Global characterization of OsPIP aquaporins reveals that the H_(2)O_(2)transporter OsPIP2;6 increases resistance to rice blast  

作　　者：Gousi Li Jingluan Han Chen Yi Hao Luo Yuzhu Wang Fengpin Wang Xiaoyu Wang Letian Chen Yaling Zhang 

机构地区：[1]State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,College of Life Sciences,South China Agricultural University,Guangzhou 510642,Guangdong,China [2]Guangdong Laboratory for Lingnan Modern Agriculture,Guangzhou 510642,Guangdong,China [3]National Key Laboratory of Plant Molecular Genetics,Shanghai Center for Plant Stress Biology,CAS Center for Excellence in Molecular Plant Sciences,Shanghai Institute of Plant Physiology and Ecology,Chinese Academy of Sciences,Shanghai 200032,China

出　　处：《The Crop Journal》2024年第1期102-109,共8页作物学报（英文版）

基　　金：supported by the Guangdong Basic and Applied Basic Research Foundation(2020A1515111101,2022A1515110431).

摘　　要：Plasma membrane intrinsic proteins(PIPs)are conserved plant aquaporins that transport small molecules across the plasma membrane to trigger instant stress responses and maintain cellular homeostasis under biotic and abiotic stress.To elucidate their roles in plant immunity to pathogen attack,we characterized the expression patterns,subcellular localizations,and H_(2)O_(2)-transport ability of 11 OsPIPs in rice(Oryza sativa),and identified OsPIP2;6 as necessary for rice disease resistance.OsPIP2;6 resides on the plasma membrane and facilitates cytoplasmic import of the immune signaling molecule H_(2)O_(2).Knockout of OsPIP2;6 increases rice susceptibility to Magnaporthe oryzae,indicating a positive function in plant immunity.OsPIP2;6 interacts with OsPIP2;2,which has been reported to increase rice resistance to pathogens via H_(2)O_(2)transport.Our findings suggest that OsPIP2;6 cooperates with OsPIP2;2 as a defense signal transporter complex during plant–pathogen interaction.

关 键 词：AQUAPORIN Plant immunity Rice blast H_(2)O_(2)transport 

分 类 号：S435.111.41[农业科学—农业昆虫与害虫防治]