Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus
Studies of ultraviolet (UV) light-induced DNA damage in three Antarctic moss species have shown Ceratodon purpureus to be the most UV tolerant, despite containing lower concentrations of methanol-soluble UV-screening compounds than the co-occurring Bryum pseudotriquetrum . In this study, alkali extr...
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Online Access: | https://doi.org/10.1111/j.1469-8137.2008.02499.x http://www.ncbi.nlm.nih.gov/pubmed/18513223 http://ecite.utas.edu.au/104033 |
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ftunivtasecite:oai:ecite.utas.edu.au:104033 2023-05-15T14:03:25+02:00 Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus Clarke, LJ Robinson, SA 2008 https://doi.org/10.1111/j.1469-8137.2008.02499.x http://www.ncbi.nlm.nih.gov/pubmed/18513223 http://ecite.utas.edu.au/104033 en eng Blackwell Publishing Ltd http://dx.doi.org/10.1111/j.1469-8137.2008.02499.x Clarke, LJ and Robinson, SA, Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus , New Phytologist, 179, (3) pp. 776-783. ISSN 0028-646X (2008) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/18513223 http://ecite.utas.edu.au/104033 Biological Sciences Ecology Ecological Physiology Refereed Article PeerReviewed 2008 ftunivtasecite https://doi.org/10.1111/j.1469-8137.2008.02499.x 2019-12-13T22:05:26Z Studies of ultraviolet (UV) light-induced DNA damage in three Antarctic moss species have shown Ceratodon purpureus to be the most UV tolerant, despite containing lower concentrations of methanol-soluble UV-screening compounds than the co-occurring Bryum pseudotriquetrum . In this study, alkali extraction of cell wall-bound phenolics, combined with methanol extraction of soluble phenolics, was used to determine whether cell wall-bound UV screens explain the greater UV tolerance of C.purpureus . The combined pool of UV screens was similar in B.pseudotriquetrum and C.purpureus , but whilst B.pseudotriquetrum had almost equal concentrations of MeOH-soluble and alkali-extractable cell wall-bound UV-screening compounds, in C.purpureus the concentration of cell wall-bound screening compounds was six times higher than the concentration of MeOH-soluble UV screens. The Antarctic endemic Schistidium antarctici possessed half the combined pool of UV screens of the other species but, as in C.purpureus , these were predominantly cell wall bound. Confocal microscopy confirmed the localization of UV screens in each species. Greater investment in cell wall-bound UV screens offers C.purpureus a more spatially uniform, and potentially more effective, UV screen. Schistidium antarctici has the lowest UV-screening potential, indicating that this species may be disadvantaged under continuing springtime ozone depletion. Cell wall compounds have not previously been quantified in bryophytes but may be an important component of the UV defences of lower plants. Article in Journal/Newspaper Antarc* Antarctic Schistidium antarctici eCite UTAS (University of Tasmania) Antarctic The Antarctic New Phytologist 179 3 776 783 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
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English |
topic |
Biological Sciences Ecology Ecological Physiology |
spellingShingle |
Biological Sciences Ecology Ecological Physiology Clarke, LJ Robinson, SA Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus |
topic_facet |
Biological Sciences Ecology Ecological Physiology |
description |
Studies of ultraviolet (UV) light-induced DNA damage in three Antarctic moss species have shown Ceratodon purpureus to be the most UV tolerant, despite containing lower concentrations of methanol-soluble UV-screening compounds than the co-occurring Bryum pseudotriquetrum . In this study, alkali extraction of cell wall-bound phenolics, combined with methanol extraction of soluble phenolics, was used to determine whether cell wall-bound UV screens explain the greater UV tolerance of C.purpureus . The combined pool of UV screens was similar in B.pseudotriquetrum and C.purpureus , but whilst B.pseudotriquetrum had almost equal concentrations of MeOH-soluble and alkali-extractable cell wall-bound UV-screening compounds, in C.purpureus the concentration of cell wall-bound screening compounds was six times higher than the concentration of MeOH-soluble UV screens. The Antarctic endemic Schistidium antarctici possessed half the combined pool of UV screens of the other species but, as in C.purpureus , these were predominantly cell wall bound. Confocal microscopy confirmed the localization of UV screens in each species. Greater investment in cell wall-bound UV screens offers C.purpureus a more spatially uniform, and potentially more effective, UV screen. Schistidium antarctici has the lowest UV-screening potential, indicating that this species may be disadvantaged under continuing springtime ozone depletion. Cell wall compounds have not previously been quantified in bryophytes but may be an important component of the UV defences of lower plants. |
format |
Article in Journal/Newspaper |
author |
Clarke, LJ Robinson, SA |
author_facet |
Clarke, LJ Robinson, SA |
author_sort |
Clarke, LJ |
title |
Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus |
title_short |
Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus |
title_full |
Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus |
title_fullStr |
Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus |
title_full_unstemmed |
Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus |
title_sort |
cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the antarctic moss, ceratodon purpureus |
publisher |
Blackwell Publishing Ltd |
publishDate |
2008 |
url |
https://doi.org/10.1111/j.1469-8137.2008.02499.x http://www.ncbi.nlm.nih.gov/pubmed/18513223 http://ecite.utas.edu.au/104033 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Schistidium antarctici |
genre_facet |
Antarc* Antarctic Schistidium antarctici |
op_relation |
http://dx.doi.org/10.1111/j.1469-8137.2008.02499.x Clarke, LJ and Robinson, SA, Cell wall-bound ultraviolet-screening compounds explain the high ultraviolet tolerance of the Antarctic moss, Ceratodon purpureus , New Phytologist, 179, (3) pp. 776-783. ISSN 0028-646X (2008) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/18513223 http://ecite.utas.edu.au/104033 |
op_doi |
https://doi.org/10.1111/j.1469-8137.2008.02499.x |
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New Phytologist |
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179 |
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3 |
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776 |
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783 |
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