Figure 4. Flux Balance Analysis of the C₂ photosynthetic pathway.

Predicted fluxes if (A) major amino acids and the corresponding oxoacids and dicarbonic acids are allowed to freely diffuse between cells, (B) the α-ketoglutarate and glutamate transfer between mesophyll and bundle sheath was constrained (C) additionally the transfer of alanine and pyruvate between mesophyll and bundle sheath was constrained (D) transfer of all nitrogen containing compounds except for glycine and serine, which are used by the C₂ cycle were constrained. Fluxes are given in µmol s⁻¹ m⁻². Values in brackets show minimum and maximum of flux resulting from flux variability analysis. Flux of dissolved gasses, sucrose, inorganic compounds and processes that carry flux below 1 µmol s⁻¹ m⁻² are not shown. The sums of absolute fluxes over the plasmodesmata for the different variants were (A): 17.8 µmol s⁻¹ m⁻²; (B): 18.4 µmol s⁻¹ m⁻²; (C): 19.0 µmol s⁻¹ m⁻²; (D): 22.1 µmol s⁻¹ m⁻². See Figure 4—source data 1 for plasmodesmatal fluxes.

DOI: http://dx.doi.org/10.7554/eLife.02478.012