Selection of rhizosphere communities of diverse rotation crops reveals unique core microbiome associated with reduced banana Fusarium wilt disease

根际 生物 微生物群 作物 枯萎病 作物轮作 尖孢镰刀菌 分类单元 植物 生物技术 农学 细菌 遗传学
作者
Shan Hong,Xianfu Yuan,Jinming Yang,Yue Yang,Hongling Jv,Rong Li,Zhongjun Jia,Yunze Ruan
出处
期刊:New Phytologist [Wiley]
卷期号:238 (5): 2194-2209 被引量:34
标识
DOI:10.1111/nph.18816
摘要

Summary Crop rotation can assemble distinct core microbiota as functionally specific barriers against the invasion of banana Fusarium oxysporum pathogens. However, the taxonomic identity of rotation‐unique core taxa and their legacy effects are poorly understood under field conditions. Pepper and eggplant rotations were employed to reveal rotation crop‐ and banana‐unique antagonistic core taxa by in situ tracking of the soil microbiome assembly patterns for 2 yr. The rotation crop‐unique antagonistic taxa were isolated and functionally verified by culture‐dependent techniques, high‐throughput sequencing, and pot experiments. Pepper and eggplant rotations resulted in eight and one rotation‐unique antagonistic core taxa out of 12 507 microbial taxa, respectively. These nine antagonistic taxa were retained the following year and significantly decreased banana wilt disease incidence via legacy effects, although the cultivated strains were exclusively of the genera Bacillus and Pseudomonas . The fermentation broth and volatiles of these two taxa showed strong antagonistic activity, and pot experiments demonstrated high suppression of wilt disease and significant promotion of banana growth. Our study provides a mechanistic understanding of the identification of rotation crop‐unique antagonistic taxa and highlights the importance of targeted cultivation of beneficial microorganisms for optimizing crop rotation‐based scenarios in support of banana agriculture sustainability.
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