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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...

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Autores principales: Junker, Laura Verena, Kleiber, Anita, Jansen, Kirstin, Wildhagen, Henning, Hess, Moritz, Kayler, Zachary, Kammerer, Bernd, Schnitzler, Jörg-Peter, Kreuzwieser, Jürgen, Gessler, Arthur, Ensminger, Ingo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
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.
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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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