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Detection and Preliminary Identification of Endogenous Antitranspirants in Water-stressed Sorghum Plants

Overview
Journal Planta
Specialty Biology
Date 2014 Jan 25
PMID 24458460
Citations 4
Authors
A B Ogunkanmi
A R Wellbern
T A Mansfield
Affiliations
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Abstract

Sorghum plants that had been subjected to different degrees of water stress were examined for the occurrence of endogenous compounds capable of inducing stomatal closure, i.e. "antitranspirants". Acidic extracts contained increased amounts of abscisic acid (ABA) as the amount of stress increased, but another highly active compound easily distinguished from ABA also accumulated. This compound, also found in neutral extracts, was probably all trans-farnesol, an isoprenoid alcohol which, like ABA, is a sesquiterpenoid. Highly dilute solutions of "commercial" farnesol induced stomatal closure when applied to isolated epidermis of Commelina.

Citing Articles

All-trans-farnesol: a naturally occurring antitranspirant?.

Wellburn A, Ogunkanmi A, Fenton R, Mansfield T Planta. 2014; 120(3):255-63.

PMID: 24442700 DOI: 10.1007/BF00390293.

The effect of vomifoliol on stomatal aperture.

STUART K, Coke L Planta. 2014; 122(3):307-10.

PMID: 24436000 DOI: 10.1007/BF00385281.

Levels of short-chain fatty acids and of abscisic acid in water-stressed and non-stressed leaves and their effects on stomata in epidermal strips and excised leaves.

Willmer C, Don R, Parker W Planta. 2014; 139(3):281-7.

PMID: 24414272 DOI: 10.1007/BF00388642.

Guard cells of Commelina communis L. do not respond metabolically to osmotic stress in isolated epidermis: Implications for stomatal responses to drought and humidity.

Grantz D, Schwartz A Planta. 2013; 174(2):166-73.

PMID: 24221472 DOI: 10.1007/BF00394768.

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