《植物生理学报》 2011, 47(10): 925-935

植物细胞壁松弛因子

赵运军, 李来庚*

中国科学院上海生命科学研究院植物生理生态研究所合成生物学重点实验室, 上海200032

通信作者：李来庚；E-mail: lgli@sibs.ac.cn；Tel: 021-54924151

摘　要：

植物细胞壁的松弛是细胞伸长必需的一个生理过程, 发生于植物生长发育的各个阶段。研究发现参与细胞壁松弛的 因子有多种, 主要包括膨胀素(expansin)、木葡聚糖内转糖苷酶/水解酶(XTH)、糖基水解酶和羟基自由基(•OH)四大类。本 文主要对这些细胞壁松弛因子的结构特征、作用机制及其在植物生理过程中的作用等方面的研究进展进行综述。

关键词：细胞壁松弛; 膨胀素; 木葡聚糖内转糖苷酶/水解酶; 糖基水解酶; 羟基自由基

收稿：2011-08-22   修定：2011-09-05

资助：国家杰出青年基金(30725025)和中国科学院百人计划(KSCX2-YW-N-070)。

Plant Cell Wall Loosening Factors

ZHAO Yun-Jun, LI Lai-Geng*

Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China

Corresponding author: LI Lai-Geng; E-mail: lgli@sibs.ac.cn; Tel: 021-54924151

Abstract:

Plant cell wall loosening is a necessary physiological process during cell expansion throughout the entire growth and development of plants. Several types of factors including expansin, xyloglucan endotransglucosylase/hydrolase (XTH), glycoside hydrolase and hydroxyl radical (·OH), have been known for functioning in this process. This review summarizes recent studies of the loosening factors in regard to their structures and characters, working mechanisms and effects on plants.

Key words: cell wall loosening; expansin; xyloglucan endotransglucosylase/hydrolase (XTH); glycoside hydrolase; hydroxyl radical