Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis
The main objective was to assess the influence of the seasonal stratospheric ozone depletion on the UV climate in Antarctica by using a biological test system. This method is based on the UV sensitivity of a DNA repair-deficient strain of Bacillus subtilis (TKJ 6321). In our field experiment, dried...
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ftawi:oai:epic.awi.de:2471 2024-09-15T17:43:47+00:00 Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis Puskeppeleit, M. Quintern, L. E. El Naggar, Saad El Dine Schott, J.-U. Eschweiler, U. Horneck, G. Bücker, H. 1992 https://epic.awi.de/id/eprint/2471/ https://hdl.handle.net/10013/epic.13057 unknown Puskeppeleit, M. , Quintern, L. E. , El Naggar, S. E. D. , Schott, J. U. , Eschweiler, U. , Horneck, G. and Bücker, H. (1992) Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis , Applied Environment Microbiology, 58 (8), pp. 2355-2359 . hdl:10013/epic.13057 EPIC3Applied Environment Microbiology, 58(8), pp. 2355-2359 Article peerRev 1992 ftawi 2024-06-24T03:53:43Z The main objective was to assess the influence of the seasonal stratospheric ozone depletion on the UV climate in Antarctica by using a biological test system. This method is based on the UV sensitivity of a DNA repair-deficient strain of Bacillus subtilis (TKJ 6321). In our field experiment, dried layers of B. subtilis spores on quartz discs were exposed in different seasons in an exposure box open to solar radiation at the German Antarctic Georg von Neumayer Station (70°37' S, 8°22' W). The UV-induced loss of the colony-forming ability was chosen as the biological end point and taken as a measure for the absorbed biologically harmful UV radiation. Inactivation constants were calculated from the resulting dose-response curves. The results of field experiments performed in different seasons indicate strongly season-dependent trend of the daily UV-B level. Exposures performed at extremely depleted ozone concentrations (October 1990) gave higher biologically harmful UV-B levels than expected from the calculated season-dependent trend, which was determined at normal ozone values. These values were similar to values which were measured during the Antarctic summer, indicating that the depleted ozone column thickness has an extreme influence on the biologically harmful UV climate on ground. Article in Journal/Newspaper Antarc* Antarctic Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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description |
The main objective was to assess the influence of the seasonal stratospheric ozone depletion on the UV climate in Antarctica by using a biological test system. This method is based on the UV sensitivity of a DNA repair-deficient strain of Bacillus subtilis (TKJ 6321). In our field experiment, dried layers of B. subtilis spores on quartz discs were exposed in different seasons in an exposure box open to solar radiation at the German Antarctic Georg von Neumayer Station (70°37' S, 8°22' W). The UV-induced loss of the colony-forming ability was chosen as the biological end point and taken as a measure for the absorbed biologically harmful UV radiation. Inactivation constants were calculated from the resulting dose-response curves. The results of field experiments performed in different seasons indicate strongly season-dependent trend of the daily UV-B level. Exposures performed at extremely depleted ozone concentrations (October 1990) gave higher biologically harmful UV-B levels than expected from the calculated season-dependent trend, which was determined at normal ozone values. These values were similar to values which were measured during the Antarctic summer, indicating that the depleted ozone column thickness has an extreme influence on the biologically harmful UV climate on ground. |
format |
Article in Journal/Newspaper |
author |
Puskeppeleit, M. Quintern, L. E. El Naggar, Saad El Dine Schott, J.-U. Eschweiler, U. Horneck, G. Bücker, H. |
spellingShingle |
Puskeppeleit, M. Quintern, L. E. El Naggar, Saad El Dine Schott, J.-U. Eschweiler, U. Horneck, G. Bücker, H. Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis |
author_facet |
Puskeppeleit, M. Quintern, L. E. El Naggar, Saad El Dine Schott, J.-U. Eschweiler, U. Horneck, G. Bücker, H. |
author_sort |
Puskeppeleit, M. |
title |
Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis |
title_short |
Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis |
title_full |
Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis |
title_fullStr |
Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis |
title_full_unstemmed |
Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis |
title_sort |
long-term dosimetry of solar uv radiation in antarctica with spores of bacillus subtilis |
publishDate |
1992 |
url |
https://epic.awi.de/id/eprint/2471/ https://hdl.handle.net/10013/epic.13057 |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
EPIC3Applied Environment Microbiology, 58(8), pp. 2355-2359 |
op_relation |
Puskeppeleit, M. , Quintern, L. E. , El Naggar, S. E. D. , Schott, J. U. , Eschweiler, U. , Horneck, G. and Bücker, H. (1992) Long-term dosimetry of solar UV radiation in Antarctica with spores of Bacillus subtilis , Applied Environment Microbiology, 58 (8), pp. 2355-2359 . hdl:10013/epic.13057 |
_version_ |
1810490962314526720 |