Figure 1.

Disease severity rating and typical symptom development of oat cultivars responding to Pseudomonas syringae pv. coronafaciens infection over a period of 4 days post-inoculation (d.p.i.). (A) Disease severity scores for phenotypical symptom development in “Dunnart” (solid pink line) and “SWK001” (dashed red line) cultivars ranging from 0 = leaves are free of any visual symptoms to 8 = very severe wilting occurs (50% or more of leaves are yellow and wilted). (B) Following inoculation, the development of lesions on the “Dunnart” leaves were observed over time. Lesions started appearing from 1 d.p.i. and spread progressively over time. At 4 d.p.i. the lesions appear to cover a larger section of the leaf surface. In the “SWK001” cultivar severe symptoms can be seen as the leaves start yellowing from the tips at 2 d.p.i. and become more severe over time. At 4 d.p.i. the leaves start dying and appear shrivelled.