How to let go: pectin and plant cell adhesion.
How to let go: pectin and plant cell adhesion.
复制标题
DOI：
10.3389/fpls.2015.00523
复制
发表时间：
2015
影响因子：
5.6
通讯作者：
Braybrook SA
中科院分区：
文献类型：
--
作者：
Daher FB;Braybrook SA
一般来说，植物细胞不会迁移。它们相对于它们的邻居保持着固定的地位，通过增长和分化紧密相连。这种连接的媒介，富含果胶的中间层，在细胞分裂期间沉积，并在细胞的整个生命周期中保持，以保护组织的完整性。黏附的维持需要细胞壁的修饰，并依赖于肌动蛋白细胞骨架。有一些发育过程需要细胞分离，如器官脱落、开裂和成熟。在这些情况下，富含果胶的中层必须主动改变，以允许细胞分离，这一过程也需要修改细胞壁。在本综述中，我们将重点介绍果胶及其修饰在细胞黏附和分离中的作用。在果胶凝胶机制方面的最新见解将结合果胶化学的现有知识进行讨论，因为果胶化学与细胞黏附有关。作为一个整体，我们希望开始定义细胞坚持能力背后的物理机制，以及它是如何放手的。
Plant cells do not, in general, migrate. They maintain a fixed position relative to their neighbors, intimately linked through growth and differentiation. The mediator of this connection, the pectin-rich middle lamella, is deposited during cell division and maintained throughout the cell’s life to protect tissue integrity. The maintenance of adhesion requires cell wall modification and is dependent on the actin cytoskeleton. There are developmental processes that require cell separation, such as organ abscission, dehiscence, and ripening. In these instances, the pectin-rich middle lamella must be actively altered to allow cell separation, a process which also requires cell wall modification. In this review, we will focus on the role of pectin and its modification in cell adhesion and separation. Recent insights gained in pectin gel mechanics will be discussed in relation to existing knowledge of pectin chemistry as it relates to cell adhesion. As a whole, we hope to begin defining the physical mechanisms behind a cells’ ability to hang on, and how it lets go.