Studies on 3-indoleacetic acid metabolism. VII. Metabolism of radioactive 3-indoleacetic acid by pea roots
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چکیده
منابع مشابه
Studies on 3-Indoleacetic Acid Metabolism. VI. 3-Indoleacetic Acid Uptake and Metabolism by Pea Roots and Epicotyls.
For several years we have studied the metabolism of applied indoleacetic acid (IAA) by plant tissues to determine whether growth stimulation or inhibition by IAA could be in any way related to its metabolism. So far we have been chiefly concerned with IAA metabolism by pea epicotyls, and in previous publications (2, 3, 4) have suggested that the toxic action of IAA might be related to the accum...
متن کاملStudies on 3-Indoleacetic Acid Metabolism. V. Effect of Calcium Ions on 3-indoleacetic Acid Uptake and Metabolism by Pea Roots.
It has previously been shown that indoleacetic acid (IAA) applied to pea roots is in part clegraded and in part conjugated witlh aspartic acid to form indoleacetylaspartic acicl (IAAspA) (2, 6). WVhile other workers (9) have reported that IAA applied to pea roots is metabolically bound to tissue protein to give a Salkowski reactive derivative, w\e have found no evidlence of such a complex. almo...
متن کاملInfluences of Gibberellic Acid on Metabolism of Indoleacetic Acid, Acetate, and Glucose in Roots of Higher Plants.
The major effects of the gibberellins (GA) on plants have been reviewed recently (13, 14) but no definite linkage with any metabolic pathway has been established. In their study of photosynthesis in gibberellin treated leaves Haber and Tolbert (8) concluded that gibberellic acid neither enhanced the rate of CO2 fixation per unit of leaf tissue nor altered the general pathways of short time meta...
متن کاملRapid effects of indoleacetic Acid and ethylene on the growth of intact pea roots.
Root auxanometers were used to determine the growth rates of individual intact primary roots accurately and quickly. The growth of pea (Pisum sativum L.) roots was inhibited by both indoleacetic acid and ethylene within 20 minutes. A supramaximal concentration of ethylene inhibited root growth less than did 5 to 20 mum indoleacetic acid, indicating that inhibition of root growth by auxin was no...
متن کاملPromotion of indoleacetic Acid oxidase isoenzymes in tobacco callus cultures by indoleacetic Acid.
Indoleacetic acid oxidase in tobacco callus cultures (Nicotiana tabacum L., cv. White Gold) was composed of at least two groups of isoenzymes, which were distinctly different in electrophoretic mobilities and in responses to growth substances. Indoleacetic acid had dual effects; at low concentrations it promoted the development of two fast-migrating indoleacetic acid oxidase isoenzymes, but at ...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1961
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.36.6.783