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Title: Variation in short-term and long-term responses of photosynthesis and isoprenoid-mediated photoprotection to soil water availability in four Douglas-fir provenances

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep40145· OSTI ID:1395485
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [2];  [9];  [10]
  1. Univ. of Toronto, ON (Canada). Department of Biology, Graduate Programs in Cell & Systems Biology and Ecology & Evolutionary Biology; Forstliche Versuchs- und Forschungsanstalt Baden-Wurttemberg (Germany); Forschungszentrum Julich GmbH (Germany). Institute of Bio and Geosciences IBG-2, Plant Sciences
  2. Albert-Ludwigs University Freiburg (Germany). Chair of Tree Physiology, Institute of Forest Sciences
  3. Institute for Landscape Biogeochemistry, Leibniz Centre for Agricultural Landscape Research (ZALF), Muncheberg (Germany); Leuphana University of Luneburg (Germany). Institute of Ecology
  4. Forstliche Versuchs- und Forschungsanstalt Baden-Wurttemberg (Germany); HAWK University of Applied Sciences and Arts (Germany). Hildesheim/Holzminden/Gottingen, Faculty of Resource Management
  5. Univ. of Toronto, ON (Canada). Department of Biology, Graduate Programs in Cell & Systems Biology and Ecology & Evolutionary Biology; Forstliche Versuchs- und Forschungsanstalt Baden-Wurttemberg (Germany); Albert-Ludwigs University, Freiburg (Germany). Institute of Biology III, Faculty of Biology
  6. Institute for Landscape Biogeochemistry, Leibniz Centre for Agricultural Landscape Research (ZALF), Muncheberg (Germany); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). USDA Forest Service, Northern Research Station
  7. Albert-Ludwigs-University, Freiburg (Germany). Centre for Biosystems Analysis (ZBSA)
  8. Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum Munchen, Neuherberg (Germany)
  9. Institute for Landscape Biogeochemistry, Leibniz Centre for Agricultural Landscape Research (ZALF), Muncheberg (Germany); Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB) (Germany); Swiss Federal Research Institute WSL, Birmensdorf (Switzerland)
  10. Univ. of Toronto, ON (Canada). Department of Biology, Graduate Programs in Cell & Systems Biology and Ecology & Evolutionary Biology; Forstliche Versuchs- und Forschungsanstalt Baden-Wurttemberg (Germany)

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 CO2 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.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1395485
Journal Information:
Scientific Reports, Vol. 7; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (5)

Remotely sensing variation in ecological strategies and plant traits of willows in perialpine floodplains text January 2019
A review and meta‐analysis of intraspecific differences in phenotypic plasticity: Implications to forecast plant responses to climate change journal July 2019
Impact of Drought and Salinity on Sweetgum Tree (Liquidambar styraciflua L.): Understanding Tree Ecophysiological Responses in the Urban Context journal November 2019
Remotely Sensing Variation in Ecological Strategies and Plant Traits of Willows in Perialpine Floodplains journal July 2019
Foliar nitrogen metabolism of adult Douglas-fir trees is affected by soil water availability and varies little among provenances journal March 2018