Walker, Tom W. N.;
Weckwerth, Wolfram;
Bragazza, Luca;
Fragner, Lena;
Forde, Brian G.;
Ostle, Nicholas J.;
Signarbieux, Constant;
Sun, Xiaoliang;
Ward, Susan E.;
Bardgett, Richard D.
Plastic and genetic responses of a common sedge to warming have contrasting effects on carbon cycle processes
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Medientyp:
E-Artikel
Titel:
Plastic and genetic responses of a common sedge to warming have contrasting effects on carbon cycle processes
Beteiligte:
Walker, Tom W. N.;
Weckwerth, Wolfram;
Bragazza, Luca;
Fragner, Lena;
Forde, Brian G.;
Ostle, Nicholas J.;
Signarbieux, Constant;
Sun, Xiaoliang;
Ward, Susan E.;
Bardgett, Richard D.
Beschreibung:
<jats:title>Abstract</jats:title><jats:p>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 <jats:italic>Eriophorum vaginatum</jats:italic>. We demonstrate that plants originating from warmer climate produce fewer secondary compounds, grow faster and accelerate carbon dioxide (<jats:styled-content style="fixed-case">CO</jats:styled-content><jats:sub>2</jats:sub>) release to the atmosphere. However, warmer climate also caused plasticity in <jats:italic>E. vaginatum</jats:italic>, inhibiting nitrogen metabolism, photosynthesis and growth and slowing <jats:styled-content style="fixed-case">CO</jats:styled-content><jats:sub>2</jats:sub> release into the atmosphere. Genetic differentiation and plasticity in <jats:italic>E. vaginatum</jats:italic> thus had opposing effects on <jats:styled-content style="fixed-case">CO</jats:styled-content><jats:sub>2</jats:sub> 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.</jats:p>