《植物生理学报》 2023, 59(2): 267-280

植物PEPC在非生物胁迫响应中的作用

叶志谦，黄腾波，黄健子^*

深圳大学生命与海洋科学学院, 广东省植物表观遗传学重点实验室, 广东深圳518055

通信作者：黄健子；E-mail: biohjz@szu.edu.cn

摘　要：

摘要: 磷酸烯醇式丙酮酸羧化酶(phosphoenolpyruvate carboxylase, PEPC)是一种广泛分布于高等植物、藻类、大多数古生菌和非光合细菌的细胞质酶, 可催化磷酸烯醇式丙酮酸羧化生成草酰乙酸。PEPC可参与植物多种生理生化过程。早期对于植物PEPC响应非生物胁迫的研究集中在基因表达和酶活性水平,近年来的研究工作则逐渐转向关注基因表达调控、基因功能及其应用。本文归纳了植物PEPC的基本结构、分类及主要生理生化功能, 并系统总结了PEPC响应干旱、盐碱、淹涝、极端温度、重金属及营养元素缺乏等非生物胁迫方面的研究进展, 以期为有效利用PEPC基因功能进行作物遗传改良提供理论依据。

关键词：PEPC; 基因表达调控; 基因功能; 非生物胁迫

收稿：2022-06-21   修定：2022-09-26

资助：广东特支计划科技创新青年拔尖人才(2019TQ05N940)和广东省基础与应用基础研究基金(2021A1515011035)。

The role of plant PEPC in response to abiotic stress

YE Zhiqian, HUANG Tengbo, HUANG Jianzi^*

Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, Guangdong 518055, China

Corresponding author: HUANG Jianzi; E-mail: biohjz@szu.edu.cn

Abstract:

Phosphoenolpyruvate carboxylase (PEPC) is a cytoplasmic enzyme widely existing in higher plants, algae, most archaea, and non-photosynthetic bacteria. This enzyme catalyzes the carboxylation of phosphoenolpyruvate into oxaloacetic acid. In plants, PEPC can participate in various physiological and biochemical processes. The early studies on the involvement of PEPC in plant response to abiotic stress mainly focus on gene expression level and enzymatic activity, while the recent researches pay more and more attention to the regulation of gene expression, the detailed gene function and its agricultural application. This review summarizes basic structure, main category, and physiological and biochemical function of plant PEPC. Moreover, we systematically overview the roles of plant PEPCs in response to various abiotic stresses, including drought, high salinity, water logging, extreme temperature, heavy metal, and nutrient deficiency, in prospect of providing a theoretical basis for the application of PEPC genes in crop genetic improvement.

Key words: PEPC; gene expression regulation; gene function; abiotic stress