Plastic and genetic responses of a common sedge to warming have contrasting effects on carbon cycle processes.

Autor: Walker TWN; School of Earth and Environmental Sciences, The University of Manchester, Manchester, M13 9PL, UK.; Centre for Ecology and Hydrology, Lancaster, LA1 4AP, UK.; Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, UK., Weckwerth W; Department of Ecogenomics & Systems Biology, University of Vienna, 1090, Vienna, Austria.; Vienna Metabolomics Centre (VIME), University of Vienna, 1090, Vienna, Austria., Bragazza L; Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), 1015, Lausanne, Switzerland.; Ecological Systems Laboratory (ECOS), École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.; Department of Life Science and Biotechnologies, University of Ferrara, 44100, Ferrara, Italy., Fragner L; Department of Ecogenomics & Systems Biology, University of Vienna, 1090, Vienna, Austria.; Vienna Metabolomics Centre (VIME), University of Vienna, 1090, Vienna, Austria., Forde BG; Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, UK., Ostle NJ; Centre for Ecology and Hydrology, Lancaster, LA1 4AP, UK.; Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, UK., Signarbieux C; Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), 1015, Lausanne, Switzerland.; Ecological Systems Laboratory (ECOS), École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland., Sun X; Department of Ecogenomics & Systems Biology, University of Vienna, 1090, Vienna, Austria.; Vienna Metabolomics Centre (VIME), University of Vienna, 1090, Vienna, Austria., Ward SE; Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, UK., Bardgett RD; School of Earth and Environmental Sciences, The University of Manchester, Manchester, M13 9PL, UK.
Jazyk: angličtina
Zdroj: Ecology letters [Ecol Lett] 2019 Jan; Vol. 22 (1), pp. 159-169. Date of Electronic Publication: 2018 Nov 22.
DOI: 10.1111/ele.13178
Abstrakt: Climate warming affects plant physiology through genetic adaptation and phenotypic plasticity, but little is known about how these mechanisms influence ecosystem processes. We used three elevation gradients and a reciprocal transplant experiment to show that temperature causes genetic change in the sedge Eriophorum vaginatum. We demonstrate that plants originating from warmer climate produce fewer secondary compounds, grow faster and accelerate carbon dioxide (CO 2 ) release to the atmosphere. However, warmer climate also caused plasticity in E. vaginatum, inhibiting nitrogen metabolism, photosynthesis and growth and slowing CO 2 release into the atmosphere. Genetic differentiation and plasticity in E. vaginatum thus had opposing effects on CO 2 fluxes, suggesting that warming over many generations may buffer, or reverse, the short-term influence of this species over carbon cycle processes. Our findings demonstrate the capacity for plant evolution to impact ecosystem processes, and reveal a further mechanism through which plants will shape ecosystem responses to climate change.
(© 2018 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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