ABSTRACT

This chapter demonstrates how one can predict leaf photosynthetic behavior as a function of environment experienced and physiological status. It discusses stomatal and CO2 flux resistances and considers how biochemical-physiological models are derived and how they are meshed with flux resistance models to create leaf photosynthesis models. The chapter presents a model and then discusses the validity of model assumptions. It also discusses aspects of leaf photosynthesis models, like temperature acclimation and developmental effects that have as yet received little attention. Electrical circuit analogues of the fluxes and resistances for CO2 in photosynthesis, respiration, and photorespiration have proven very useful in formulating mathematical models of net carbon fixation that include photorespiration and the effects of CO2 and O2 on carbon fixation and photorespiration. E. Maskell showed keen insight into the complexity of multiple factors which regulate net photosynthesis, including carboxylation resistance.