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Leaf nonstructural carbohydrate residence time, not concentration, correlates with leaf functional traits following the leaf economic spectrum in woody plants

Journal Article · · New Phytologist
DOI:https://doi.org/10.1111/nph.20315· OSTI ID:2563346
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [1];  [10];  [1];  [11];  [12];  [13];  [14];  [1];  [8];  [1]
  1. Australian National University, Canberra (Australia)
  2. Australian National University, Canberra (Australia); University of Western Ontario, London, ON (Canada); Duke University, Durham, NC (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
  3. University of Canterbury, Christchurch (New Zealand)
  4. Max Planck Institute of Molecular Plant Physiology, Potsdam (Germany)
  5. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Washington State University, Pullman, WA (United States)
  6. University of Minnesota, St. Paul, MN (United States); University of Western Sydney, NSW (Australia). Hawkesbury Institute for the Environment; University of Michigan, Ann Arbor, MI (United States)
  7. Australian National University, Canberra (Australia); Imperial College, London (United Kingdom)
  8. University of Exeter, Devon (United Kingdom)
  9. Norwegian University of Life Sciences, Ås (Norway)
  10. Australian National University, Canberra (Australia); University of Western Sydney, NSW (Australia). Hawkesbury Institute for the Environment
  11. University of Toronto, ON (Canada)
  12. Australian National University, Canberra (Australia); University of Peradeniya (Sri Lanka)
  13. Columbia University, Palisades (United States); Columbia University, New York, NY (United States)
  14. Swedish University of Agricultural Sciences (SLU), Umea (Sweden)
Nonstructural carbohydrate (NSC) concentrations might reflect the strategies described in the leaf economic spectrum (LES) due to their dependence on photosynthesis and respiration. Here, we examined if NSC concentrations correlate with leaf structure, chemistry, and physiology traits for 114 species from 19 sites and 5 biomes around the globe. Total leaf NSC concentrations varied greatly from 16 to 199 mg g-1 dry mass and were mostly independent of leaf gas exchange and the LES traits. By contrast, leaf NSC residence time was shorter in species with higher rates of photosynthesis, following the fast-slow strategies in the LES. An average leaf held an amount of NSCs that could sustain one night of leaf respiration and could be replenished in just a few hours of photosynthesis under saturating light, indicating that most daily carbon gain is exported. Our results suggest that NSC export is clearly linked to the economics of return on resource investment.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
Australian Research Council (ARC); National Science Foundation (NSF); Natural Environment Research Council (NERC); USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2563346
Report Number(s):
PNNL-SA--207627
Journal Information:
New Phytologist, Journal Name: New Phytologist Journal Issue: 4 Vol. 246; ISSN 0028-646X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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