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Occurrence of Substances Similar to Gibberellic Acid in Higher Plants

Occurrence of Substances Similar to Gibberellic Acid in Higher Plants IF the fungal metabolite gibberellic acid is applied to dwarf varieties of pea, french bean (Phaseolus), broad bean (Vicia) or maize, growth is greatly accelerated and plants similar to the normal tall phenotype are produced; the tall varieties themselves are much less affected by gibberellic acid, if at all1,2. This suggests that this acid, or a substance with similar physiological properties, is a normal plant-growth regulator, produced less abundantly in dwarf varieties than in tall ones. The growth-promoting substance obtained from immature bean seeds by Mitchell, Skaggs and Anderson3 was probably of this type; more recently, West and Phinney4 have reported the probable occurrence of substances like gibberellic acid in seeds of several plant species; I have obtained evidence of such a substance in the shoots of dwarf and tall peas, and this is summarized below. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Springer Journals

Occurrence of Substances Similar to Gibberellic Acid in Higher Plants

RADLEY, MARGARET
Nature , Volume 178 (4541) – Nov 10, 1956
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References (3)

Publisher
Springer Journals
Copyright
Copyright © 1956 by Nature Publishing Group
Subject
Science, Humanities and Social Sciences, multidisciplinary; Science, Humanities and Social Sciences, multidisciplinary; Science, multidisciplinary
ISSN
0028-0836
eISSN
1476-4687
DOI
10.1038/1781070a0
Publisher site
See Article on Publisher Site

Abstract

IF the fungal metabolite gibberellic acid is applied to dwarf varieties of pea, french bean (Phaseolus), broad bean (Vicia) or maize, growth is greatly accelerated and plants similar to the normal tall phenotype are produced; the tall varieties themselves are much less affected by gibberellic acid, if at all1,2. This suggests that this acid, or a substance with similar physiological properties, is a normal plant-growth regulator, produced less abundantly in dwarf varieties than in tall ones. The growth-promoting substance obtained from immature bean seeds by Mitchell, Skaggs and Anderson3 was probably of this type; more recently, West and Phinney4 have reported the probable occurrence of substances like gibberellic acid in seeds of several plant species; I have obtained evidence of such a substance in the shoots of dwarf and tall peas, and this is summarized below.

Journal

Nature – Springer Journals

Published: Nov 10, 1956

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