Abstract
The gibberellins (GAs) are an important group of hormones which exert various effects on promoter and regulator of plant growth. Gibberellic acid (GA3) is a natural plant hormone, with great economical and industrial importance. It affects stem elongation, germination, elimination of dormancy, flowering, sex expression, enzyme induction and leaf and fruit senescence. Despite its diverse applications, the use of GA3 is limited due to its high production costs. The industrial process currently used for the production of GA3 is based on submerged fermentation (SmF) techniques. As an alternative for its production, solid state fermentation (SSF) has also been investigated for its ability to increase the yields of GA3 with the use of agro-industrial wastes as support/substrate, which contributes to the decreased production costs. This review describes GA3’s physical, chemical and biological properties, its production by fermentation and new advances that are being carried out with special interest on the SSF technique.
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