1979
DOI: 10.1111/j.1751-1097.1979.tb07068.x
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ACTION SPECTRA FOR OXYGEN‐DEPENDENT AND INDEPENDENT INACTIVATION OF ESCHERZCHZA COLZ WP2s FROM 254 TO 460 NM*

Abstract: Abstract— Action spectra for lethality of E. coli WP2s under aerobic and anaerobic conditions. based on final slopes of the survival curves, reveal the absence of oxygen dependence at 313 nm and shorter wavelengths and a strong oxygen dependence (OER of 12 at 334 nm and 16 at 365 nm) at wavelengths longer than 313 nm. Shoulders or small peaks at340, 365, 410 and 500 nm suggest the participation of non‐DNA chromophores in aerobic lethality at these wavelength ranges.

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Cited by 72 publications
(54 citation statements)
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“…Oxygen dependence was not significant at 365 nm with strain AB2480 in the absence of photoreactivation . This result supports previous reports of the absence of oxygen dependence for lethality at 365 nm with this strain (Tyrrell 1976, Webb andBrown 1979b) . However, there was a strong oxygen enhancement of 365 nm lethality when the irradiated cells were subjected to maximal PR (figure 1) .…”
Section: Resultssupporting
confidence: 82%
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“…Oxygen dependence was not significant at 365 nm with strain AB2480 in the absence of photoreactivation . This result supports previous reports of the absence of oxygen dependence for lethality at 365 nm with this strain (Tyrrell 1976, Webb andBrown 1979b) . However, there was a strong oxygen enhancement of 365 nm lethality when the irradiated cells were subjected to maximal PR (figure 1) .…”
Section: Resultssupporting
confidence: 82%
“…Furthermore, the production of cyclobutyl pyrimidine dimers by gamma radiation was demonstrated by chemical assay (Wang and Smith 1978) . A strong oxygen enhancement has been obtained for lethal effects with both 365 nm (Tyrrell 1976, Webb andBrown 1979 a, b) and gamma radiation (Vinicombe et al . 1978) in repair-proficient, uvrA rec + , uvr + recA and polA strains .…”
Section: Discussionmentioning
confidence: 99%
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