Frontiers in plant science · 2026
A minimal cross-kingdom SynCom promotes plant growth and suppresses wheat crown rot via coordinated rhizosphere microbiome remodeling.
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Zhou Qian, Wang Yuzhou, Zhou Tingting, Yusupu Kaidiriye, Gao Dan, Zhao Huixin, Ma Liufeng
Аннотация
INTRODUCTION: Wheat crown rot (WCR) caused by Fusarium pseudograminearum threatens wheat productivity, and sustainable control strategies are urgently needed.
METHODS: We constructed a minimal cross-kingdom synthetic community (SynCom) consisting of Trichoderma harzianum T19 and Bacillus rugosus PM16, and evaluated its effects on wheat growth and WCR suppression. Rhizosphere microbiome assembly (full-length 16S rRNA/ITS sequencing) and metabolomic shifts were assessed to elucidate mechanisms.
RESULTS: The SynCom significantly suppressed WCR and promoted wheat growth under pathogen pressure, improving biomass, chlorophyll content, and yield-related traits. SynCom inoculation remodeled the rhizosphere microbiome by enriching beneficial taxa (e.g., Mortierella) and reducing pathogen-associated fungi, and it enhanced rhizosphere enzyme activities and nutrient availability. Metabolomics revealed accumulation of growth-promoting and defense-related metabolites, supporting coordinated microbiome-metabolome regulation.
DISCUSSION: A minimal cross-kingdom SynCom can establish a disease-suppressive and growth-promoting rhizosphere through coordinated restructuring of microbial communities and metabolites, highlighting its potential as an eco-friendly strategy for WCR management.
METHODS: We constructed a minimal cross-kingdom synthetic community (SynCom) consisting of Trichoderma harzianum T19 and Bacillus rugosus PM16, and evaluated its effects on wheat growth and WCR suppression. Rhizosphere microbiome assembly (full-length 16S rRNA/ITS sequencing) and metabolomic shifts were assessed to elucidate mechanisms.
RESULTS: The SynCom significantly suppressed WCR and promoted wheat growth under pathogen pressure, improving biomass, chlorophyll content, and yield-related traits. SynCom inoculation remodeled the rhizosphere microbiome by enriching beneficial taxa (e.g., Mortierella) and reducing pathogen-associated fungi, and it enhanced rhizosphere enzyme activities and nutrient availability. Metabolomics revealed accumulation of growth-promoting and defense-related metabolites, supporting coordinated microbiome-metabolome regulation.
DISCUSSION: A minimal cross-kingdom SynCom can establish a disease-suppressive and growth-promoting rhizosphere through coordinated restructuring of microbial communities and metabolites, highlighting its potential as an eco-friendly strategy for WCR management.