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RIN enhances plant disease resistance via root exudate-mediated assembly of diseasesuppressive rhizosphere microbiota

引用

Molecular Plant 2023年第9期16卷 1379-1395页

作者： Keming Yang Ruixin Fu Haichao Feng Gaofei Jiang Omri Finkel Tianyu Sun Mingchun Liu Baowen Huang Shan Li Xiaofang Wang Tianjie Yang Yikui Wang Shimei Wang Yangchun Xu Qirong Shen Ville-Petri Friman Alexandre Jousset Zhong Wei Key Lab of Organic-based Fertilizers of China Jiangsu Provincial Key Lab of Solid Organic Waste UtilizationJiangsu Collaborative Innovation Center of Solid Organic WastesEducational Ministry Engineering Center of Resource-saving fertilizersNanjing Agricultural UniversityNanjingJiangsu 210095China College of Agro-grassland Science Nanjing Agricultural UniversityNanjingJiangsu 210095China School of Biology and Food Shangqiu Normal UniversityShangqiu 476000China College of Agriculture Henan UniversityZhengzhou 450046China Department of Plant and Environmental Sciences Institute of Life ScienceThe Hebrew University of JerusalemJerusalemIsrael Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education College of Life SciencesState Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu 610064China Key Laboratory of Plant Hormones and Development Regulation of Chongqing School of Life SciencesChongqing UniversityChongqingChina Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074China Institute of Vegetable Research Guangxi Academy of Agricultural SciencesNanningChina Department of Biology University of YorkYork YO105DDUK Department of Microbiology University of Helsinki00014 HelsinkiFinland

The RIPENING-INHIBITOR(RIN)transcriptional factor is a key regulator governing fruit *** RIN also affects other physiological processes,its potential roles in triggering interactions with the rhizosphere microbiome and plant health are *** we show that RIN affects microbiome-mediated disease resistance via root exudation,leading to recruitment of microbiota that suppress the soil-borne,phytopathogenic Ralstonia solanacearum *** with the wild-type(WT)plant,RIN mutants had different root exudate profiles,which were associated with distinct changes in microbiome composition and ***,the relative abundances of antibiosis-associated genes and pathogensuppressing Actinobacteria(Streptomyces)were clearly lower in the rhizosphere of rin *** composition,diversity,and suppressiveness of rin plant microbiomes could be restored by the application of 3-hydroxyflavone and riboflavin,which were exuded in much lower concentrations by the rin ***,RIN-mediated effects on root exudates,Actinobacteria,and disease suppression were evident from the seedling stage,indicating that RIN plays a dual role in the early assembly of diseasesuppressive microbiota and late fruit ***,our work suggests that,while plant disease resistance is a complex trait driven by interactions between the plant,rhizosphere microbiome,and the pathogen,it can be indirectly manipulated using"prebiotic"compounds that promote the recruitment of disease-suppressive microbiota.

关键词： rhizosphere microbiome plant-microbe interactions disease-suppressive microbiota rhizosphere immunity bacterial wilt tomato root exudates

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