Figure 5.
The optimized distribution of nitrogen resources between photosynthetic enzymes for maximize light-saturated A. A, The ratio of optimal enzyme concentrations identified by the evolutionary algorithm required to reoptimize the system for a preindustrial atmospheric CO2 concentration (Ca) of 27.5 Pa, relative to today’s Ca of 39.45 Pa. In this simulation, Ci = 0.4 Ca was assumed (Leakey et al., 2004). B, The enzyme and transporter activities relative to Rubisco activity that optimization predicts for ambient CO2 concentration (Ca = 39.45 Pa). DHAP, Dihydroxyacetone phosphate; FBPase, fructose-bisphosphate. The capital letters in brackets are used to distinguish reactions that catalyzed by the same enzyme between different product or location. F, FBP; S, SBP; X, xylulose 5-phosphate; R, ribose 5-phosphate; M, mesophyll cell; B, bundle sheath cell.