植物胞质分裂中成膜体的动态调控及囊泡运输机制  

Mechanisms of phragmoplast dynamics and vesicular trafficking during plant cytokinesis

作　　者：谭小云[1] 贾辛怡 鲍依群[1] TAN Xiaoyun;JIA Xinyi;BAO Yiqun(College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,China)

机构地区：[1]南京农业大学生命科学学院

出　　处：《南京农业大学学报》2020年第2期204-212,共9页Journal of Nanjing Agricultural University

基　　金：国家自然科学基金项目(31770202)

摘　　要：在植物细胞核分裂结束后,细胞中央形成细胞板,实现2个子代细胞的细胞分离。研究植物胞质分裂过程中囊泡运输的分子机制,对于了解植物的形态建成具有重要的意义。来源于高尔基体和反式高尔基体网络的囊泡携带细胞壁物质、蛋白质和脂质运向新生细胞板位置,互相融合形成早期细胞板。随后早期细胞板向两端扩张并与母细胞壁融合,经过修饰后形成成熟细胞板。以微管骨架为主要成分的成膜体,作为细胞板囊泡运输的轨道和细胞板组装的“脚手架”参与了这一过程。本文主要综述了植物细胞的胞质分裂过程中成膜体的形成及其动态变化过程以及细胞板囊泡拴系和融合的分子机制,同时对相关研究进行了展望。After completion of nuclear division,a cell plate formed in a plant cell separates the cytoplasm of two daughter cells.Investigation of the molecular mechanisms that control vesicle trafficking during cytokinesis is critical to understand plant cell division and morphogenesis.The cell plate is formed and extended by fusion of Golgi-and TGN-derived vesicles,containing proteins,polysaccharide and lipids.The phragmoplast,which acts as a scaffold for vesicle trafficking and fusion,is also involved in this process.This review mainly focuses on the dynamics of the phragmoplast,and vesicles tethering and fusion during plant cytokinesis.Future studies in this area are also proposed.

关 键 词：植物 胞质分裂 细胞板 成膜体 囊泡运输 

分 类 号：Q734[生物学—分子生物学]