Review. Biosynthesis of indole-3-acetic acid and plant growth promoting by bacteria

Main Article Content

Paulina Vega-Celedón

Abstract

The plant hormone indole-3-acetic acid (IAA) is the main auxin in plants. IAA controls several physiological processes such as cell elongation and division, tissue differentiation and responses to light and gravity. IAA concentration is regulated in plants. Interestingly, bacteria can modulate IAA levels. The most widely distributed biosynthetic IAA routes in bacteria are indole-3-pyruvate (IPA) and indole-3-acetamide (IAM) anabolic pathways. These metabolic pathways use tryptophan as precursor. IPA pathway has been described mainly in plant growth-promoting bacteria (PGPB), whereas the IAM pathway is present in phytopathogenic bacteria. PGPB stimulate plant growth through various mechanisms including the production of plant hormones. Studies on PGPB that are capable to produce IAA indicate that this phytohormone plays a crucial role for promoting plant growth.

Article Details

How to Cite
Vega-Celedón, P. (2016). Review. Biosynthesis of indole-3-acetic acid and plant growth promoting by bacteria. Cultivos Tropicales, 37(5 ESP), 33–39. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/1186
Section
Original Article

Similar Articles

You may also start an advanced similarity search for this article.