Inducible gene expression pattern of ZmTPS1, ZmKSL3, and ZmKSL5. A to D, Quantitative RT-PCR analysis for gene expression of three KSs with treatment of: A, F. graminearum spores inoculation; B, MeJA + EP; C, ABA; and D, MeJA. An2 was used as positive control. Leaves were collected at 0 (blue), 12 (red), 24 (green), and 48 (purple) h with treatment for all analysis except ABA treatment, in which root was treated and collected for quantitative RT-PCR analysis.