《植物生理学报》 2016, 52(6): 861-867

磷脂酶D在ABA调控气孔运动中的作用

王俊斌^1,2, 丁博¹, 李欣¹, 吴天文¹, 陈小强¹, 谢晓东^1,*

天津农学院¹天津-布里斯托环境变化对农作物影响研究中心, ²基础科学学院, 天津300384

通信作者：谢晓东；E-mail: xiex@tjau.edu.cn

摘　要：

气孔由植物叶片表面一对保卫细胞包围而成, 控制植物光合作用所需CO₂的摄取和蒸腾作用水分的散失。脱落酸(abscisic acid, ABA)通过诱导气孔关闭减少植物水分散失。研究表明, 磷脂酶D (phospholipase D, PLD)及其产物磷脂酸(phosphatidic acid, PA)参与ABA调节的气孔运动信号转导过程。本文主要综述在保卫细胞ABA信号途径中, PLDα1/PA与G蛋白、蛋白磷酸酶2C、活性氧等信号组分的相互作用, 以及PLDδ在气孔运动中的作用。

关键词：磷脂酶D; 气孔运动; 脱落酸; 磷脂酸; 逆境

收稿：2016-04-06   修定：2016-06-08

资助：天津市高等学校科技发展基金计划项目(20130606)、天津市自然科学基金(14JCYBJC30600)、天津市131创新型人才团队和天津市学科领军人才计划。

Roles of phospholipase D in ABA-regulated stomatal movement

WANG Jun-Bin^1,2, DING Bo¹, LI Xin¹, WU Tian-Wen¹, CHEN Xiao-Qiang¹, XIE Xiao-Dong^1,*

¹Tianjin-Bristol Research Center for the Effects of the Environment Change on Crops, ²College of Basic Sciences, Tianjin Agricultural University, Tianjin 300384, China

Corresponding author: XIE Xiao-Dong; E-mail: xiex@tjau.edu.cn

Abstract:

Guard cells form stomatal pores in the leaf epidermis, which enable plants to balance CO₂ uptake for photosynthesis and water loss via transpiration. Abscisic acid (ABA) has been extensively studied because of the clear role of ABA in stomatal closing to limit water loss through transpiration. Phospholipase D (PLD) and its lipid product phosphatidic acid (PA) have been implicated in mediating ABA-regulated stomatal signal transduction. In this review, we focus on our current understanding of a connection between PLD and PA with G protein, protein phosphatase 2C and reactive oxygen species in regulating the ABA response in guard cells. Also, the role of PLDδ in ABA-regulated stomatal movement is summarized.

Key words: phospholipase D; stomatal movement; abscisic acid; phosphatidic acid; stress