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Journal ArticleDOI

Detection of gibberellic acid in Azotobacter cultures.

V Vancura
- 07 Oct 1961 - 
- Vol. 192, Iss: 4797, pp 88-89
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TLDR
It is shown that Azotobacter cultures can affect the germination of seeds and growth of plants, and the detection of another growth-active compound, in addition to indole-3-acetic acid, was described.
Abstract
IT is known that Azotobacter cultures can affect the germination of seeds and growth of plants. It is assumed that this influence is due to the presence of physiologically active substances and vitamins in the cultures. Actually, indole-3-acetic acid has been detected in Azotobacter cultures1,2. In a previous paper2 the detection of another growth-active compound, in addition to indole-3-acetic acid, was described. More details about this compound, which appeared to be gibberellic acid, are presented here.

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Citations
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Journal ArticleDOI

Root exudates of plants

TL;DR: When plants previously growing under favourable temperature conditions were exposed for three days to a lower temperature, there was a several times higher exudation from the roots of maize and a marked rise from roots of cucumber in comparison with control plants.
Journal ArticleDOI

Root exudates of plants: II. Composition of root exudates of some vegetables

V. Vančura, +1 more
- 01 Feb 1965 - 
TL;DR: In this article, the root exudates of six plants from four families, barley, wheat, cucumber, turnip cabbage, tomato, and red pepper, were analyzed in the initial stages of growth and for the last two species, also at the fruiting stage.
Journal ArticleDOI

Production of plant growth substances by Azotobacter chroococcum.

TL;DR: The gibberellins in Azotobacter cultures probably cause the reported effects on plant development and yield when seeds or roots are inoculated with Azot Obacter.
Journal ArticleDOI

The production of hormones in higher plants

TL;DR: This review discusses the natural auxin of plants, indol‐3yl‐acetic acid, and its role in the control of growth and differentiation, and the way in which hormone production is itself controlled or about the cellular sites of hormone synthesis.
References
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Journal ArticleDOI

Indole derivatives in Azotobacter cultures

TL;DR: In this article, the authors investigated the effect of Azotobacter cultures on plant growth and found that β-Indoleacetic acid is transformed by older cultures to indole-3-carbonic acid.
Journal ArticleDOI

Quantitative estimation of gibberellic acid by paper chromatography

TL;DR: In this paper, a method for the quantitative determination of gibberellic acid in fermentation media, using descending paper chromatography in butylacetate-water is described, where a sample is adjusted to pH 2.5-3.0, extracted with n-butanol, and 0.05 ml organic layer is spotted on Chromatographic paper.
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