UV-B absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change
Current attempts to develop a proxy for Earth’s surface ultraviolet-B (UV-B) flux focus on the organic chemistry of pollen and spores because their constituent biopolymer, sporopollenin, contains UV-B absorbing pigments whose relative abundance may respond to the ambient UV-B flux. Fourier transform...
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ftjpolarres:oai:journals.openacademia.net:article/3032 2023-05-15T18:02:43+02:00 UV-B absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change Fraser, Wesley T. Sephton, Mark A. Watson, Jonathan S. Self, Stephen Lomax, Barry H. James, David I. Wellman, Charles H. Callaghan, Terry V. Beerling, David J. 2011-08-23 application/pdf text/html application/epub+zip text/xml https://polarresearch.net/index.php/polar/article/view/3032 https://doi.org/10.3402/polar.v30i0.8312 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3032/pdf_223 https://polarresearch.net/index.php/polar/article/view/3032/html_200 https://polarresearch.net/index.php/polar/article/view/3032/6834 https://polarresearch.net/index.php/polar/article/view/3032/xml_200 https://polarresearch.net/index.php/polar/article/view/3032 doi:10.3402/polar.v30i0.8312 Copyright (c) 2018 Polar Research Polar Research; Vol 30 (2011) 1751-8369 FTIR spores ferulic acid p-coumaric acid shade sporopollenin info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2011 ftjpolarres https://doi.org/10.3402/polar.v30i0.8312 2021-11-11T19:13:37Z Current attempts to develop a proxy for Earth’s surface ultraviolet-B (UV-B) flux focus on the organic chemistry of pollen and spores because their constituent biopolymer, sporopollenin, contains UV-B absorbing pigments whose relative abundance may respond to the ambient UV-B flux. Fourier transform infrared (FTIR) microspectroscopy provides a useful tool for rapidly determining the pigment content of spores. In this paper, we use FTIR to detect a chemical response of spore wall UV-B absorbing pigments that corresponds with levels of shade beneath the canopy of a high-latitude Swedish birch forest. A 27% reduction in UV-B flux beneath the canopy leads to a significant (p<0.05) 7.3% reduction in concentration of UV-B absorbing compounds in sporopollenin. The field data from this natural flux gradient in UV-B further support our earlier work on sporopollenin-based proxies derived from sedimentary records and herbaria collections.Keywords: FTIR, spores, ferulic acid, p-coumaric acid, shade, sporopollenin(Published: 23 August 2011)Citation: Polar Research 2011, 30, 8312, DOI:10.3402/polar.v30i0.8312 Article in Journal/Newspaper Polar Research Polar Research (E-Journal) Polar Research 30 1 8312 |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
topic |
FTIR spores ferulic acid p-coumaric acid shade sporopollenin |
spellingShingle |
FTIR spores ferulic acid p-coumaric acid shade sporopollenin Fraser, Wesley T. Sephton, Mark A. Watson, Jonathan S. Self, Stephen Lomax, Barry H. James, David I. Wellman, Charles H. Callaghan, Terry V. Beerling, David J. UV-B absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change |
topic_facet |
FTIR spores ferulic acid p-coumaric acid shade sporopollenin |
description |
Current attempts to develop a proxy for Earth’s surface ultraviolet-B (UV-B) flux focus on the organic chemistry of pollen and spores because their constituent biopolymer, sporopollenin, contains UV-B absorbing pigments whose relative abundance may respond to the ambient UV-B flux. Fourier transform infrared (FTIR) microspectroscopy provides a useful tool for rapidly determining the pigment content of spores. In this paper, we use FTIR to detect a chemical response of spore wall UV-B absorbing pigments that corresponds with levels of shade beneath the canopy of a high-latitude Swedish birch forest. A 27% reduction in UV-B flux beneath the canopy leads to a significant (p<0.05) 7.3% reduction in concentration of UV-B absorbing compounds in sporopollenin. The field data from this natural flux gradient in UV-B further support our earlier work on sporopollenin-based proxies derived from sedimentary records and herbaria collections.Keywords: FTIR, spores, ferulic acid, p-coumaric acid, shade, sporopollenin(Published: 23 August 2011)Citation: Polar Research 2011, 30, 8312, DOI:10.3402/polar.v30i0.8312 |
format |
Article in Journal/Newspaper |
author |
Fraser, Wesley T. Sephton, Mark A. Watson, Jonathan S. Self, Stephen Lomax, Barry H. James, David I. Wellman, Charles H. Callaghan, Terry V. Beerling, David J. |
author_facet |
Fraser, Wesley T. Sephton, Mark A. Watson, Jonathan S. Self, Stephen Lomax, Barry H. James, David I. Wellman, Charles H. Callaghan, Terry V. Beerling, David J. |
author_sort |
Fraser, Wesley T. |
title |
UV-B absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change |
title_short |
UV-B absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change |
title_full |
UV-B absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change |
title_fullStr |
UV-B absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change |
title_full_unstemmed |
UV-B absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change |
title_sort |
uv-b absorbing pigments in spores: biochemical responses to shade in a high-latitude birch forest and implications for sporopollenin-based proxies of past environmental change |
publisher |
Norwegian Polar Institute |
publishDate |
2011 |
url |
https://polarresearch.net/index.php/polar/article/view/3032 https://doi.org/10.3402/polar.v30i0.8312 |
genre |
Polar Research |
genre_facet |
Polar Research |
op_source |
Polar Research; Vol 30 (2011) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3032/pdf_223 https://polarresearch.net/index.php/polar/article/view/3032/html_200 https://polarresearch.net/index.php/polar/article/view/3032/6834 https://polarresearch.net/index.php/polar/article/view/3032/xml_200 https://polarresearch.net/index.php/polar/article/view/3032 doi:10.3402/polar.v30i0.8312 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v30i0.8312 |
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Polar Research |
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30 |
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8312 |
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