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Title: The relationship of leaf photosynthetic traits V cmax and Jmax - to leaf nitrogen, leaf phosphorus, and specific leaf area: A meta-analysis and modeling study

Great uncertainty exists in the global exchange of carbon between the atmosphere and the terrestrial biosphere. An important source of this uncertainty lies in the dependency of photosynthesis on the maximum rate of carboxylation (Vcmax) and the maximum rate of electron transport (Jmax). Understanding and making accurate prediction of C fluxes thus requires accurate characterization of these rates and their relationship with plant nutrient status over large geographic scales. Plant nutrient status is indicated by the traits: leaf nitrogen (N), leaf phosphorus (P), and specific leaf area (SLA). Correlations between Vcmax and Jmax and leaf nitrogen (N) are typically derived from local to global scales, while correlations with leaf phosphorus (P) and specific leaf area (SLA) have typically been derived at a local scale. Thus, there is no global-scale relationship between Vcmax and Jmax and P or SLA limiting the ability of global-scale carbon flux models do not account for P or SLA. We gathered published data from 24 studies to reveal global relationships of Vcmax and Jmax with leaf N, P, and SLA. Vcmax was strongly related to leaf N, and increasing leaf P substantially increased the sensitivity of Vcmax to leaf N. Jmax was strongly related to Vcmax,more » and neither leaf N, P, or SLA had a substantial impact on the relationship. Although more data are needed to expand the applicability of the relationship, we show leaf P is a globally important determinant of photosynthetic rates. In a model of photosynthesis, we showed that at high leaf N (3 gm 2), increasing leaf P from 0.05 to 0.22 gm 2 nearly doubled assimilation rates. Lastly, we show that plants may employ a conservative strategy of Jmax to Vcmax coordination that restricts photoinhibition when carboxylation is limiting at the expense of maximizing photosynthetic rates when light is limiting.« less
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [2] ;  [1]
  1. Univ. of Sheffield, Sheffield (United Kingdom)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Max Planck Institute for Biogeochemistry, Jena (Germany)
  4. James Cook Univ. Cairns, Queensland (Australia)
  5. Ciencias e Letras de Ribeirao Preto Av., Ribeirao Preto, (Brazil)
  6. Rothamsted Research Harpenden, Herts (United Kingdom)
  7. Univ. of Innsbruck, Innsbruck (Austria)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Ecology and Evolution
Additional Journal Information:
Journal Volume: 4; Journal Issue: 16; Journal ID: ISSN 2045-7758
Publisher:
Wiley
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; carbon assimilation; carbon cycle; carboxylation; DGVM; electron transport; Farquhar model; land surface model; meta-analysis; mixed-effect multiple regression; noncarbon photosynthesis; TBM
OSTI Identifier:
1265648

Walker, Anthony P., Beckerman, Andrew P., Gu, Lianhong, Kattge, Jens, Cernusak, Lucas A., Domingues, Tomas F., Scales, Joanna C., Wohlfahrt, Georg, Wullschleger, Stan D., and Woodward, F. Ian. The relationship of leaf photosynthetic traits V cmax and Jmax - to leaf nitrogen, leaf phosphorus, and specific leaf area: A meta-analysis and modeling study. United States: N. p., Web. doi:10.1002/ece3.1173.
Walker, Anthony P., Beckerman, Andrew P., Gu, Lianhong, Kattge, Jens, Cernusak, Lucas A., Domingues, Tomas F., Scales, Joanna C., Wohlfahrt, Georg, Wullschleger, Stan D., & Woodward, F. Ian. The relationship of leaf photosynthetic traits V cmax and Jmax - to leaf nitrogen, leaf phosphorus, and specific leaf area: A meta-analysis and modeling study. United States. doi:10.1002/ece3.1173.
Walker, Anthony P., Beckerman, Andrew P., Gu, Lianhong, Kattge, Jens, Cernusak, Lucas A., Domingues, Tomas F., Scales, Joanna C., Wohlfahrt, Georg, Wullschleger, Stan D., and Woodward, F. Ian. 2014. "The relationship of leaf photosynthetic traits V cmax and Jmax - to leaf nitrogen, leaf phosphorus, and specific leaf area: A meta-analysis and modeling study". United States. doi:10.1002/ece3.1173. https://www.osti.gov/servlets/purl/1265648.
@article{osti_1265648,
title = {The relationship of leaf photosynthetic traits V cmax and Jmax - to leaf nitrogen, leaf phosphorus, and specific leaf area: A meta-analysis and modeling study},
author = {Walker, Anthony P. and Beckerman, Andrew P. and Gu, Lianhong and Kattge, Jens and Cernusak, Lucas A. and Domingues, Tomas F. and Scales, Joanna C. and Wohlfahrt, Georg and Wullschleger, Stan D. and Woodward, F. Ian},
abstractNote = {Great uncertainty exists in the global exchange of carbon between the atmosphere and the terrestrial biosphere. An important source of this uncertainty lies in the dependency of photosynthesis on the maximum rate of carboxylation (Vcmax) and the maximum rate of electron transport (Jmax). Understanding and making accurate prediction of C fluxes thus requires accurate characterization of these rates and their relationship with plant nutrient status over large geographic scales. Plant nutrient status is indicated by the traits: leaf nitrogen (N), leaf phosphorus (P), and specific leaf area (SLA). Correlations between Vcmax and Jmax and leaf nitrogen (N) are typically derived from local to global scales, while correlations with leaf phosphorus (P) and specific leaf area (SLA) have typically been derived at a local scale. Thus, there is no global-scale relationship between Vcmax and Jmax and P or SLA limiting the ability of global-scale carbon flux models do not account for P or SLA. We gathered published data from 24 studies to reveal global relationships of Vcmax and Jmax with leaf N, P, and SLA. Vcmax was strongly related to leaf N, and increasing leaf P substantially increased the sensitivity of Vcmax to leaf N. Jmax was strongly related to Vcmax, and neither leaf N, P, or SLA had a substantial impact on the relationship. Although more data are needed to expand the applicability of the relationship, we show leaf P is a globally important determinant of photosynthetic rates. In a model of photosynthesis, we showed that at high leaf N (3 gm 2), increasing leaf P from 0.05 to 0.22 gm 2 nearly doubled assimilation rates. Lastly, we show that plants may employ a conservative strategy of Jmax to Vcmax coordination that restricts photoinhibition when carboxylation is limiting at the expense of maximizing photosynthetic rates when light is limiting.},
doi = {10.1002/ece3.1173},
journal = {Ecology and Evolution},
number = 16,
volume = 4,
place = {United States},
year = {2014},
month = {7}
}