Ca^(2+)-ATPase参与植物耐盐性调控的研究进展  

Research Progress of Ca^(2+)-ATPase Involved in Regulation of Plant Salt Tolerance

作　　者：马秀英 李金克 周晓阳 陈少良[2] MA Xiuying;LI Jinke;ZHOU Xiaoyang;CHEN Shaoliang(College of Life Science and Biological Engineering,Jining University,Qufu 273155;Beijing Advanced Innovation Center for Tree Breeding by Molecular Design,College of Biological Sciences and Technology,Beijing Forestry University,Beijing 100083;Laboratory and Equipment Management Office,Beijing Forestry University,Beijing 100083)

机构地区：[1]济宁学院生命科学与工程学院,曲阜273155 [2]北京林木分子设计育种高精尖创新中心,北京林业大学生物科学与技术学院,北京100083 [3]北京林业大学实验室与设备管理处,北京100083

出　　处：《植物研究》2024年第5期641-654,共14页Bulletin of Botanical Research

基　　金：国家自然科学基金项目(32071730,31770643,31570587);北京市自然科学基金项目(6182030)。

摘　　要：盐胁迫下细胞质Ca^(2+)浓度升高,细胞会激活Ca^(2+)调节的靶酶或者与Ca^(2+)高度亲和的受体蛋白,其中,与Ca^(2+)高度亲和的受体蛋白中,植物钙泵(Ca^(2+)-ATPase)是P型ATP酶,包含内质网Ca^(2+)-ATPases与质膜Ca^(2+)-ATPas‐es,通过主动运输将Ca^(2+)从细胞质转移到质外体或细胞器。大量研究表明,植物的耐盐性在很大程度上与其维持钙泵即Ca^(2+)-ATPase活性的能力有关。多种植物Ca^(2+)-ATPase对盐胁迫表现出敏感性,并受到外源Ca^(2+)的保护,表明外源钙处理与Ca^(2+)-ATPase活性可能在盐胁迫下的细胞内钙稳态和信号转导中起重要作用。该研究概述了植物Ca^(2+)-ATPase类型、结构与性质,亚细胞定位Ca^(2+)-ATPase及外源钙与亚细胞定位Ca^(2+)-ATPase参与植物耐盐调控研究进展,重点对质膜、液泡膜、核膜、内质网及高尔基体Ca^(2+)-ATPases参与植物耐盐调控的研究进展进行了综述,并提出展望。该研究为了解植物耐盐性生理及分子机制提供帮助,同时为作物耐盐栽培提供新思路。When cytosolic Ca^(2+)concentration is increased under salt stress,cells would activate Ca^(2+)-regulated target enzymes or induce Ca^(2+)bind to Ca^(2+)high-affinity receptor proteins.Among them,plant Ca^(2+)-ATPases are P-type ATPases,including endoplasmic reticulum Ca^(2+)-ATPase(ECAs)and plasma membrane Ca^(2+)-ATPase(ACAs);they are able to translocate Ca^(2+)from the cytosol to apoplast or compartmentalize Ca^(2+)in organelles.Numerous studies have shown that salt tolerance of plants is largely related to their ability to maintain the activities of calcium pump,namely Ca^(2+)-ATPases.The activities of Ca^(2+)-ATPases in various plant species were sensitive to salt stress;exogenous Ca^(2+)application can alleviate cell injury by salt stress,suggesting that exogenous calcium-mediated Ca^(2+)-ATPase might play an important role in intracellular calcium homeostasis and signal transduction.Therefore,this review summarized the types,structures and properties of plant Ca^(2+)-ATPase,and the involvement of Ca^(2+)-ATPase of subcellular localization in plant response to salt tolerance and the research progress of exogenous calcium and Ca^(2+)-ATPase in regulation on plant salt tolerance.It emphasized potential roles of Ca^(2+)-ATPases of plant plasma membrane,tonoplast,nuclear membrane,endoplasmic reticulum and Golgi in regulation of salt tolerance in plants,and presented an outlook in the field.This work provided help for a better understanding of physiological and molecular mechanisms of plant salt tolerance and provided new ideas for crop salt-tolerance cultivation.

关 键 词：Ca^(2+)-ATPase 质膜 液泡膜 内质网 核膜 盐胁迫 

分 类 号：Q945[生物学—植物学]