Range of action and genetic bacteriocin codification of Pseudomonas aeruginosa iolated from three different ecological niches

Padilla, C. Departamento de Ciencias Biológicas, Universidad de Talca, Casilla 747, Talca, Chile.Strains of Pseudomonas aeruginosa isolated from sediments in wells showed a greater bacteriocinogenic activity in those isolated from river and clinical specimens. More than half of all the strains examined had extrachromosomal DNA. Plasmid DNA was extracted from all the strains and in only 24/120, all from different origins, was the curing achieved; all these strains coded their bacteriocins in the chromosomal DN