Study of production of indole acetic acid by soil and plant bacterial isolates on different media

Abstract

PGPR have been reported to produce different phytohormones like auxins, gibberellins and cytokinins. IAA (indole-3-acetic acid) is the group of phytohormones and is considered the most important native auxin. Present study was carried out for quantitative estimation of IAA production ability of selected soil and plant isolates on nutrient agar broth. Isolates positive for P solubilization and those positive for K solubilization/mobilization were also evaluated on respective P and K solubilization media. Result showed, On nutrient agar media, the highest IAA production was recorded with D3 (p