盐胁迫下植物离子转运的分子生物学研究  

Molecular biological research on the transport of ions in plants under salt stress

作　　者：高永生[1] 王锁民[1] 宫海军[1] 赵志光[1] 张承烈[1] 

机构地区：[1]兰州大学生命科学学院兰州大学草地农业科技学院,甘肃兰州730000

出　　处：《草业学报》2003年第5期18-25,共8页Acta Prataculturae Sinica

基　　金：国家重点基础研究专项(G1999011700);国家自然科学基金(30270947);科技部重大基础研究前期专项(2002CCC01600)资助。

摘　　要：植物细胞质是生理生化反应的集中部位,植物的正常生长发育需要维持细胞内离子的相对平衡状态,而细胞质保持相对恒定的K+/Na+的能力是植物盐适应性的重要决定因素之一。各种离子的相对平衡是许多生理过程的综合结果,包括离子的内流、外流、外排和区域化等。离子的转运是由位于膜上的转运蛋白完成的,并受到多基因的调控。离子转运蛋白的分子生物学研究近年来发展很快,本研究将介绍有关方面的研究进展。Most plant physiological and biochemical reactions occur in the cytoplasm. The equilibrium of various ions in plant cells plays an important role in normal plant growth and development. The ability of the cytoplasm to maintain a relatively constant K+/Na+ ratio is a key determinant of a plants adaptability to salt exposure. The relative balance of various ions is the result of a lot of integrated physiological processes, including the inflow, outflow, exclusion and compartmentalization of ions. Ion transport is accomplished through transport proteins on the plasma membrane and is under polygene control. Rapid development in biological research has been made regarding ion transport molecules in recent years. This article introduces progress in the research of related aspects.

关 键 词：盐胁迫 离子转运 离子平衡 耐盐性 转运蛋白 盐生植物 逆向转运 

分 类 号：Q945[生物学—植物学]