Fig. 1.

a Means of net photosynthesis rates of Ler (black) and gin2-1 (orange) under normal (solid lines) and high light (dashed lines) conditions over a complete diurnal cycle (n = 9–13). Day and night are implicated with white and black bars on top. b Bar graphs of hexose phosphates (n = 3 or 4) within the first hour of the light phase, 8:00 to 9:00, under high light conditions in the gin2-1 mutant. Individual data points (black dots) are layered over the respective bar. c, d Schematic topology of the simulated models for central metabolism with the basic model in panel c and the final, complex model in panel d. CaAa carbonic- and amino acids, HP hexose phosphates, Suc sucrose, Glc glucose, Frc fructose, Exp export, SC structural carbon (all compounds with long residence time like cell wall or proteins), Mal/Fum malate and fumarate, Cit citrate, Aa amino acids. For detailed information of the reaction rates (r1 to r17) see Table 4