数字农科院2.0

Microbial Community Homeostasis Acts as a Defense Barrier Against Tomato Soil-Borne Diseases

文献类型： 外文期刊

作者： Xingxing Ping;Raja Asad Ali Khan;Liqun Song;Zhenchuan Mao;Jian Ling

作者机构：

关键词： Fusarium oxysporum f. sp. lycopersici;Meloidogyne incognita;Ralstonia solanacearum;rhizosphere microbiome;tomato

期刊名称： Horticulturae

ISSN： 2311-7524

年卷期： 2025 年 11 卷 11 期

页码：

收录情况： SCIE（2025版）

摘要： The role of the rhizosphere microbiome in naturally suppressing soilborne diseases remains a critical unknown in sustainable agriculture. We investigated this by challenging three genotypes of tomato plants grown in pre-sterilized and natural soils with three major soil-borne pathogens: Ralstonia solanacearum, Fusarium oxysporum f. sp. lycopersici, and Meloidogyne incognita. The results showed that all tomato genotypes grown in pre-sterilized soils exhibited significantly higher disease severity with all pathogens. This protective effect was linked to higher microbial diversity and the abundance of beneficial taxa like Sphingomonas and Mortierella in natural soil as a significant reduction was recorded in microbial diversity and these microbial taxa in pre-sterilized soil. Pre-sterilization shifted community assembly from deterministic processes to stochastic processes, reducing functional stability. Functional predictions further demonstrated an enrichment of growth-promoting and disease-suppressive traits in natural soils, while sterilized soils favored pathogen-associated functions. Co-occurrence network analysis confirmed that the natural microbiome formed a more complex and robust microbial network, likely increasing its resistance to pathogen invasion. Notably, the reintroduction of soil microbiota from healthy plants partially restored tomato resistance to the three pathogens. These findings highlight the key role of stable rhizosphere microbial communities in suppressing soil-borne diseases and emphasize the importance of conserving microbial diversity and functional stability for plant health and sustainable agriculture.

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