Lee Yong Jik, Yang Zhenbiao
Department of Botany and Plant Sciences and Center for Plant Cell Biology, Institute for Integrative Genome Biology, University of California-Riverside, Riverside, CA 92521, United States.
Curr Opin Plant Biol. 2008 Dec;11(6):662-71. doi: 10.1016/j.pbi.2008.10.002. Epub 2008 Oct 30.
Signaling molecules, such as ROP/RAC GTPases and their regulators, reactive oxygen species (ROS) and phospholipids, play pivotal roles in the control of tip growth in pollen tubes and root hairs. They are often localized to the apical growing region of these cells, where their functions are tightly interconnected with cytoskeletal rearrangement and polar vesicle trafficking, which participate in tip growth as well as affect the generation and maintenance of the apical growing region. Recent advances in our understanding of the interface between these cellular activities and signaling in tip growth will be discussed.
信号分子，如ROP/RAC GTP酶及其调节剂、活性氧（ROS）和磷脂，在花粉管和根毛的顶端生长控制中起关键作用。它们通常定位于这些细胞的顶端生长区域，在那里它们的功能与细胞骨架重排和极性囊泡运输紧密相连，而细胞骨架重排和极性囊泡运输既参与顶端生长，也影响顶端生长区域的形成和维持。本文将讨论我们对这些细胞活动与顶端生长信号之间界面的最新认识进展。
