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Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances
For long-lived forest tree species, the understanding of intraspecific variation among populations and their response to water availability can reveal their ability to cope with and adapt to climate change. Dissipation of excess excitation energy, mediated by photoprotective isoprenoids, is an impor...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5223217/ https://www.ncbi.nlm.nih.gov/pubmed/28071755 http://dx.doi.org/10.1038/srep40145 |
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author | Junker, Laura Verena Kleiber, Anita Jansen, Kirstin Wildhagen, Henning Hess, Moritz Kayler, Zachary Kammerer, Bernd Schnitzler, Jörg-Peter Kreuzwieser, Jürgen Gessler, Arthur Ensminger, Ingo |
author_facet | Junker, Laura Verena Kleiber, Anita Jansen, Kirstin Wildhagen, Henning Hess, Moritz Kayler, Zachary Kammerer, Bernd Schnitzler, Jörg-Peter Kreuzwieser, Jürgen Gessler, Arthur Ensminger, Ingo |
author_sort | Junker, Laura Verena |
collection | PubMed |
description | For long-lived forest tree species, the understanding of intraspecific variation among populations and their response to water availability can reveal their ability to cope with and adapt to climate change. Dissipation of excess excitation energy, mediated by photoprotective isoprenoids, is an important defense mechanism against drought and high light when photosynthesis is hampered. We used 50-year-old Douglas-fir trees of four provenances at two common garden experiments to characterize provenance-specific variation in photosynthesis and photoprotective mechanisms mediated by essential and non-essential isoprenoids in response to soil water availability and solar radiation. All provenances revealed uniform photoprotective responses to high solar radiation, including increased de-epoxidation of photoprotective xanthophyll cycle pigments and enhanced emission of volatile monoterpenes. In contrast, we observed differences between provenances in response to drought, where provenances sustaining higher CO(2) assimilation rates also revealed increased water-use efficiency, carotenoid-chlorophyll ratios, pools of xanthophyll cycle pigments, β-carotene and stored monoterpenes. Our results demonstrate that local adaptation to contrasting habitats affected chlorophyll-carotenoid ratios, pool sizes of photoprotective xanthophylls, β-carotene, and stored volatile isoprenoids. We conclude that intraspecific variation in isoprenoid-mediated photoprotective mechanisms contributes to the adaptive potential of Douglas-fir provenances to climate change. |
format | Online Article Text |
id | pubmed-5223217 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-52232172017-01-17 Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances Junker, Laura Verena Kleiber, Anita Jansen, Kirstin Wildhagen, Henning Hess, Moritz Kayler, Zachary Kammerer, Bernd Schnitzler, Jörg-Peter Kreuzwieser, Jürgen Gessler, Arthur Ensminger, Ingo Sci Rep Article For long-lived forest tree species, the understanding of intraspecific variation among populations and their response to water availability can reveal their ability to cope with and adapt to climate change. Dissipation of excess excitation energy, mediated by photoprotective isoprenoids, is an important defense mechanism against drought and high light when photosynthesis is hampered. We used 50-year-old Douglas-fir trees of four provenances at two common garden experiments to characterize provenance-specific variation in photosynthesis and photoprotective mechanisms mediated by essential and non-essential isoprenoids in response to soil water availability and solar radiation. All provenances revealed uniform photoprotective responses to high solar radiation, including increased de-epoxidation of photoprotective xanthophyll cycle pigments and enhanced emission of volatile monoterpenes. In contrast, we observed differences between provenances in response to drought, where provenances sustaining higher CO(2) assimilation rates also revealed increased water-use efficiency, carotenoid-chlorophyll ratios, pools of xanthophyll cycle pigments, β-carotene and stored monoterpenes. Our results demonstrate that local adaptation to contrasting habitats affected chlorophyll-carotenoid ratios, pool sizes of photoprotective xanthophylls, β-carotene, and stored volatile isoprenoids. We conclude that intraspecific variation in isoprenoid-mediated photoprotective mechanisms contributes to the adaptive potential of Douglas-fir provenances to climate change. Nature Publishing Group 2017-01-10 /pmc/articles/PMC5223217/ /pubmed/28071755 http://dx.doi.org/10.1038/srep40145 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Junker, Laura Verena Kleiber, Anita Jansen, Kirstin Wildhagen, Henning Hess, Moritz Kayler, Zachary Kammerer, Bernd Schnitzler, Jörg-Peter Kreuzwieser, Jürgen Gessler, Arthur Ensminger, Ingo Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances |
title | Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances |
title_full | Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances |
title_fullStr | Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances |
title_full_unstemmed | Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances |
title_short | Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances |
title_sort | variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four douglas-fir provenances |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5223217/ https://www.ncbi.nlm.nih.gov/pubmed/28071755 http://dx.doi.org/10.1038/srep40145 |
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