植物Na+,K+/H+反向转运体：pH平衡与囊泡运输

doi:10.13560/j.cnki.biotech.bull.1985.2019-0794

摘要/Abstract

摘要： 细胞内pH和囊泡运输是影响细胞功能的重要影响因子,也是决定细胞是否死亡的重要因素。植物Na⁺,K⁺/H⁺反向转运体是位于细胞膜结构上的跨膜反向转运蛋白,介导Na⁺、K⁺与质子（H⁺）的跨膜反向转运,影响胞内pH的动态平衡。研究表明,NHX缺失造成细胞pH失衡的同时,将影响囊泡运输,从而对生长发育产生不利影响。主要对植物NHX在pH调节、囊泡运输中的功能进展进行了概述,并对其关系进行探讨。

关键词: Na⁺, K⁺/H⁺反向转运体, pH平衡, 囊泡运输

Abstract: Intracellular pH and vesicle trafficking are important factors that affect cell function and determine whether or not cell is death. The Na⁺,K⁺/H⁺ antiporters（NHX）in plant are transmembrane antiporter proteins located in the membrane structure of the cell,and they mediate the transfer of the Na⁺ or K⁺ across a membrane in exchange for protons（H⁺）and thus affect the cellular pH homeostasis. Studies have also shown that the absence of NHX causes an imbalance in the pH of cells and affects vesicle trafficking,which adversely impact the growth and development of plants. In this paper,the function progress of plant NHX in pH regulation and vesicle trafficking is summarized and their relationships are discussed.

Key words: Na⁺, K⁺/H⁺ antiporter, pH homeostasis, vesicle trafficking

王立光, 叶春雷, 陈军, 朱天地, 李静雯. 植物Na⁺,K⁺/H⁺反向转运体：pH平衡与囊泡运输[J]. 生物技术通报, 2020, 36(4): 151-158.

WANG Li-guang, YE Chun-lei, CHEN Jun, ZHU Tian-di, LI Jing-wen. Na⁺,K⁺/H⁺ Antiporter in Plant：pH Homeostasis and Vesicle Trafficking[J]. Biotechnology Bulletin, 2020, 36(4): 151-158.

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