Abstract Fusarium wilt disease of banana crops is of great economic concern because banana is the fifth most important consumed agricultural product in global trade. Crop rotation management is often used to suppress soil-borne diseases. However, little is known about the mechanisms that govern soil disease depression. A 2-year field experiment was conducted to evaluate the effects of chilli pepper-banana rotation on the suppression of banana Fusarium wilt disease. The chilli pepper-banana rotation system effectively reduced the incidence of banana wilt disease relative to that under the banana monoculture system. The abundance of Fusarium oxysporum, a causal pathogen for banana wilt disease, was significantly decreased in the chilli pepper-banana rotation system compared to the banana monoculture system, regardless of whether it was estimated after rotation or harvest. Chilli pepper-banana rotation significantly stimulated bacterial and fungal abundance and diversity, and the community structure of both bacteria and fungi showed a significant shift, with cultivated crop (chilli pepper) having the largest impact. Higher relative abundances of Gemmatimonas, Pseudomonas, Sphingobium, Sphingomonas, Penicillium, Mortierella and Chaetomium and a lower relative abundance of Fusarium were identified in the rotation soil compared to the monoculture soil. Mantel tests and redundancy analysis (RDA) indicated that soil pH best explained the overall variation in bacterial and fungal communities. Overall, chilli pepper-banana rotation changes soil physiochemical properties, thereby optimizing the niches of beneficial soil microbiome that may contribute to suppress wilt disease associated with F. oxysporum in banana monoculture systems.

中文翻译：

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香蕉枯萎病显着下降与辣椒-香蕉轮作下土壤微生物组重建有关

摘要 香蕉枯萎病在经济上受到极大关注，因为香蕉是全球贸易中第五大消费农产品。轮作管理通常用于抑制土传病害。然而，人们对控制土壤病害抑制的机制知之甚少。进行了为期 2 年的田间试验，以评估辣椒-香蕉轮作对抑制香蕉枯萎病的影响。相对于香蕉单一栽培系统，辣椒-香蕉轮作系统有效地降低了香蕉枯萎病的发生率。与香蕉单一栽培系统相比，辣椒-香蕉轮作系统中香蕉枯萎病的致病病原体尖孢镰刀菌的丰度显着降低，不管是在轮作还是收获后估计的。辣椒-香蕉轮作显着刺激了细菌和真菌的丰度和多样性，细菌和真菌的群落结构均发生显着变化，其中栽培作物（辣椒）影响最大。与单一栽培土壤相比，轮作土壤中鉴定出 Gemmatimonas、Pseudomonas、Sphingobium、Sphingomonas、Penicillium、Mortierella 和 Chaetomium 的相对丰度较高，而 Fusarium 的相对丰度较低。Mantel 测试和冗余分析 (RDA) 表明土壤 pH 值最好地解释了细菌和真菌群落的整体变化。总体而言，辣椒-香蕉轮作改变了土壤理化性质，