Molecular and General Genetics MGG

, Volume 169, Issue 3, pp 229–235 | Cite as

X-Ray sensitivity of Escherichia coli lysogenic for bacteriophage P2

  • Daniela Ghisotti
  • Sandro Zangrossi
  • Gianpiero Sironi


Strains of Escherichia coli C or K lysogenic for the non-inducible phage P2 show a lower survival following X-ray irradiation as compared to nonlysogenic strains. This difference in X-ray sensitivity is not accompanied by a significant difference in X-ray induced mutability. The capacity of X-irradiated P2 lysogens to multiply any of a number of unirradiated infecting phages is severely impaired. These effects of X-ray treatment can be most simply explained as a consequence of the fact that protein and RNA syntheses are strongly inhibited in P2 lysogens after X-irradiation. All the above events specifically occurring in X-rayed P2 lysogens are dependent on the P2 gene old.


Escherichia Coli Lower Survival Induce Mutability 
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Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • Daniela Ghisotti
    • 1
  • Sandro Zangrossi
    • 1
  • Gianpiero Sironi
    • 1
  1. 1.Instituto di GeneticaUniversità di MilanoMilanoItaly

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