Figure 7. Change in conductance in T-DNA insertion mutants after perturbation of steady-state conditions.

(A) Change of [CO₂] from 400 to 800 ppm (relative humidity held constant at ∼65%). (B) Change of relative humidity to 25% (CO₂ held constant at 800 ppm). The data are averaged values (± se) for 4 to 5 plants for each genotype. The T-DNA insertion lines tested are as in Figure 5. WT, wild type; _*p<0.05;+p<0.1.