Figure 1.

Changes in gas‐exchange capacity (g _smax) driven by genetic regulators of stomatal development are correlated with changes in leaf photosynthetic potential (V _cmax). Arabidopsis thaliana Col‐0 plants were grown at three different fluence rates (50, 100, and 200 μmol photons m⁻² s⁻¹), while all other genotypes were grown at 100 μmol photons m⁻² s⁻¹. All individuals were grouped by genotype or light treatment and the mean values of each group were used for the regression model, which showed a positive correlation between g _smax (the maximum rate of stomatal conductance as defined by stomatal size and density) and V _cmax (the maximum rate of Rubisco carboxylation) (R ² = 0.934, P < 0.001, no. of individuals = 46). Error bars are ±SEM.