《植物生理学报》 2014, 50(12): 1791-1800

植物细胞中钙通道的分布及其在植物抗逆机制中作用的研究进展

贾如, 雷梦琦, 徐佳妮, 鲁瑞琪, 黄萱*

西北大学生命科学学院, 西部资源与现代生物技术省部共建教育部重点实验室, 陕西省生物技术重点实验室, 西安710069

通信作者：黄萱；E-mail: xuanhuang@nwu.edu.cn；Tel: 029-88303484

摘　要：

钙信号是植物生长发育的重要调控因子。当植物受到外界的环境刺激时, 细胞中钙离子浓度会出现特异性变化, 引起一系列保护性生理反应。在细胞膜上存在可以迅速转运钙离子的通道蛋白, 钙通道蛋白是植物对外界刺激做出反应时, 将信号物质从胞外传导到胞内的直接媒介。钙通道按电压依赖性可分为去极化钙离子通道、超极化钙离子通道和非电压依赖性通道3种类型。钙通道在植物细胞中参与了众多的信号转导过程, 本文对植物细胞不同部位存在的钙通道类型及钙离子作为信号物质在植物受到非生物胁迫时产生的应激机制进行了综述。

关键词：植物细胞; 钙通道; 非生物胁迫; 研究进展

收稿：2014-07-21   修定：2014-10-29

资助：国家自然科学基金(31300223)、高等学校博士学科点专项科研基金(20126101120019)、教育部留学回国人员科研启动基金(教外司留[2013]693号)、西部资源生物与现代生物技术教育部重点实验室(西北大学)开放基金、陕西省生物技术省重点实验室开发基金(12JS106)﹑国家自然科学基金基地建设能力提高项目(J1210063)和国家级大学生创新创业训练计划(201310697033)。

Research Progress of Ca²⁺ Channel and the Effect of Ca²⁺ on Plant Resistance Mechanism in Plant Cells

JIA Ru, LEI Meng-Qi, XU Jia-Ni, LU Rui-Qi, HUANG Xuan*

Shaanxi Provincial Key Laboratory of Biotechnology, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an 710069, China

Corresponding author: HUANG Xuan; E-mail: xuanhuang@nwu.edu.cn; Tel: 029-88303484

Abstract:

Calcium (Ca²⁺) signals are core transducers and regulators in many adaptation and developmental processes of plants. It has been found that transient change of Ca²⁺ concentration in plant cells when exposed to environmental stimuli protects plants from environmental stress. Channel proteins which exists on the cell membrane, can quickly transport calcium ion. When plants respond to external stimuli, calcium channel proteins are direct media for signal substance transport from extracellular to intracellular. Three types of Ca²⁺ channels have been identified in the plant cell membrane. They are DACCs (depolarization-activated Ca²⁺-permeable channels), HACCs (hyperpolarization-activated Ca²⁺-permeable channels) and VICCs (voltage-independent Ca²⁺-permeable channels). Ca²⁺ channels take part in many signal-transduction processes in plant cells. In recent years, progress has been made in the researches on Ca²⁺ channels in plant cells. Here, different types of Ca²⁺ channels and Ca²⁺ involved with plant stress resistance were summarized in this paper.

Key words: plant cells; Ca²⁺ channel; abiotic stimulus; research progress