植物盐胁迫适应机制研究进展

综述植物对盐胁迫的适应机制,包括提高抗氧化酶系统的活性、调节激素含量、离子区域化、离子选择性吸收、拒盐作用及合成渗透调节物质.目前植物盐胁迫适应机制的研究取得了一定进展,但在分子水平上仍有待于进一步深入.以现有研究为基础,利用分子生物学研究技术、基因工程技术和突变体筛选是根本解决植物抗盐性问题的重要途径和方法.

Review of Adaptation Mechanism of Plants to Salt Stress

Salinity is a detrimental environmental factor for plant growth and development.The responses of plants to salt stress are rather complicated and determined by multiple physiological and biochemical pathways.This paper reviewed the achievements of studies on adaptation mechanism of plants to salt stress,including induction of antioxidative enzymes detoxifying radicals,adjustment of plant hormones,compartmentalization of ions,selective accumulation or exclusion of ions and synthesis of compatible solutes.So far,adaptation mechanism of plants to salt stress has been understood in some respects,but some problems especially in molecular level still need to be solved using techniques of molecular biology,techniques of gene engineering and mutant filtration.