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1978•Journal of Experimental BotanyRequires access

Functional Epidermal Cells are Necessary for Abscisic Acid Effects on Guard Cells

Chanan Itai, Hans Meidner

Open publisher page 26 citations

Abstract

Experimental results are presented which show that abscisic acid (ABA) causes stomatal closure only if the stomatal complex is adjacent to live epidermal cells. It is further shown that ABA acts by affecting solute fluxes into and out of epidermal and guard cells. Live epidermal cells function as recipients for solutes and thereby assist their movement out of the guard cells. ABA-mediated solute leakage from guard cells alone does not suffice to cause stomatal closure within one hour.

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What this paper is about

Experimental results are presented which show that abscisic acid (ABA) causes stomatal closure only if the stomatal complex is adjacent to live epidermal cells. It is further shown that ABA acts by affecting solute fluxes into and out of epidermal and guard cells. Live epidermal cells function as recipients for solutes and thereby assist their movement out of the guard cells. ABA-mediated solute leakage from guard cells alone does not suffice to cause stomatal closure within one hour.

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OpenAlex reports 26 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Experimental results are presented which show that abscisic acid (ABA) causes stomatal closure only if the stomatal complex is adjacent to live epidermal cells. It is further shown that ABA acts by affecting solute fluxes into and out of epidermal and guard cells. Live epidermal cells function as recipients for solutes and thereby assist their movement out of the guard cells. ABA-mediated solute leakage from guard cells alone does not suffice to cause stomatal closure within one hour.

Key concepts: Guard cell, Abscisic acid, Cell biology, Chemistry, Biology, Neuroscience, Botany, Biochemistry

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