HKT1在植物耐盐机制中的研究进展  

Advances in HKT1 Study on the Mechanism of Salt Tolerance in Plants

作　　者：张永兰 解莉楠[1] ZHANG Yong-lan;XIE Li-nan(College of Life Science,Northeast Forestry University/Key Laboratory of Saline-alkali Vegetation Ecology Restoration,Ministry of Education,Harbin 150040)

机构地区：[1]东北林业大学生命科学学院,东北盐碱植被恢复与重建教育部重点实验室,哈尔滨150040

出　　处：《生物技术通报》2021年第6期213-224,共12页Biotechnology Bulletin

基　　金：国家自然科学基金项目(31801444)。

摘　　要：土地盐碱化是导致作物产量降低的重要影响因素之一。在盐胁迫下,植物进化出一系列应对盐胁迫的策略,其中,离子转运蛋白在植物应对盐胁迫的过程中发挥着举足轻重的作用。HKT1转运蛋白是一类具有转运Na^(+)功能的离子转运蛋白,主要定位在维管束组织附近,广泛存在于单子叶植物和双子叶植物中,参与植物体内Na^(+)的长距离运输,调节植物中Na^(+)浓度,有助于维持植物体内的离子平衡。分别讨论了不同植物中HKT1蛋白的功能以及相应的调控过程,总结了HKT1参与Na^(+)长距离运输的作用模型。通过综合近年来对HKT1的研究,合理运用分子育种等手段,以期为增加农作物的耐盐胁迫能力,提高农作物的质量和产量奠定理论基础。Soil salinization is an important factor affecting the reduction of crop yield.Under salt stress,plants have evolved a series of strategies to deal with salt.In these strategies,ion transporters play a pivotal role in plant response to salt stress.HKT1 transporters are a kind of ion transporters with the function of transporting Na^(+),which are mainly located near vascular bundles and widely found in monocotyledons and dicotyledons.In plants,they participate in the long-distance transport of Na^(+),regulate the concentration of Na^(+),and help to maintain ion balance.In this paper,the functions and corresponding regulatory processes of HKT1 proteins in different plants are discussed,and the different action models of HKT1 participating in Na^(+) long-distance transportation are summarized.By making a synthesis of the research on HKT1 in recent years and rational use of molecular breeding,it lays a theoretical foundation for increasing the salt stress tolerance of crops and improving the quality and yield of crops.

关 键 词：盐胁迫 HKT1 HKT1的调控 钠离子 长距离运输 

分 类 号：Q945.78[生物学—植物学]