FIGURE 1.

Correlation between macerated surface and disease severity on Arabidopsis leaves infected with Dickeya dadantii. Leaves were inoculated with 5 μL of bacterial suspension. (A) Image representing stages of the disease severity index scale. (B) Leaf symptoms were scored according to the scale of 0–5 (Fagard et al., 2007). (C) Photographs were taken at indicated times after inoculation. Diseased areas were measured using the computer program ImageJ. (D) Correlation between DSI and LS 48 h p.i. Experiments were repeated at least three times. Data from one representative experiment are shown. Error bars: standard deviation. Mean were compared using Student’s T-test. n = 10–18. ^∗p-value < 0.05, ^∗∗p-value < 0.001.