Fig. 4.

Simulated apparent mesophyll conductance g _m,app (a) or intrinsic diffusional mesophyll conductance g _m,dif (b) as a function of C _i under ambient O₂ condition, with σ = 0.5 and ω = 0.5. g _m,app and g _m,dif were calculated using C _c derived either from the full FvCB model (solid lines) or from the A _j part of the model as in the variable J method (dashed lines). The arrow indicates the transition point from being A _c-limited to being A _j-limited. Input parameter values used for simulation are given in Figs. 2 and 3. Simulation used the method as described in Appendix A