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Plant Signaling & Behavior

Plant Signaling & Behavior

IF: 2.79
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Gibberellic acid in plant: still a mystery unresolved.

Published:1 September 2013 DOI: 10.4161/psb.25504 PMID: 23857350
Ramwant Gupta, S K Chakrabarty

Abstract

Gibberellic acid (GA), a plant hormone stimulating plant growth and development, is a tetracyclic di-terpenoid compound. GAs stimulate seed germination, trigger transitions from meristem to shoot growth, juvenile to adult leaf stage, vegetative to flowering, determines sex expression and grain development along with an interaction of different environmental factors viz., light, temperature and water. The major site of bioactive GA is stamens that influence male flower production and pedicel growth. However, this opens up the question of how female flowers regulate growth and development, since regulatory mechanisms/organs other than those in male flowers are mandatory. Although GAs are thought to act occasionally like paracrine signals do, it is still a mystery to understand the GA biosynthesis and its movement. It has not yet confirmed the appropriate site of bioactive GA in plants or which tissues targeted by bioactive GAs to initiate their action. Presently, it is a great challenge for scientific community to understand the appropriate mechanism of GA movement in plant's growth, floral development, sex expression, grain development and seed germination. The appropriate elucidation of GA transport mechanism is essential for the survival of plant species and successful crop production.

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Related products
Procduct Name CAS Molecular Formula Supplier Price
Gibberellic acid 77-06-5 C19H22O6 671 suppliers $12.50-$1177.75
GRAMICIDIN A 11029-61-1 C99H140N20O17 79 suppliers $32.00-$1440.00

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