摘要
纤维素是植物细胞壁的主要组分,也是生物圈中最丰富的生物质。纤维素由位于质膜的纤维素合酶复合体(CSC)合成。纤维素合酶(CESA)在内质网中合成,在内质网或者高尔基体中组装成完整的CSC,通过囊泡运输转运到质膜,质膜上的CSC可通过网格蛋白介导的内吞作用回收到胞内。因此,CSC胞内运输机制研究是理解纤维素合成和细胞壁形成的重要环节。随着组学研究的深入和活细胞成像技术的发展,与CSC运输有关的新组分和新结构不断被发现和鉴定。本文综述了CSC在细胞内组装和转运的研究进展,以期为该领域研究提供参考。
As a main component of plant cell wall and the most abundant biomass in the biosphere,cellulose is synthesized by the plasma membrane(PM)-localized cellulose synthase complex(CSC).The functional CSC is composed of multiple cellulose synthases(CESA)subunits synthesized at the endoplasmic reticulum(ER),assembled in the ER or Golgi apparatus,subsequently delivered to the PM by vesicles,and eventually recycled via clathrin-mediated endocytosis.With the development of omics and living cell imaging technologies,new components and structures related to CSC trafficking have been identified and characterized.This review updates the research advances of CSC assembly and trafficking,providing reference in cellulose synthesis and cell wall formation.
作者
刘振东
赵淑举
蒋苏
张古玥
LIU Zhendong;ZHAO Shuju;JIANG Su;ZHANG Guyue(School of Life Sciences,Qilu Normal University,Jinan 250200,China;School of Life Sciences,Shandong Normal University,Jinan 250014,China)
出处
《植物生理学报》
CAS
CSCD
北大核心
2020年第9期1757-1764,共8页
Plant Physiology Journal
基金
国家自然科学基金(31571467)
山东省自然科学基金(ZR-2017BC020)。
关键词
细胞壁
纤维素
纤维素合酶复合体
囊泡运输
cell wall
cellulose
cellulose synthase complex
vesicular trafficking
