Osmoregulation of leaf motor cells

被引：93

作者：

Moran, Nava ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, RH Smith Inst Plant Sci & Genet Agr, Fac Agr Food & Environm Qual Sci, IL-76100 Rehovot, Israel

来源：

FEBS LETTERS | 2007年 / 581卷 / 12期

关键词：

pulvinus; leaf movement; stretch-activated channels; potassium channels; aquaporins; biological clock;

D O I：

10.1016/j.febslet.2007.04.002

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Osmotic Motors - the best-documented explanation for plant leaf movements - frequently reside in specialized motor leaf organs, pulvini. The movements result from dissimilar volume and turgor changes in two oppositely positioned parts of the pulvinus. This Osmotic Motor is powered by a plasma membrane proton ATPase, which drives KCl fluxes and, consequently, water, across the pulvinus into swelling cells and out of shrinking cells. Light signals and signals from the endogenous biological clock converge on the channels through which these fluxes occur. These channels and their regulatory pathways in the pulvinus are the topic of this review. (c) 2007 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

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页码：2337 / 2347

页数：11

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