Fig. 1. Leaf AGPase activities. (a) Total AGPase catalytic activity in the presence of
5 mM 3-PGA from Arabidopsis lines grown in ambient or high CO2. (b) Inhibition of
AGPase activity by Pi in the presence of 0.25 mM 3-PGA. Leaves were sampled 6 h
into the light period and AGPase activity was determined by the synthesis (forward)
assay as described previously