Fusaric acid mediates the assembly of disease-suppressive rhizosphere microbiota via induced shifts in plant root exudates

Xue Jin, Huiting Jia, Lingyi Ran, Fengzhi Wu, Junjie Liu, Klaus Schlaeppi, Francisco Dini-Andreote, Zhong Wei () and Xingang Zhou ()
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Xue Jin: Northeast Agricultural University
Huiting Jia: Northeast Agricultural University
Lingyi Ran: Northeast Agricultural University
Fengzhi Wu: Northeast Agricultural University
Junjie Liu: Chinese Academy of Sciences
Klaus Schlaeppi: University of Basel
Francisco Dini-Andreote: The Pennsylvania State University
Zhong Wei: Nanjing Agricultural University
Xingang Zhou: Northeast Agricultural University

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract The plant health status is determined by the interplay of plant-pathogen-microbiota in the rhizosphere. Here, we investigate this tripartite system focusing on the pathogen Fusarium oxysporum f. sp. lycopersici (FOL) and tomato plants as a model system. First, we explore differences in tomato genotype resistance to FOL potentially associated with the differential recruitment of plant-protective rhizosphere taxa. Second, we show the production of fusaric acid by FOL to trigger systemic changes in the rhizosphere microbiota. Specifically, we show this molecule to have opposite effects on the recruitment of rhizosphere disease-suppressive taxa in the resistant and susceptible genotypes. Last, we elucidate that FOL and fusaric acid induce changes in the tomato root exudation with direct effects on the recruitment of specific disease-suppressive taxa. Our study unravels a mechanism mediating plant rhizosphere assembly and disease suppression by integrating plant physiological responses to microbial-mediated mechanisms in the rhizosphere.

Date: 2024
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DOI: 10.1038/s41467-024-49218-9

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