Indole-3-acetic acid production by Streptomyces fradiae NKZ-259 and its formulation to enhance plant growth.

ABSTRACT:

Background

Indole-3-acetic acid (IAA) is produced by microorganisms and plants via either tryptophan-dependent or tryptophan-independent pathways. Herein, we investigated the optimisation of IAA production by Streptomyces fradiae NKZ-259 and its formulation as a plant growth promoter to improve economic and agricultural development.

Results

The maximum IAA yield achieved using optimal conditions was 82.363 μg/mL in the presence of 2 g/L tryptophan after 6 days of incubation. Thin-layer chromatography (TLC) and high-performance liquid chromatography (HPLC) analysis of putative IAA revealed an RF value of 0.69 and a retention time of 11.842 min, comparable with the IAA standard. Regarding product formulation, kaolin-based powder achieved a suspension rate of 73.74% and a wetti

SUBMITTER: Myo EM 

PROVIDER: S-EPMC6615096 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature