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
作者： Zhang, Miaoyi 1 ; Li, Xiaojuan 1 ; Pan, Yongbo 4 ; Qi, Dengfeng 1 ; Zhou, Dengbo 1 ; Chen, Yufeng 1 ; Feng, Junting 1 ; Wei, Yongzan 1 ; Zhao, Yankun 1 ; Li, Kai 1 ; Wang, Wei 1 ; Zhang, Lu 3 ; Xie, Jianghui 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Natl Key Lab Trop Crop Breeding, 4 Xueyuan Rd, Haikou 571101, Peoples R China
2.Chinese Acad Trop Agr Sci, Sanya Res Inst, 4 Xueyuan Rd, Haikou 571101, Peoples R China
3.Hainan Normal Univ, Coll Life Sci, Key Lab Trop Anim & Plant Ecol Hainan Prov, Minist Educ,Key Lab Ecol Trop Isl, Haikou 571158, Hainan, Peoples R China
4.Hainan Inst Food Control, Key Lab Trop Fruits & Vegetables Qual & Safety Sta, Haikou 570314, Peoples R China
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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