植物细胞膜受体胞吞及其功能的研究进展

细胞膜受体蛋白在细胞应对外部环境变化以及感知相邻细胞信号过程中发挥重要作用.当细胞膜受体蛋白受到配体刺激之后,依赖不同的胞吞机制,形成了两种主要的胞吞途径:网格蛋白介导的胞吞和不依赖网格蛋白介导的胞吞.通过不同胞吞途径进入细胞的细胞膜受体蛋白,会在不同内涵体间转运,从而引发不同的内涵体信号,然后一部分膜受体蛋白重新循环到细胞膜,另一部分则转运到溶酶体或液泡进行降解,最终影响植物的生长发育和免疫等过程.由于膜受体介导的胞吞作用和内涵体信号受到越来越多的关注,因此本文对细胞膜受体介导的胞吞机制及其在植物生长发育和抗病中的作用进行了综述,以期为今后系统开展其功能研究提供理论依据.

Recent advances on the endocytosis of plasma membrane receptor and its functions in plants

Plasma membrane receptors play vital roles in signal exchange between cells and environment or cells and cells. Special identification of ligands and receptors induce two distinct endocytic pathways depending on various mechanisms. Then the receptors accumulate on diverse endosomes for endosomal signaling. At last, the plasma membrane receptors recycle to the cell surface or go to the lysosome for degradation. More and more studies indicate that receptor mediated endocytosis plays important roles in plant development and plant immunity. Therefore, this review focuses on the mechanisms of receptor mediated endocytosis in plant cells, with special emphasis on recent progress in biological functions, which will provide valuable information for further studies on RME in plants.