Organic or Inorganic Amendments Influence Microbial Community in Rhizosphere and Decreases the Incidence of Tomato Bacterial Wilt

作者：Sai Wang, Zhanbing Bai, Zhuo Zhang, Jingjing Bi, Enzhao Wang, Miaomiao Sun, Bismark Asante-Badu, Jiayin Zhang, Marie Claire Njyenawe, Alin Song, Fenliang Fan · 发表于：Agronomy · 年份：2022 · DOI：10.3390/agronomy12123029 · 被引用次数：8 · 研究领域：Plant-Microbe Interactions and Immunity、Plant Pathogens and Resistance、Plant Disease Resistance and Genetics

There are many kinds of soil amendments that consist of different materials. The soil amendment is usually of benefit to plant health. However, the effects of the soil amendments on plant disease have rarely been compared and the involved mechanisms are largely unknown. In the present study, we investigated the influences of five contrasting soil amendments (i.e., potassium silicate (PS), calcium silicate (CS), biochar (BC), calcium silicate humic acid (SCHA), and bio-organic fertilizer (BOF)) on tomato bacterial wilt. In addition, we dissected the mechanism with high-throughput sequencing. The results showed that BC, SCHA, and BOF significantly reduced the incidence and delayed the disease, while BOF significantly reduced the incidence of bacterial wilt disease in the whole tomato growing period. In the early stage of the disease, BC, SCHA, and BOF significantly reduced the soil pH compared to CK. However, the contents of soil NH4+-N and NO3−-N were significantly increased. Some beneficial bacteria genera (Burkholderia, Mortierella, and Trichoderma) had a certain correlation with the incidence. Burkholderia and Mortierella were negatively associated with morbidity, but Trichoderma was positively associated with morbidity. Particularly, the Spearman correlation and the least partial squares path analysis indicated that Trichoderma was significantly positively correlated with the disease incidence, the soil physicochemical properties, and the numbers of soil pathogens (NSP) we...