《植物生理学报》 2011, 47(1): 18-26

植物微丝骨架动态变化的调节

陈琼¹, 黄善金², 于荣^1,*

1 首都师范大学生命科学学院, 北京 100048; 2 中国科学院植物研究所光合作用与环境分子生理学重点实验室, 北京 100049

通信作者：于荣；E-mail: yurong@mail.cun.edu.cn；Tel: 010-68901692

摘　要：

由球形肌动蛋白聚合而成的微丝骨架, 又称肌动蛋白纤维, 它在细胞运动、细胞形态建成以及物质运输等诸多生命 活动中发挥重要作用。细胞内微丝的解聚和聚合动态特性是微丝骨架行使功能的重要基础, 并受到如微丝结合蛋白、金属 离子、小G蛋白等各种因素的严格控制。植物细胞微丝骨架的研究虽然晚于动物细胞, 但也取得了飞速发展。本文对植物 细胞内微丝骨架动态变化的作用机制及一些主要调节因子的最新研究进展做一介绍。

关键词：微丝动态变化; 微丝结合蛋白; Ca2+; 小G蛋白; 肌醇磷脂

收稿：2010-10-22   修定：2010-12-28

资助：国家自然科学基金(30870137)。

Regulation of Plant Actin Dynamics

CHEN Qiong¹, HUANG Shan-Jin², YU Rong^1,*

¹College of Life Sciences, Capital Normal University, Beijing 100048, China; ²Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: YU Rong; E-mail: yurong@mail.cun.edu.cn; Tel: 010-68901692

Abstract:

The actin cytoskeleton (microfilament, MF), also known as F-actin, is a filamentous polymer built from globular monomers called G-actin. It plays an important role in cell motility, cell morphogenesis, intracellular transport and many other life activities. It was found that the depolymerization and polymerization of actin dynamics could very well contribute to these cellular functions, and were strictly regulated by actin-binding proteins, metal ions, small G proteins, etc. It is now well agreed that following the numerous studies of animal microfilaments, the understanding of plant actin dynamics also has made a rapid progress. In this review, the regulating mechanism of plant actin dynamics would be discussed thoroughly.

Key words: actin dynamics; actin binding proteins; calcium ion; small G protein; phosphoinositide