Figure 1.

In Planta Growth of Virulent Pst in Leaves 8 and 16 for 57 Days.

(A) Leaves 8 and 16 were inoculated with 10⁶ cfu/mL virulent Pst at ∼1-week intervals from 26 to 57 dag. In planta bacterial growth was monitored 3 days after inoculation (dai) and is presented as the mean of five samples ±se. In planta bacterial growth in leaf 8 at 26 dag was significantly different from in planta bacterial growth in leaves 8 and 16 at 40, 47, and 57 dag, as determined by Student's t test (P ≤ 0.05).

(B) In planta bacterial growth in mature Col-0 plants (42 dag) was measured over 3 dai (10⁶ cfu/mL virulent Pst) in leaves 8 and 16 and is presented as the mean of five samples ±se.

The experiments in both (A) and (B) were repeated two additional times with similar results.