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. 2016 Mar 11;67(9):2699–2714. doi: 10.1093/jxb/erw104

Table 1.

Model input parameters, with their default values as derived from the literature or in this study

Symbol Definition Value Source
α Fraction of PSII activity in the bundle sheath 0.1 Chapman et al. (1980)
R m Mitochondrial respiration in the mesophyll 0.5R d von Caemmerer and Furbank (1999)
x Fraction of ATP allocated to the C4 cycle 0.4 von Caemmerer and Furbank (1999)
K p25 Michaelis–Menten constant of PEPc for CO2 at 25 °C 40 μbar Leegood and von Caemmerer (1989);
Pfeffer and Peisker (1995)
K mC25 Michaelis–Menten constant of Rubisco for CO2 at 25 °C 485 μbar Cousins et al. (2010)
K mO25 Michaelis–Menten constant of Rubisco for O2 at 25 °C 146 000 μbar Cousins et al. (2010)
γ*25 Half the reciprocal of Rubisco specificity at 25 °C 0.0001747 Cousins et al. (2010)
E Vcmax Activation energy for V cmax (maximum Rubisco activity) 53.4 kJ mol−1 Sage (2002);
Kubien et al. (2003);
Perdomo et al. (2015)
E γ* Activation energy for γ* 27.4 kJ mol−1 Derived from data of
Jordan and Ogren (1984)
E KmC Activation energy for K mC 35.6 kJ mol−1 Perdomo et al. (2015)
E KmO Activation energy for K mO 15.1 kJ mol−1 Derived from results of
Perdomo et al. (2015)
E Vpmax Activation energy for V pmax (maximum PEPc activity) 37.0 kJ mol−1 Derived from data of
Chinthapalli et al. (2003)
D Vpmax Deactivation energy for V pmax 214.5 kJ mol−1 Derived from data of
Chinthapalli et al. (2003)
S Vpmax Entropy term for V pmax 0.663 kJ K−1 mol−1 Derived from data of
Chinthapalli et al. (2003)
E Kp Activation energy for K p 68.1 kJ mol−1 Estimated in our report (see text)
E gm Activation energy for g m (mesophyll conductance) 49.6 kJ mol−1 Bernacchi et al. (2002)
D gm Deactivation energy for g m 437.4 kJ mol−1 Bernacchi et al. (2002)
S gm Entropy term for g m 1.4 kJ K−1 mol−1 Bernacchi et al. (2002)

PEPc, phosphoenolpyruvate carboxylase; PSII, photosystem II.