Protective pigmentation in UVB‐screened Antarctic lichens studied by Fourier transform Raman spectroscopy: an extremophile bioresponse to radiation stress
Abstract FT‐Raman spectra were obtained for two Antarctic extremophiles, the epilithic lichens Xanthoria elegans and Caloplaca sublobulata from the maritime ecological long‐term research site on Leonie Island. Twelve specimens from cloches designed for the filtering out and transmission of UVB radia...
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crwiley:10.1002/jrs.1172 2024-06-02T07:58:38+00:00 Protective pigmentation in UVB‐screened Antarctic lichens studied by Fourier transform Raman spectroscopy: an extremophile bioresponse to radiation stress Edwards, Howell G. M. Cockell, Charles S. Newton, Emma M. Wynn‐Williams, David D. 2004 http://dx.doi.org/10.1002/jrs.1172 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjrs.1172 https://onlinelibrary.wiley.com/doi/full/10.1002/jrs.1172 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Raman Spectroscopy volume 35, issue 6, page 463-469 ISSN 0377-0486 1097-4555 journal-article 2004 crwiley https://doi.org/10.1002/jrs.1172 2024-05-03T11:32:28Z Abstract FT‐Raman spectra were obtained for two Antarctic extremophiles, the epilithic lichens Xanthoria elegans and Caloplaca sublobulata from the maritime ecological long‐term research site on Leonie Island. Twelve specimens from cloches designed for the filtering out and transmission of UVB radiation over a 2 year period and two specimens from the natural habitat outside the cloches were analysed in terms of their characteristic Raman bands from the two photoprotective pigments parietin and β‐carotene. Following chemometric analysis, the specimens inside the UVB‐protective cloches exhibited a lower parietin:β‐carotene ratio than specimens from the same habitat that did not have UVB protection. The relative roles of parietin, a passive UVB photoprotectant, and β‐carotene are discussed and a possible duality of biological function is suggested for these pigments. Copyright © 2004 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library Antarctic Journal of Raman Spectroscopy 35 6 463 469 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract FT‐Raman spectra were obtained for two Antarctic extremophiles, the epilithic lichens Xanthoria elegans and Caloplaca sublobulata from the maritime ecological long‐term research site on Leonie Island. Twelve specimens from cloches designed for the filtering out and transmission of UVB radiation over a 2 year period and two specimens from the natural habitat outside the cloches were analysed in terms of their characteristic Raman bands from the two photoprotective pigments parietin and β‐carotene. Following chemometric analysis, the specimens inside the UVB‐protective cloches exhibited a lower parietin:β‐carotene ratio than specimens from the same habitat that did not have UVB protection. The relative roles of parietin, a passive UVB photoprotectant, and β‐carotene are discussed and a possible duality of biological function is suggested for these pigments. Copyright © 2004 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Edwards, Howell G. M. Cockell, Charles S. Newton, Emma M. Wynn‐Williams, David D. |
spellingShingle |
Edwards, Howell G. M. Cockell, Charles S. Newton, Emma M. Wynn‐Williams, David D. Protective pigmentation in UVB‐screened Antarctic lichens studied by Fourier transform Raman spectroscopy: an extremophile bioresponse to radiation stress |
author_facet |
Edwards, Howell G. M. Cockell, Charles S. Newton, Emma M. Wynn‐Williams, David D. |
author_sort |
Edwards, Howell G. M. |
title |
Protective pigmentation in UVB‐screened Antarctic lichens studied by Fourier transform Raman spectroscopy: an extremophile bioresponse to radiation stress |
title_short |
Protective pigmentation in UVB‐screened Antarctic lichens studied by Fourier transform Raman spectroscopy: an extremophile bioresponse to radiation stress |
title_full |
Protective pigmentation in UVB‐screened Antarctic lichens studied by Fourier transform Raman spectroscopy: an extremophile bioresponse to radiation stress |
title_fullStr |
Protective pigmentation in UVB‐screened Antarctic lichens studied by Fourier transform Raman spectroscopy: an extremophile bioresponse to radiation stress |
title_full_unstemmed |
Protective pigmentation in UVB‐screened Antarctic lichens studied by Fourier transform Raman spectroscopy: an extremophile bioresponse to radiation stress |
title_sort |
protective pigmentation in uvb‐screened antarctic lichens studied by fourier transform raman spectroscopy: an extremophile bioresponse to radiation stress |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1002/jrs.1172 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjrs.1172 https://onlinelibrary.wiley.com/doi/full/10.1002/jrs.1172 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Journal of Raman Spectroscopy volume 35, issue 6, page 463-469 ISSN 0377-0486 1097-4555 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jrs.1172 |
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Journal of Raman Spectroscopy |
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35 |
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6 |
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463 |
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469 |
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1800742071442604032 |