Aquaporins and salt tolerance of higher plants | 水通道蛋白与高等植物的耐盐性
2012
Shi Gongyao, China Agricultural University, Beijing (China) , College of Agronomy and Biotechnology | Wang Yumei, Hubei Academy of Agricultural Sciences, Wuhan (China) , Institute of Cash Crops | Hua Jinping, China Agricultural University, Beijing (China) , College of Agronomy and Biotechnology
chinois. 水通道蛋白是一类特异的、高效转运水及其它小分子底物的整合膜蛋白，在植物中具有丰富的亚型。水通道蛋白通过转录调控、门控机制、聚合调控、重新定位等多种活性调控方式影响细胞膜系统的通透性，参与调节植物的水分吸收和运输。盐害引起渗透胁迫、离子毒害、活性氧胁迫，影响植物生长；水通道蛋白通过多种调控方式，全程参与植物的盐胁迫应答。结合水通道蛋白的功能特征及盐胁迫对高等植物的影响，综述了水通道蛋白在植物盐胁迫应答过程中的功能，并探讨了水通道蛋白研究的重点方向。
Afficher plus [+] Moins [-]anglais. Aquaporins (AQPs) is one of the largest superfamily of channel proteins in plants, where they facilitate the transport of water and/or small neutral solutes or gases. A wide range of regulation properties, such as translational regulation, gating mechanism, heterotetramerization and sub-cellular localization, make aquaporins a large contribution to membrane hydraulic conductance, which plays an important role in controlling water absorbing and transporting in plants. Osmotic stress, ion toxicity, active oxygen and other stresses induced by salinity severely affect plant growth and development. Plant aquaporins are integrated throughout the adaptations to salinity. The functional characteristics of plant aquaporins, injury forms of salt stress on plants, and roles of aquaporins helping the plant in combating salt stress were reviewed. And the study in plant aquaporins and feasibility in improving plant salt tolerance by rational use of aquaporins were proposed.
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