植物学报 ›› 2021, Vol. 56 ›› Issue (2): 191-200.DOI: 10.11983/CBB20179

• 专题论坛 • 上一篇    下一篇

植物果胶的生物合成与功能

刘佩佩, 张耿, 李晓娟()   

  1. 北京林业大学生物科学与技术学院, 林木分子设计育种高精尖创新中心, 北京 100083
  • 收稿日期:2020-11-10 接受日期:2021-01-21 出版日期:2021-03-01 发布日期:2021-03-17
  • 通讯作者: 李晓娟
  • 作者简介:*E-mail: lixj@bjfu.edu.cn
  • 基金资助:
    国家自然科学基金(91954202);北京林业大学“杰出青年人才”培育计划(2019JQ03003)

Biosynthesis and Function of Plant Pectin

Peipei Liu, Geng Zhang, Xiaojuan Li()   

  1. Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Science and Technology, Beijing Forestry University, Beijing 100083, China
  • Received:2020-11-10 Accepted:2021-01-21 Online:2021-03-01 Published:2021-03-17
  • Contact: Xiaojuan Li

摘要: 果胶作为植物细胞壁多糖之一, 其结构和功能非常复杂。果胶主要由同型半乳糖醛酸聚糖(HG)、鼠李半乳糖醛酸聚糖I (RGI)和鼠李半乳糖醛酸聚糖II (RGII)组成。果胶类成分在维持细胞壁结构的完整性以及细胞间黏附和信号转导等方面发挥重要作用。研究果胶类成分的结构、分布和功能, 对理解细胞壁高级结构的构建和功能具有重要意义。然而, 3种果胶组分在细胞壁内如何交联形成高级结构并发挥生物学功能, 目前尚不明确。该文重点阐述果胶3种组分(HG、RGI和RGII)的生物合成、功能以及果胶的显微成像, 旨在为植物果胶结构及功能研究提供参考。

关键词: 生物合成, 果胶功能, 显微成像, 果胶组分

Abstract: As one of the plant cell wall polysaccharides, pectin has a very complex structure and function. Pectin is mainly composed by homogalacturonan (HG), rhamngalacturonan I (RGI), rhamngalacturonan II (RGII). Pectin plays an important role in maintaining the integrity of cell wall structure, intercellular adhesion and signal transduction. Therefore, studying the structure, distribution and roles of pectin components is of great significance for understanding the construction and function of cell wall. However, it is not clear how these three components of pectin cross-link to form high structure and perform biological function in the cell wall. This review will focus on the biosynthesis, functions of HG, RGI, RGII as well as the microscopic imaging techniques of pectin, aiming to provide a theoretical basis for the study of the structure and function of plant pectin.

Key words: biosynthesis, function of pectin, microscopic imaging, pectin components