Open AccessInteractions between uv radiation of different energies in the inactivation of bacteria
Author(s) -
Rex M. Tyrrell,
Meyrick J. Peak
Publication year - 1978
Publication title -
journal of bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.652
H-Index - 246
eISSN - 1067-8832
pISSN - 0021-9193
DOI - 10.1128/jb.136.1.437-440.1978
Subject(s) - biology , monochromatic color , bacteria , dna , strain (injury) , wavelength , radiation , escherichia coli , biophysics , dna repair , dna damage , irradiation , genetics , optics , physics , gene , botany , anatomy , nuclear physics
A strong lethal interaction was observed between various monochromatic wavelengths (254, 334, 365, and 405 nm) in the repair-proficient E. coli K-12 strain AB 1157, except in the case of preexposure to 405-nm radiation which resulted in a protection against the inactivation resulting from subsequent exposure to 365-or 254-nm radiations. The results may be tentatively explained by assuming two classes of DNA lesions and two classes of damage to repair (reversible and inrreversible) whose proportions vary according to wavelength.
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