Figure 7.

Activation kinetics of PPDK in leaf crude extract from M. × giganteus (MG) and maize (ZM) grown continuously at 25°C (25) or grown at 25°C and then at 14°C (14) for 14 d. The leaves were dark adapted for 10 h in their respective growth environments. The leaf discs were collected into liquid N₂ immediately before illumination and then at time points following illumination time points. The maximum activities of PPDK expressed on a leaf area basis were measured at 25°C as in Figure 4. Values are the means (±1 se) of five plants.