Fig. 7.

Quantitative image analysis of core protein levels at 3 days post infection in tobacco leaves. PsbO (a), D1 (b), and PsaA (c) protein levels were evaluated. L-H represents leaves infiltrated with distilled water in the light; L-P represents leaves infiltrated with P. syringae pv. tabaci (Pst) in the light; D-H represents leaves infiltrated with distilled water in the dark; and D-P represents leaves infiltrated with Pst in the dark. For complete Western blots of PsbO, D1, and PsaA, please see Additional file 1, Additional file 2, Additional file 3. The relative signal density of mock controls was considered 100 %, while the signal density of Pst treatments were calculated as the percentage of density in mock controls. Means ± SE of three replicates are presented. Different letters above the columns indicate significant differences at P <0.05 between different treatments