DH5α-elicited stomatal closure is abolished by low [CO₂] or high RH treatment.

Abstract

<p>A and B, Stomatal aperture and conductance in <i>V. faba</i> leaves dip-inoculated with mock or DH5α at 10⁸ CFU/ml under ambient or low CO₂ concentrations; C and D, Stomatal aperture and conductance in <i>V. faba</i> leaves dip-inoculated with mock or DH5α at 10⁸ CFU/ml under ambient and high RH conditions. Data from the epidermal bioassay are means of 120 stomatal aperture measurements from three replicates ±SEM. Data from the stomatal conductance experiment are means of measurements from 8–12 leaves (n = 4). Asterisks denote significant differences as analyzed by two-tailed t-test (***, P<0.001; **, P<0.01; *, P<0.05; ns, no statistical difference).</p