Fig 4. Parameter fitting under two different phosphate levels.

Plants were grown at an intermediate light level (316 μmol m^-2 s^-1) and at two P_i regimes representing limiting conditions (10 μM, black curves) and intermediate conditions (100 μM, red curves). Simulations (continuous lines) and experimental data (Experiment 2, treatments A and B; dashed lines) are shown for shoot weight (A) and root weight (B), root fraction (C), P_i levels in shoot (D) and in root (E) and total P_i in plants (F). Error bars represent the standard deviations (N = 5).