Indoleacetic Acid and Abscisic Acid Antagonism | Zendy

T. Tanada | Zendy

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Indoleacetic Acid and Abscisic Acid Antagonism

Author(s) -

T. Tanada

Publication year - 1973

Publication title -

plant physiology

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.51.1.154

Subject(s) - abscisic acid , hordeum vulgare , gibberellin , mung bean , ethylene , antagonism , biology , botany , hormone , phytochrome , auxin , biochemistry , horticulture , poaceae , red light , receptor , gene , catalysis

The effects of low concentrations (10 nm or less) of indoleacetic acid and abscisic acid on the phytochrome-mediated attachment of barley root (Hordeum vulgare L., var. Compana) tips on glass have been found to be opposite to those reported for mung bean root tips. Unlike their effects on mung bean root tips, indoleacetic acid causes attachment while abscisic acid causes detachment of barley root tips. Both hormones specifically and rapidly counteract the action of the other. No effect on the photoreversibility of attachment was observed when several gibberellins, cytokinins, and ethylene were added to the assay medium over a wide concentration range.

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