Figure 4.

Central carbon and nitrogen metabolism of Arabidopsis thaliana active in most growth stages and conditions simulated. Full Calvin-Benson cycle was active in leaf during the light phases. A complete TCA cycle was mainly active at the dark phases of leaf and in light and dark phases of root. Full oxidative pentose phosphate pathway reactions were active at the dark phases in leaf plastid and in light and dark phases of root plastid. These pathways were omitted from the flux map for clarity. The thickness of the arrows is not scaled to relative flux magnitudes. Bold lines indicate reactions identified as essential by FVA under most of the growth days. RuBP, ribulose-1,5-bisphosphate; G3P, 3-phosphoglycerate; 2-PGly, 2-phosphoglycolate; GAP, glyceraldehyde 3-phosphate; Pi, inorganic phosphate; 2-OX, 2-oxoglutarate/α-ketoglutarate; GLU, glutamate; GLN, glutamine; OAA, oxaloacetate; FD_ox, oxidized-ferredoxins; FD_red, reduced-ferredoxins; ${\text{NO}}_2^{-}$, nitrite; H₂O₂, hydrogen-peroxide; GLYOX, glyoxylate; SER, serine; OH-PYR, hydroxypyruvate; GLY, glycine; THF, tetrahydrofolate; CH2-THF, 5,10-methylene-tetrahydrofolate; ASP, aspartate; PYR, pyruvate; G1P, glucose 1-phosphate; ISO-CIT, threo-isocitrate; ACoA, Acetyl-CoA.