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

文献类型： 外文期刊

第一作者： Yang, Keming

作者： Yang, Keming;Fu, Ruixin;Jiang, Gaofei;Sun, Tianyu;Wang, Xiaofang;Yang, Tianjie;Wang, Shimei;Xu, Yangchun;Shen, Qirong;Friman, Ville-Petri;Jousset, Alexandre;Wei, Zhong;Yang, Keming;Fu, Ruixin;Feng, Haichao;Finkel, Omri;Liu, Mingchun;Huang, Baowen;Li, Shan;Wang, Yikui;Friman, Ville-Petri;Friman, Ville-Petri

作者机构：

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

期刊名称：MOLECULAR PLANT （ 影响因子：27.5； 五年影响因子：22.6 ）

ISSN： 1674-2052

年卷期： 2023 年 16 卷 9 期

页码：

收录情况： SCI

摘要： The RIPENING-INHIBITOR (RIN) transcriptional factor is a key regulator governing fruit ripening. While RIN also affects other physiological processes, its potential roles in triggering interactions with the rhizosphere microbiome and plant health are unknown. Here 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 bacterium. Compared with the wild-type (WT) plant, RIN mutants had different root exudate profiles, which were associated with distinct changes in microbiome composition and diversity. Specifically, the relative abundances of antibiosis-associated genes and pathogen suppressing Actinobacteria (Streptomyces) were clearly lower in the rhizosphere of rin mutants. The 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 mutant. Interestingly, 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 disease suppressive microbiota and late fruit development. Collectively, 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.

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