Figure 1.

Exogenous MeJA enhanced disease resistance against F. graminearum. (A) GSR phenotype of whole seedlings of two-week-old B73 spayed with 100 µM of MeJA and that without MeJA treatment, followed by infection with F. graminearum. (B) the close-up of stems of partial Ctl.- and MeJA-treated seedlings shown in A. (C) the quantification of the percentage of diseased plants from A. The percentage of diseased plants was calculated based on the number of plants at each level over total plants. (D–F) endogenous contents of jasmonic acid and its analogs at different time points (hours post infection, hpi). Mock represents the treatment with H₂O. The data are the mean of three replicates. * indicates the statistical significance (p < 0.01) between mock and inoculation treatments at same time point analyzed by T-test.