Abstract

SCREENING AND INVITRO CHARACTERIZATION OF SIDEPHORE PRODUCING PSEUDOMONAS FLUORESCENS

T. Mohammad Munawar*, R. Srinu Venkat Rao and H. Bharath Raj

Abstract

Pseudomonas fluorescens is a common gram negative, rod shaped bacterium. Pseudomonas fluorescens produce nearly eight secondary metabolites. Pseudomonas species have been widely studied as biological agents (BCAs) and it is alternative to the application of chemical bactericides. The objective of present study was to screening of the isolate which showed varied levels of PGPR traits – siderophore, HCN and IAA. The isolate K was identified as Pseudomonas fluorescens by biochemical tests. Concurrent production of siderophore, IAA, HCN, NH3 and catalase suggests the isolate K possesses plant growth promotion and broad spectrum biocontrol potential.

Keywords: Pseudomonas fluorescens, siderophore, IAA, HCN, biocontrol agent.