[Bacteriocins of species of the genus Pseudomonas]

Occurrence of bacteriocinogeneity in 120 strains of 24 species of Pseudomonas was studied. Active strains producing bacteriocine-like substances were detected among P. fluorescens, P. putida, P. taetrolens, P. fragi, P. stutzeri, P. mendocina, P. maltophilia, and P. pseudoalcaligenes. The bacteriocine-like substances produced by them differed by the morphology of the zones of the test microbe growth inhibition, sensitivity to temperature and enzymes, capacity for dialysis through cellophane membranes and antimicrobial spectrum. The majority of them could be synthesized on agarized and liquid media and induced by UV light and mitomycin C. The strains of P. taetrolens, P. fragi, P. putida and P. fluorescens producing the bacteriocine-like substances had broad antimicrobial spectrum and inhibited the growth of many species of Pseudomonas and representatives of other taxonomic groups of microorganisms.