Soluble Phosphate Production by Pseudomonas Aeruginosa in the Presence of Cadmium

Abstract

The aim of the present study was to evaluate the tolerance capacity of Pseudomonas aeruginosa strains to different cadmium concentrations and to measure the in vitro solubilisation efficiency of soluble phosphate. Ps. aeruginosa was evaluated in vitro for maximum tolerance to CdCl2 and simultaneous solubilisation of soluble phosphate in NBRIND culture medium. The results show that P. aeruginosa has the ability to grow up to 500 mg/L CdCl2 and also solubilizes phosphate in vitro from an initial concentration of 231 mg/L after 2 hours of incubation to 1496 mg/L after 34 hours of incubation. Pseudomonas aeruginosa at different incubation times was found to be efficient in producing soluble phosphate which makes it a strategy to promote plant growth in cadmium-contaminated environments.