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Science China. Life sciences
Mar 11, 2025;

Root exudates and microbial metabolites: signals and nutrients in plant-microbe interactions.

Xiaoyan Fan, An-Hui Ge, Shanshan Qi, Yuefeng Guan, Ran Wang, Nan Yu, Ertao Wang
Author Information
  1. Xiaoyan Fan: New Cornerstone Science Laboratory, Key Laboratory of Plant Carbon Capture, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China.
  2. An-Hui Ge: New Cornerstone Science Laboratory, Key Laboratory of Plant Carbon Capture, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China.
  3. Shanshan Qi: New Cornerstone Science Laboratory, Key Laboratory of Plant Carbon Capture, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China.
  4. Yuefeng Guan: School of Life Sciences, Guangzhou University, Guangzhou, 510006, China. guan@gzhu.edu.cn.
  5. Ran Wang: College of Life Sciences, Henan Province Engineering Research Center of Crop Synthetic Biology, Henan Agricultural University, Zhengzhou, 450046, China. wangran@henau.edu.cn.
  6. Nan Yu: Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China. nyu@shnu.edu.cn.
  7. Ertao Wang: New Cornerstone Science Laboratory, Key Laboratory of Plant Carbon Capture, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China. etwang@cemps.ac.cn.
PMID: 40080268 DOI: 10.1007/s11427-024-2876-0

Abstract

Plant roots meticulously select and attract particular microbial taxa from the surrounding bulk soil, thereby establishing a specialized and functionally diverse microbial community within the rhizosphere. Rhizosphere metabolites, including root exudates and microbial metabolites, function as both signals and nutrients that govern the assembly of the rhizosphere microbiome, playing crucial roles in mediating communications between plants and microbes. The environment and their feedback loops further influence these intricate interactions. However, whether and how specific metabolites shape plant-microbe interactions and facilitate diverse functions remains obscure. This review summarizes the current progress in plant-microbe communications mediated by chemical compounds and their functions in plant fitness and ecosystem functioning. Additionally, we raise some prospects on future directions for manipulating metabolite-mediated plant-microbe interactions to enhance crop productivity and health. Unveiling the biological roles of specific metabolites produced by plants and microbes will bridge the gap between fundamental research and practical applications.

Keywords

agricultural application microbial metabolites plant-microbe interaction rhizosphere microbiome root exudates

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