Li Shanwei, Sun Tiantian, Ren Haiyun
Key Laboratory of Cell Proliferation and Regulation Biology of Ministry of Education, College of Life Science, Beijing Normal University Beijing, China.
Front Plant Sci. 2015 Apr 27;6:282. doi: 10.3389/fpls.2015.00282. eCollection 2015.
In higher plants, microtubule (MT)-based, and actin filament (AF)-based structures play important roles in mitosis and cytokinesis. Besides the mitotic spindle, the evolution of a band comprising cortical MTs and AFs, namely, the preprophase band (PPB), is evident in plant cells. This band forecasts a specific division plane before the initiation of mitosis. During cytokinesis, another plant-specific cytoskeletal structure called the phragmoplast guides vesicles in the creation of a new cell wall. In addition, a number of cytoskeleton-associated proteins are reportedly involved in the formation and function of the PPB, mitotic spindle, and phragmoplast. This review summarizes current knowledge on the cytoskeleton-associated proteins that mediate the cytoskeletal arrays during mitosis and cytokinesis in plant cells and discusses the interaction between MTs and AFs involved in mitosis and cytokinesis.
在高等植物中,基于微管(MT)和基于肌动蛋白丝(AF)的结构在有丝分裂和胞质分裂中发挥着重要作用。除了有丝分裂纺锤体,植物细胞中还明显存在由皮层微管和肌动蛋白丝组成的带,即前期带(PPB)的进化。这条带在有丝分裂开始前预测特定的分裂平面。在胞质分裂过程中,另一种植物特有的细胞骨架结构,称为成膜体,引导小泡形成新的细胞壁。此外,据报道,一些细胞骨架相关蛋白参与前期带、有丝分裂纺锤体和成膜体的形成和功能。本综述总结了目前关于在植物细胞有丝分裂和胞质分裂过程中介导细胞骨架阵列的细胞骨架相关蛋白的知识,并讨论了有丝分裂和胞质分裂中微管和肌动蛋白丝之间的相互作用。