By tissue blotting of microperforated inoculated leaves using anti-CMV CP antibody, we found that there was a significantly smaller infection area per inoculated true leaf in 9DEL plants than in WT plants (Figures 3A,B right graphs); this difference was mainly due to a significantly lower infection focus number per leaf in 9DEL plants because there was no significant difference in focus size (Figures 3A,B left and middle graphs). The gene discussed is CP; the disease is infection.