Figure 5.

β‐Aminobutyric acid (BABA) effect on stomatal movements upon Pectobacterium carotovorum ssp. carotovorum (Pcc) SCC1 infection. Stomatal apertures in epidermal peels exposed to buffer MgSO₄ (Mock) or Pcc SCC1 [1 × 10⁶ colony‐forming units (cfu)/mL] were analysed at 1.5 and 5 h post‐inoculation (hpi). Results are shown as the mean (n > 60 stomata) ± standard error (SE). Asterisks indicate a significant difference from the water control based on Student's t‐test analysis (P < 0.001). Experiments were repeated three times with similar results.