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Microbial inoculants drive disease suppression and rhizosphere modulation for effective management of pepper phytophthora blight

文献类型： 外文期刊

作者： Xiao, Muye 1 ; Liu, Xuchen 2 ; Wang, Xiaozhong 2 ; Lu, Wencai 4 ; Zhang, Tong 2 ; Yang, Yuheng 1 ;

作者机构： 1.Southwest Univ, Minist Educ, Coll Plant Protect, Key Lab Agr Biosafety & Green Prod Upper Yangtze R, Chongqing 400716, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Low Carbon Green Agr Southwestern China, Chongqing 400716, Peoples R China

3.Southwest Univ, Coll Resources & Environm, Interdisciplinary Res Ctr Agr Green Dev Yangtze Ri, Chongqing 400716, Peoples R China

4.Chongqing Acad Agr Sci, Chongqing 400015, Peoples R China

关键词： Pepper Phytophthora blight; Core microbiome; Trichoderma harzianum; Bacillus subtilis; Soil-borne disease management

期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：5.0； 五年影响因子：5.4 ）

ISSN： 0929-1393

年卷期： 2025 年 208 卷

页码：

收录情况： SCI

摘要： Peppers (Capsicum annuum L.) are globally important vegetable crops, yet their production is often compromised by diseases like pepper Phytophthora blight (PPB). Microbial inoculants offer a promising strategy to enhance plant growth and prevent pathogen invasion by establishing diverse core microbial communities in the rhizosphere. This study investigated the efficacy of microbial inoculants, particularly Bacillus subtilis and Trichoderma harzianum, in controlling PPB and enhancing pepper growth under both greenhouse and field conditions. Both individual and combined applications of B. subtilis and T. harzianum significantly suppressed PPB and improved pepper yield. Furthermore, we assessed how these inoculants influenced soil microbial diversity and community structure, identifying key components of the soil microbiome that contribute to disease suppression. The observed suppression of pathogens and promotion of growth were primarily associated with the recruitment of beneficial microbial groups, such as Agromyces, Nocardiopsis, MND1, Gaiella, Iamia, Massilia, Micromonospora, Fusarium, Gibberella, and Gibellulopsis. These findings suggest that microbial inoculants, particularly in combination, can effectively manage PPB and enhance crop productivity through modulation of the rhizosphere microbiome. This study provides valuable insights into the application of microbial inoculants for sustainable pepper production and disease management.

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