植物硝酸盐转运蛋白研究进展

Research progress of nitrate in plant transport mechanism

氮是植物生长发育所必需的大量元素,能构成有机分子并参与植物体内各种代谢活动。硝酸盐作为植物生长发育过程中的主要无机氮源,不仅是植物的营养元素,也可以作为信号分子调控植物的形态建成、生理响应和相关基因的表达,从而应对环境硝酸盐浓度的变化和自身生理状态的需求。硝酸盐转运体参与植物对硝酸盐的吸收和分配。本文结合最新报道,从硝酸盐的吸收、转运和分配以及硝酸盐转运体1.1(NRT1.1)的作用机制等方面系统综述硝酸盐在植物生长发育中的作用机理以及硝酸盐转运体的研究进展,以期为后续研究提供参考。

Nitrogen is an essential macronutrient for plants and nitrogen-containing molecules are involved in many developmental and metabolic events. Nitrate is not only a major form of nitrogen source of plants, but also acts as a signal regulating the architecture and physiology of plants in response to variations in nitrogen supply and the metabolic demand. Nitrate transporters are responsible for the uptake and translocation of nitrate in plants. In this article, we highlight some recent progresses in studying the functions and structure of nitrate transporters, with a particular focus on NITRATE TRANSPORTER 1.1（NRT1.1）, and hope to provide a reference for further research.