植物液泡膜H+-PPase在耐盐性调控中的作用  

Role of plant vacuolar H;-pyrophosphatase in salt tolerance

作　　者：张会龙 赵健宇 武海雯 杨秀艳 张华新[1,2,3] ZHANG Huilong;ZHAO Jianyu;WU Haiwen;YANG Xiuyan;ZHANG Huaxin(Research Center of Saline and Alkali Land of National Forestry and Grassland Administration,Beijing 100091,China;Tianjin Research Institute of Forestry of Chinese Academy of Forestry,Tianjin 300457,China;The Comprehensive Experimental Center of Chinese Academy of Forestry in Yellow River Delta,Dongying,Shandong 257000,China)

机构地区：[1]国家林业和草原局盐碱地研究中心,北京100091 [2]中国林业科学研究院天津林业科学研究所,天津300457 [3]中国林业科学研究院黄河三角洲综合试验中心,山东东营257000

出　　处：《植物生理学报》2022年第2期247-253,共7页Plant Physiology Journal

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2020MA007);国家自然科学基金(31870663)。

摘　　要：液泡膜上的质子泵在实现液泡多种生理功能中起着关键作用,其中植物液泡膜质子焦磷酸酶(H^(+)-pyrophosphatase,H^(+)-PPase)能够通过水解无机焦磷酸(inorganic pyrophosphate,PPi)以维持胞内PPi稳态。液泡膜H^(+)-PPase将质子转移到液泡中以维持液泡腔的酸度,为其他转运蛋白提供质子驱动力,进而广泛参与植物生长发育和逆境胁迫响应过程。本文综述了近年来植物液泡膜H^(+)-PPase的结构、分类以及功能研究进展,并重点介绍了植物液泡膜H^(+)-PPase在植物抵御盐胁迫中的作用。Proton pumps in the vacuole membrane of plants are vital to vacuole functioning.Proton pyrophosphatase(H^(+)-pyrophosphatase,H^(+)-PPase)is one such pump,which hydrolyzes pyrophosphate(PPi).The enzyme assists in proton transport across the vacuole membrane,balancing vacuolar acidity and generating an electrochemical gradient for other transporters.Thus,vacuolar H^(+)-PPase is widely involved in plant development and responses to stress.This paper summarizes recent research on the structure,classification and function of vacuolar H^(+)-PPase,and focuses on the role of vacuolar H^(+)-PPase in salt tolerance of plants.

关 键 词：液泡膜H^(+)-PPase 逆境胁迫 耐盐性 离子平衡 

分 类 号：Q945.78[生物学—植物学]