Figure 1

DC3000• avrB elicits systemic acquired resistance on the ndr1-1/npr1-2 double mutant and both single mutants Plants were either inoculated with 2 × 10⁷ bacteria mL^-1 DC3000•avrB (white bars) or not inoculated (black bars). Two days later, inoculated leaves were excised. Remaining leaves were pressure infiltrated using a syringe with 5 × 10⁴ bacteria mL^-1 DC3000•empty vector. Data points represent means of triplicate (Day 0) or quintuplicate (Day 2 or 4) determinations of in planta bacterial growth.