[Pseudomonas putida PpG1 resistance to different bacteriophages]

Cris-cross resistance analysis has been accomplished for some Pseudomonas putida PpG1 mutants resistant to pf16, af, tf and PMW phages. On the basis of the results, a formal scheme of the receptor sites for these phages on the bacterial cell surface was drawn. Study of the sensitivity of P. putida PpG1 phage-resistant mutants an unexpected phenomenon. Some of the phages specific to P. putida B-21 and B-31 which did not adsorb on the PpG1 strain acquired the ability on certain types of the PpG1 phage resistant mutants. Mutants of P. putida B-21 and B-21 resistant to specific phages did not maintain the growth of pf16, af, tf or PMW phages.