Figure 8.

Influence of orfamides (Orfamide A, B, and G) on rice blast symptoms caused by M. oryzae isolate VT5M1. Spores of M. oryzae were mixed with different concentrations of orfamides and sprayed on rice plants at the five-leaf stage. Disease was assessed 6 days post infection by counting the number of sporulating susceptible-type lesions on the fourth leaf of rice plants and expressed relative to control plants. Biocontrol assays were repeated independently for three times and showed similar results, data from one representative experiment are shown. Different letters indicate significant differences among different treatments (Mann-Whitney: n = 24; α = 0.05). Pictures show representative disease symptoms in the different treatments. Scale bar is 1 cm.