自体吞噬在植物生长发育中的功能

自体吞噬是一种细胞内自我降解系统,它能将植物细胞内溶物运输至液泡并降解.自体吞噬可划分为内溶物的包裹、运输至液泡、内溶物的降解和降解产物的重新利用几个连续步骤.关于细胞自体吞噬的认识主要来源于酵母、人类、小鼠、果蝇和线虫等生物,以拟南芥等为代表的植物细胞自体吞噬的研究虽然刚刚开始,但也取得了一些标志性的成果,且近十几年来已迅速成为植物研究领域的热点之一.自体吞噬在植物体内具有多种生理和病理作用,如对饥饿的适应、细胞内蛋白质和细胞器的清除、种子中贮藏蛋白的积累、抵制微生物、细胞死亡和胁迫响应等.本文在介绍自体吞噬形成过程的基础上,着重探讨了自体吞噬在植物生长发育中的功能,并对植物中自体吞噬的研究方向进行了展望.

Functions of Autophagy in Plant Growth and Development

Autophagy is an intracellular degradation system in which cytoplasmic components are taken up into the vacuole for degradation in plants.The process of autophagy consists of several sequential steps:sequestration,transport to vacuole,degradation,and utilization of degradation products.Most of autophagy research focused on yeast,human,mouse,drosophila and nematode.While the research of autophagy in higher plants,such as Arabidopsis,just began,some significant results have been achieved,and rapidly become one...