植物次生细胞壁加厚过程的转录调控

朱晓博, 张贵粉, 陈鹏*
华中农业大学植物科学技术学院, 生物质与生物能源研究中心, 武汉430070

通信作者:陈;E-mail: chenpeng@mail.hzau.edu.cn

摘 要:

双子叶植物次生木质部中的导管和管胞、单子叶植物初生木质部的导管对于植物体的水分运输至关重要。厚壁组织对植物的机械强度起到主要的支撑作用, 其中双子叶植物是由皮层的厚角组织和维管束提供, 单子叶植物由机械组织和维管束提供。这些行使特殊功能的组织细胞都能发生次生细胞壁加厚, 加厚的细胞类型有管状细胞、纤维细胞、厚壁细胞等。次生细胞壁合成是一个复杂的生物学过程, 本文围绕次生细胞壁加厚发生的主要组织——维管束厚壁组织, 总结了调控次生壁加厚的转录因子, 以便读者能够更加深入地理解复杂的次生壁调控网络。

关键词:维管束; 次生细胞壁; 转录因子; 调控网络

收稿:2017-06-05   修定:2017-09-13

资助:中央高校基本科研业务费专项资金项目(52902-0900202688)。

Research progress in the transcriptional regulation of secondary cell wall thickening

ZHU Xiao-Bo, ZHANG Gui-Fen, CHEN Peng*
Biomass and Bioenergy Research Center, Faculty of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China

Corresponding author: CHEN Peng; E-mail: chenpeng@mail.hzau.edu.cn

Abstract:

Vascular bundles in dicot and monocot plants hold vessels that are essential for plants to transport water. Similar to the xylem vessel cells, sclerenchyma and collenchyma cells, which provide mechanical support for the plant body, also undergo substantial secondary cell wall thickening. Biosynthesis of the secondary cell wall is a complex process that needs to be coordinated with plant growth. This review summarizes recent findings for the transcriptional regulation of secondary cell wall biosynthesis to facilitate a comprehensive understanding of how the secondary cell wall thickening is regulated during vascular tissue development.

Key words: vascular bundle; secondary cell wall; transcription factor; regulatory network

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