Growth of bacteria within plant leaves. (A) Arabidopsis lines Col (Col-0 wild-type, RPS2/RPS2; DND1/DND1), rps2 (Col-0 rps2–201/rps2–201; DND1/DND1), and dnd1 (Col-0 RPS2/RPS2; dnd1/dnd1) inoculated with P. syringae pv. tomato DC3000 pV288 (avrRpt2+). (B) Arabidopsis lines Col-0 and dnd1 inoculated with isogenic P. syringae pv. tomato DC3000 differing by the presence (pAvrRpm1, filled symbols) or absence (pVSP61, open symbols) of avirulence gene avrRpm1 carried on plasmid pVSP61. Both plant lines are RPM1/RPM1 genotype. All data points are mean ± SD.