by strain QN2MO-1 could inhibit the spore germination of Fol and destroy the spore structure. It was closely related with the generation of chitinase and beta-1,3-glucanase secreted by strain QN2MO-1. In a pot experiment, the application of B. siamensis QN2MO-1 effectively alleviated the yellowing and wilting symptoms of tomato plants. The disease index and incidence rate were decreased by 72.72% and 80.96%, respectively. The rhizospheric soil in tomato plants owed a high abundance of microbial community. Moreover, strain QN2MO-1 also enhanced the plant growth and improved the fruit quality of tomato. Therefore, B. siamensis QN2MO-1 will be explored as a potential biocontrol agent and biofertilizer.

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