摘要
在高浓度NaCl胁迫下,土壤中Na+和Cl-浓度过高将导致植物机体出现渗透压改变和离子中毒的现象,致使植物代谢异常.此外,盐胁迫还影响植物的Ca2+和K+等矿质元素的吸收.植物为抵御高浓度盐对自身的毒害作用,通过膜逆向转运蛋白将细胞内过多的Na+向外排出细胞和将Na+运入液泡区隔化.对膜逆向转运蛋白在Na+和Cl-的吸收、外排和离子区隔化以及膜逆向转运蛋白在植物抗盐性中的重要作用进行了综述.
Abstract
Under high-concentration NaCl stress,high Na+ and Cl-concentrations in the soil lead to the change of osmotic pressure and ion poisoning in plant organism.Thus,plant metabolic abnormalities appear.In addition, salt stress also affects the absorption of plant Ca2+ , K+ and other mineral elements.To defense the toxic action of high salt concentration,excessive Na + is discharged outside the cells by membrane reverse transporters, and Na + is transported into the vacuole segregation.In this research,we reviewed the important roles of membrane reverse transporters in the Na+ and Cl-absorption and excretion,ion compartmentation, and plant salt resistance.
国家科技期刊平台
NSTL
维普
万方数据