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. 1973 Jan;51(1):150–153. doi: 10.1104/pp.51.1.150

Indoleacetic Acid and Abscisic Acid Antagonism

I. On the Phytochrome-Mediated Attachment of Mung Bean Root Tips on Glass 1

T Tanada a
PMCID: PMC367373  PMID: 16658277

Abstract

The phytochrome-mediated attachment of mung bean (Phaseolus vulgaris L., var. Oklahoma 612) root tips on glass is quickly affected by indoleactic acid and abscisic acid at concentrations of 10 nm or less. Indoleacetic acid induces detachment, whereas abscisic acid induces attachment. Both plant regulators rapidly antagonize the action of the other. None of several cytokinins, gibberellins, and ethylene tested over a wide range in concentration had any effect on either attachment or detachment of root tips. It is postulated that phytochrome could control the endogenous levels of indoleacetic acid and abscisic acid and perhaps other hormones under certain circumstances, that this action is the first process initiated by phytochrome, and that indoleacetic acid and abscisic acid act on the plasmalemma to bring about opposing changes in the surface electric charges of plant cells.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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