Figure 4.

Impact of Loss of KfPPCK1 Activity on Gas Exchange Profiles and Vegetative Yield for Plants Subjected to Drought Stress.

(A) Drought-stressed whole plants (8-leaf-pair stage) were entrained under 12-h-light/12-h-dark cycles followed by release into constant LL conditions (100 µmol m⁻² s⁻¹ light at 15°C). The black data trace represents the wild type, blue rPPCK1-1, and red rPPCK1-3.

(B) to (E) Fresh ([B] and [C]) and dry ([D] and [E]) weight of aboveground biomass (shoot; [B] and [D]) and belowground tissues (roots; [C] and [E]) at maturity (138 d under greenhouse conditions) for the wild type, rPPCK1-1, and rPPCK1-3 under well-watered and drought-stressed conditions. n = 7 plants; error bars represent se of the mean. Asterisks indicate significant difference from the wild type based on Student’s t test: *P < 0.05 and ***P < 0.001.