盐胁迫下植物体内保持高K^+/Na^+比率的机制  

Mechanism of maintaining high K^+/Na^+ ratios under salt stress in plant

作　　者：赵春梅[1,2] 崔继哲[2] 金荣荣[1] 

机构地区：[1]哈尔滨市农业科学院,哈尔滨150070 [2]哈尔滨师范大学生命科学与技术学院,哈尔滨150025

出　　处：《东北农业大学学报》2012年第7期155-160,共6页Journal of Northeast Agricultural University

基　　金：黑龙江省科技攻关计划项目(GA06B103-7)

摘　　要：维持细胞内高K+/Na+比率是植物耐盐的关键因素。近年来已经鉴定与保持K+/Na+比率相关的基因和转运蛋白。这些基因和蛋白在K+与Na+的吸收、转运和排出过程起重要作用,在维持K+/Na+方面起调控功能。文章对植物体在盐胁迫下保持高K+/Na+比率的机制作以综述。Maintenance of high K＋/Na＋ ratios is a key feature of salt tolerance in plant.A lot of genes,transporters and ion channels related to maintaining K＋/Na＋ ratios have been found and identified in recent years.These genes and proteins play significant roles in uptake of K＋ and Na＋,and some of these genes and proteins regulate the K＋/Na＋ ratios under salt stress.This review discussed the mechanism of maintaining high K＋/Na＋ ratios in plant under salt stress.

关 键 词：盐胁迫 K+/Na+比率 转运蛋白 离子通道 

分 类 号：Q493.8[生物学—生理学]