, Volume 149, Issue 1, pp 78–90

A biochemical model of photosynthetic CO2 assimilation in leaves of C3 species

  • G. D. Farquhar
  • S. von Caemmerer
  • J. A. Berry

DOI: 10.1007/BF00386231

Cite this article as:
Farquhar, G.D., von Caemmerer, S. & Berry, J.A. Planta (1980) 149: 78. doi:10.1007/BF00386231


Various aspects of the biochemistry of photosynthetic carbon assimilation in C3 plants are integrated into a form compatible with studies of gas exchange in leaves. These aspects include the kinetic properties of ribulose bisphosphate carboxylase-oxygenase; the requirements of the photosynthetic carbon reduction and photorespiratory carbon oxidation cycles for reduced pyridine nucleotides; the dependence of electron transport on photon flux and the presence of a temperature dependent upper limit to electron transport. The measurements of gas exchange with which the model outputs may be compared include those of the temperature and partial pressure of CO2(p(CO2)) dependencies of quantum yield, the variation of compensation point with temperature and partial pressure of O2(p(O2)), the dependence of net CO2 assimilation rate on p(CO2) and irradiance, and the influence of p(CO2) and irradiance on the temperature dependence of assimilation rate.

Key words

Electron transport Leaf model Light and CO2 assimilation Ribulose bisphosphate carboxylase-oxygenase Temperature Photosynthesis (C3



ribulose bisphosphate




partial pressure of CO2


partial pressure of O2


photosynthetic carbon reduction


photorespiratory carbon oxidation


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Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • G. D. Farquhar
    • 1
  • S. von Caemmerer
    • 1
  • J. A. Berry
    • 2
  1. 1.Department of Environmental Biology, Research School of Biological SciencesAustralian National UniversityCanberra CityAustralia
  2. 2.Department of Plant BiologyCarnegie Institution of WashingtonStanfordUSA

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