Biotic and abiotic responses to soilborne pathogens and environmental predictors of soil health

作者：Bruna Durante Batista, Juntao Wang, Hongwei Liu, Simranjit Kaur, Catriona A. Macdonald, Zhiguang Qiu, Pankaj Trivedi, Manuel Delgado‐Baquerizo, Chao Xiong, Jinsong Liang, Michael Bange, Brajesh K. Singh · 发表于：Soil Biology and Biochemistry · 年份：2023 · DOI：10.1016/j.soilbio.2023.109246 · 被引用次数：42 · 研究领域：Plant-Microbe Interactions and Immunity、Mycorrhizal Fungi and Plant Interactions、Gut microbiota and health

Soilborne pathogens affect agricultural productivity and soil functions, yet their specific impacts of pathogen infections on the soil and plant root-associated microbiomes, the key determinants of plant health, remain unclear. Filling this knowledge gap is required to understanding microbial ecological responses, and to developing biological tools to manage and predict the prevalence and severity of soilborne diseases, which can improve soil health, and plant yield. We hypothesized that soilborne pathogens impact the diversity, function, and ecological interactions in soil microbiomes and form a pathobiome. To test the hypothess, we conducted field sampling in 35 cotton fields in Australia and collected a total of 560 soil samples, which included samples from the rhizosphere (the area in close contact with the roots) and bulk soils. We aimed to investigate how soil microbiomes and key soil properties respond to Verticillium wilt (VW) of cotton, which is caused by the soilborne pathogen Verticillium dahliae. We found that the presence of the pathogen altered the microbiome structure in both bulk and rhizosphere soils. Notably, healthy soils exhibited more complex microbial networks then diseased soils. Furthermore, a putative pathobiome consisting of various microbial taxa that could influence pathogen infection was identified. Specific pathobiome taxa, such as Gibellulopsis spp., displayed a positive association with V. dahliae. In contrast, known biocontrol agents (BCAs) su...