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Changes in the radioresistance of bacteria after the inhibition of proteosynthesis in the preirradiation phase

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Abstract

The strain ofEscherichia coli WP2 (tryv) was irradiated with UV light, at a dosage of 240 erg/mm. Proteosynthesis was inhibited by the elimination of the essential amino acid from the cultivation medium. Changes in radioresistance were followed during 45 minutes of starvation and during the subsequent 45 minutes of restitution after the addition of the essential amino acid. The radioresistance of the cells showed a linear increase immediately after the removal of the essential amino acids, proportional to the duration of the inhibition of proteosynthesis. The increase in radioresistance was shown to be reversible. After the addition of the essential amino acid there was an immediate decrease in radioresistance which was most marked in the first 15 minutes.

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Authors and Affiliations

  1. Department of Genetics, Institute of Biology, and Endocrinological Institute, Slovak Academy of Sciences, Bratislava

    Milena Sedliaková, Darina Slameňová & R. Štukovský

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  1. Milena Sedliaková
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  2. Darina Slameňová
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  3. R. Štukovský
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Sedliaková, M., Slameňová, D. & Štukovský, R. Changes in the radioresistance of bacteria after the inhibition of proteosynthesis in the preirradiation phase. Folia Microbiol 11, 169–172 (1966). https://doi.org/10.1007/BF02901428

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  • DOI: https://doi.org/10.1007/BF02901428

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