Involvement of Plasma Membrane H+-ATPase in Adaption of Rice to Ammonium Nutrient

查看全文 作　　者：Yi-yong [1]ZHU;Juan [1]LIAN;Hou-qing [1]ZENG;Liu [1]GAN;Ting-jun [1]DI;Qi-rong [1]SHEN;Guo-hua [1]XU

机构地区：[1]Department of Plant Nutrition, College of Resources and Environmental Sciences, Nanjing 210095, China

出　　处：《Rice science》索引2011年第18卷第4期,共8页

基　　金：supported by the National Natural Science Foundation of China(Grant No.30971864) 摘　　要：The preference of paddy rice for NH4+ rather than NO3ˉ is associated with its tolerance to low pH since a rhizosphere acidification occurs during NH4+ absorption.However,the adaptation of rice root to low pH has not been fully elucidated.The plasma membrane H+-ATPase is a universal electronic H+ pump,which uses ATP as energy source to pump H+ across the plasma membranes into the apoplast.The key function of this enzyme is to keep pH homeostasis of plant cells and generate a H+ electrochemical gradient,thereby providing the driving force for the active influx and efflux of ions and metabolites across the plasma membrane.This study investigated the acclimation of plasma membrane H+-ATPase of rice root to low pH.This mechanism might be partly responsible for the preference of rice plants to NH4+ nutrition. 关键词：RICE ammonium nutrient plasma membrane H+-ATPase

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Involvement of Plasma Membrane H+-ATPase in Adaption of Rice to Ammonium Nutrient

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