Activity of the Asymmetric Isomers of Abscisic Acid in a Rapid Bioassay

Overview

Journal Planta

Specialty Biology

Date 2014 Jan 29

PMID 24469703

Citations 5

Authors

W R Cummins

E Sondheimer

Affiliations

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Abstract

Highly purified preparations of (+)- and (-)-abscisic acid (ABA) were compared for biological activity in a rapid bioassay based on closure of stomates on excised leaves of Hordeum vulgare. The naturally-occurring (+)-enantiomer was markedly more active. It causes speedier closure of the stomates, as measured by changes in leaf temperature. The differences in the activities of the ABA enantiomers are greater than have yet been reported for any other system.

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References

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Cummins W, Kende H, Raschke K . Specificity and reversibility of the rapid stomatal response to abscisic acid. Planta. 2014; 99(4):347-51. DOI: 10.1007/BF00385826. View