effects of salicylate on population density of naphthalene degrading bacteria in the laboratory and soil

in the study of the effects of salicylate on population density of naphthalene degrading bacteria and heterotrophic bacteria in a sample or: soil polluted with aromatic hydrocarbons, two different concentrations of salicylate (16, 160) ?g / gr of soil incubated for 30 days. at 160 ?g / gr, salicylate enhanced the density of naphthalene degraders and heterotrophic bacteria for 30 days. no chenges in recoverable bacterial population densities were observed when soil samples were treated with 16 ?g of salicylate gr .the activity of naphthalene oxygenase, specifically involved in naphthalene metabolism have been measured in the strain, pseudomonas pseudomallei after incubation with salicylate. the results indicate that synthesis of naphthalene oxygenase is enhanced by salicylate.