*Division of Microbiology, I.A.R.I., New Delhi-110 012, India, latarajat@yahoo.co.in
Department of Biosciences and Biotechnology, Banasthali University, Banasthali, India.
Online published on 23 July, 2012.
The lipolytic strain Pseudomonas aeruginosa SL-72 was isolated from soil contaminated with the effluents from mustard oil plant. It was screened in vitro for different plant growth promoting traits like production of ammonia, hydrogen cyanide, siderophore, phosphate solubilization, nitrate reduction and antifungal activity against Macrophomina phaseolina. Moreover, it was found to produce aryl sulphatase, alkaline phosphatase, and fluorescein diacetate hydrolase, which confirmed its role in nutrient cycling if applied in soil as PGPR. Biosurfactants involved in bio-control activity, was also detected in the strain P. aeruginosa SL-72 and its production was enhanced when starch was used as carbon source (0.256 g l−1). Altogether, the use of this lipolytic strain offered promising and eco-friendly strategies for conventional and organic agriculture worldwide.
Biosurfactants, HCN production, Pseudomonas aeruginosa SL-72
