Na^+/H^+逆向转运蛋白与植物耐盐性关系研究进展  

Na^+/H^+Antiporter and Its Relationship with Plant Salt Tolerance

作　　者：陈观平[1] 王慧中[1] 施农农[1] 陈受宜[2] 

机构地区：[1]杭州师范学院生物化学与分子生物学杭州市重点实验室,杭州310036 [2]中国科学院遗传与发育生物学研究所,北京100101

出　　处：《中国生物工程杂志》2006年第5期101-106,共6页China Biotechnology

基　　金：国家自然科学基金资助项目(30370132);浙江省自然科学基金资助项目(302061)

摘　　要：Na+/H+逆向转运蛋白与植物的耐盐性有密切的关系。在高等植物体内,主要存在两种Na+/H+逆向转运蛋白,分别为位于细胞质膜上的逆向转运蛋白SOS1,以及存在于液泡膜上的AtNHX1。质膜Na+/H+逆向转运蛋白主要负责Na+的外排,液泡膜Na+/H+逆向转运蛋白主要负责把Na+区隔化入液泡。过量表达质膜Na+/H+逆向转运蛋白SOS1或液泡膜Na+/H+逆向转运蛋白AtNHX1能够明显提高植物的耐盐性。对植物中Na+/H+逆向转运蛋白及其与植物耐盐性之间的关系最新研究进展作一概述。Na^＋/H^＋ antiporter plays an important role in plant salt toletance. There are two types of Na^＋/H^＋ antiporter in plant. One is the SOS1, which localizes in plasma menbrance, the other is AtNHX1, which localized in tonoplast. The plasma menbrance Na^＋/H^＋ antiporter is responsible for the transport of Na^＋ out of the cell, while the tonoplast Na^＋/H^＋ antiporter is responsible for the transportion of Na^＋ from cytoplasm into vacuole. Therefore, these two types of antiporters were considered as key proteins for plant salt tolerance. Recently, many evidences have shown that overexpression of a plasma menbrance Na^＋/H^＋ antiporter SOS1 and a tonoplast Na^＋/H^＋ antiporter AtNHX1 can increase salt tolerance of plants. The latest progress in the study of Na^＋/H^＋ antiporter and its relationship with plant salt tolerance were reviewed.

关 键 词：转基因植物 耐盐性 NA^+/H^+逆向转运蛋白 

分 类 号：Q948.113[生物学—植物学] Q945.78