《植物生理学报》 2017, 53(2): 174-184

膨胀素对根系建成影响的研究进展

李飞¹, 李凤兰¹, 姚树宽¹, 董佳敏¹, 蔡振学¹, 周晶¹, 赵巧芩¹, 徐永清^1,*, 胡宝忠^1,2,*

¹东北农业大学生命科学学院, 哈尔滨150030; ²哈尔滨学院, 哈尔滨150086

通信作者：徐永清；E-mail: xuyongqing@neau.edu.cn; bzhu@neau.edu.cn

摘　要：

膨胀素(expansin)又称扩张素或扩张蛋白, 是诱导植物细胞壁松弛的一种蛋白质, 亦是细胞壁松弛与伸展的调节剂, 对植物根系形态的建成有一定的调控作用。本文主要概述了膨胀素基因家族的发现、结构、进化及其作用机制, 从植物根系顶端分生组织、侧根及根毛的发育等方面阐明了膨胀素对根系生长的调节作用, 以及有关影响膨胀素在根中表达调控因素的研究进展, 为深入了解膨胀素对植物根系建成及其调控机制的研究提供理论依据。

关键词：植物根系; 膨胀素; 根系发育; 调控因素

收稿：2016-10-17   修定：2016-12-21

资助：国家基础科学人才培养基金(J1210069)和中俄国际合作项目(2013DFR30270)。

Research progress of the effect of expansions on the root formation

LI Fei¹, LI Feng-Lan¹, YAO Shu-Kuan¹, DONG Jia-Min¹, CAI Zhen-Xue¹, ZHOU Jing¹, ZHAO Qiao-Qin¹, XU Yong-Qing^1,*, HU Bao-Zhong^1,2,*

¹College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; ²Harbin University, Harbin 150086, China

Corresponding author: XU Yong-Qing; E-mail: xuyongqing@neau.edu.cn; bzhu@neau.edu.cn

Abstract:

Expansin, also known as expansion or expansion protein, is a kind of protein which can induce the cell wall loosening and modulate the cell wall expansion, playing an important role in root morphogenesis. This study provides an overview of the discovery, structure, evolution and functional mechanism of expansin gene family and illustrates the regulation role of expansin in the growth of root system from root apical meristem, lateral root and root hair development, and the research progress of the factors influencing the expression of expansin in root, providing a theoretical basis for understanding the effect of expansion on plant roots formation and its regulatory mechanism.

Key words: plant roots; expansion; root development; regulatory aspect