title: Sensitivity and repair of bacteria and phages after exposure to far and near UV light.
abstract: Inactivation of bacterial strains derived from E. coli B, which differ in the DNA-repair capacity  (exc-, pol- and rec-) was investigated after far and near UV irradiation. The same strains were also used as hosts for UV-irradiated phage T7. The injuries caused in bacteria and phages by radiation with longer wavelengths were reparable with greater difficulty and only to a lesser extent by the investigated repair mechanisms. We suppose that near UV affects cell proteins and that, as a result of this damage, the DNA-repair systems may be inhibited.
mesh_terms: D004260:DNA Repair / Q000528:radiation effects; D004269:DNA, Bacterial / Q000096:biosynthesis; D004279:DNA, Viral / Q000096:biosynthesis; D004926:Escherichia coli / Q000378:metabolism / Q000502:physiology / Q000528:radiation effects*; D008027:Light; D013604:T-Phages / Q000378:metabolism / Q000502:physiology / Q000528:radiation effects*; D014466:Ultraviolet Rays
chemical_list: D004269:DNA, Bacterial; D004279:DNA, Viral