Figure 8.

Exogenous flavone induces blast resistance in Nipponbare cooperatively with KCN. Blast fungus-inoculated Nipponbare leaves detached at 1 dpi were treated with water, 0.5 mm KCN, 0.2 mm flavone, or both 0.5 mm KCN and 0.2 mm flavone in test tubes. A, Top, Phenotypes of the leaves at 4 dpi. Bottom, Phenotypes of the leaves at 4 dpi after staining with lactophenol-trypan blue. B, The number of SLs with an area of more than 0.5 mm² per leaf at 4 dpi. C, The amounts of M. oryzae DNA extracted from the similar leaves shown in A. Values for B and C are means ± se (n = 6).