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Lethal effects of solar radiation in proficient and deficient bacteria in repair systems; Efeitos letais da luz solar em bacterias proficientes e deficientes em reparos: acoes e interacoes

Thesis/Dissertation:

Abstract

A study of the lethal action of solar radiation on strains of E.coli K12, proficient or deficient in repair systems, as well as the wild type strain gene products are involved in repair of damage induced by solar radiation. The inactivation of the various bacterial strains (normalized to a dose equivalent to radiation at a wavelength 254 nm) suggests that the more energetic wavelengths of the solar spectrum (290-320 nm) could be responsible for the primary damage that occurs in the DNA. The reduction in the shoulder of the survival curve in wild type strains in indicative of induction of sub-lethal damage in this region of the curve. Analysing solar inactivation curves of the bacterial strains (normalised by spore dosimetry) together with those of the same strains irradiated with UV at 254 nm, it was evident that 254 nm is not the ideal wavelength for comparison. This analysis also indicated that in addition to damage to DNA, other factors are involved in the solar radiation inactivation of wild type strains. (author).
Authors:
Publication Date:
Dec 31, 1980
Product Type:
Thesis/Dissertation
Report Number:
INIS-BR-2960
Reference Number:
SCA: 560130; PA: AIX-23:086276; SN: 92000885679
Resource Relation:
Other Information: TH: Tese (M.Sc.).; PBD: 1980
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; DNA REPAIR; GENE MUTATIONS; ESCHERICHIA COLI; BIOLOGICAL RADIATION EFFECTS; COMPARATIVE EVALUATIONS; SOLAR RADIATION; ULTRAVIOLET RADIATION; 560130; RADIATION EFFECTS ON MICROORGANISMS
OSTI ID:
10191355
Research Organizations:
Universidade do Estado, Rio de Janeiro, RJ (Brazil). Centro Biomedico
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
Other: ON: DE93607205; TRN: BR9230193086276
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
79 p.
Announcement Date:
Jul 07, 2005

Thesis/Dissertation:

Citation Formats

Sousa Neto, A de. Lethal effects of solar radiation in proficient and deficient bacteria in repair systems; Efeitos letais da luz solar em bacterias proficientes e deficientes em reparos: acoes e interacoes. Brazil: N. p., 1980. Web.
Sousa Neto, A de. Lethal effects of solar radiation in proficient and deficient bacteria in repair systems; Efeitos letais da luz solar em bacterias proficientes e deficientes em reparos: acoes e interacoes. Brazil.
Sousa Neto, A de. 1980. "Lethal effects of solar radiation in proficient and deficient bacteria in repair systems; Efeitos letais da luz solar em bacterias proficientes e deficientes em reparos: acoes e interacoes." Brazil.
@misc{etde_10191355,
title = {Lethal effects of solar radiation in proficient and deficient bacteria in repair systems; Efeitos letais da luz solar em bacterias proficientes e deficientes em reparos: acoes e interacoes}
author = {Sousa Neto, A de}
abstractNote = {A study of the lethal action of solar radiation on strains of E.coli K12, proficient or deficient in repair systems, as well as the wild type strain gene products are involved in repair of damage induced by solar radiation. The inactivation of the various bacterial strains (normalized to a dose equivalent to radiation at a wavelength 254 nm) suggests that the more energetic wavelengths of the solar spectrum (290-320 nm) could be responsible for the primary damage that occurs in the DNA. The reduction in the shoulder of the survival curve in wild type strains in indicative of induction of sub-lethal damage in this region of the curve. Analysing solar inactivation curves of the bacterial strains (normalised by spore dosimetry) together with those of the same strains irradiated with UV at 254 nm, it was evident that 254 nm is not the ideal wavelength for comparison. This analysis also indicated that in addition to damage to DNA, other factors are involved in the solar radiation inactivation of wild type strains. (author).}
place = {Brazil}
year = {1980}
month = {Dec}
}