Root exudate-driven rhizospheric recruitment of plant growth-promoting rhizobacteria  

作　　者：Hua LIN Caixing LAI Guo YU Geoffrey ISUNAHARA Liheng LIU Habib ULLAH Jie LIU 

机构地区：[1]College of Environmental Science and Engineering,Guilin University of Technology,Guilin 541004,China [2]Center for Water and Ecology,State Key Joint Laboratory of Environment Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing 100084,China [3]Department of Natural Resource Sciences,McGill University,Montreal H3A 0G4,Canada [4]Department of Environmental Science,Zhejiang University,Hangzhou 310058,China

出　　处：《Pedosphere》2025年第1期216-228,共13页土壤圈(英文版)

基　　金：sponsored by the National Science Foundation of China(Nos.52200189,52230006,and 32271700);the Guangxi Science and Technology Project,China(Nos.2021GXNSFBA220055,2020GXNSFAA297256,and Guike AB21220049);the Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology;Guangxi Engineering Research Center of Comprehensive Treatment for Agricultural Non-Point Source Pollution;Modern Industry College of Ecology and Environmental Protection from Guilin University of Technology,China for support。

摘　　要：To promote growth,terrestrial plants release photosynthetic products into the rhizosphere in the form of root exudates through their root systems.Under the attraction of root exudates,plant growth-promoting rhizobacteria(PGPR)colonize the rhizosphere to stimulate plant growth and/or suppress the growth of pathogenic microorganisms.The rhizospheric recruitment of PGPR,as well as the establishment of root-microbe interactions,is initiated by chemotaxis towards root exudates.Over the past several decades,scientists have made notable strides in identifying representative chemoeffectors in root exudates,as well as the corresponding chemoreceptors.We review here the most recent developments in rhizospheric chemotaxis,particularly the chemoeffectors in root exudates,the structural and functional characterization of methyl-accepting chemotaxis proteins of PGPR,and the impacts of rhizospheric chemotaxis on root colonization,biofilm formation,and other root-microbe interactions during recruitment.Finally,we propose several perspectives that aim to fully unlock the potential of PGPR as bioinoculants in sustainable agriculture.

关 键 词：biofilm formation CHEMOATTRACTANT chemoeffector methyl-accepting chemotaxis proteins rhizospheric colonization 

分 类 号：S154.3[农业科学—土壤学]