Figure 3.

CC9 Suppresses SA-Induced pr Gene Expression.

pr gene expression in maize leaves after treatment with 2 mM SA (+SA) compared with buffer controls (mock). Recombinant CC9 (0.5 μM), CC9^ia (0.5 μM), or E-64 (5 μM) was infiltrated at the same time as SA/mock treatment. qRT-PCR analysis shows expression of marker genes pr1, pr5, and prm6b 24 h after treatment. The experiment was performed in three biological replicates; error bars represent se; *P < 0.05. P values were calculated by an unpaired t test significant compared with pr gene expression of SA-treated plants.