Fig. 5: The aphid resistance of wild-type chrysanthemum and CmMYB15-overexpressing chrysanthemum.

a Identification of CmMYB15-overexpressing chrysanthemum plants by PCR, in which the plasmid pMDC43-2 × 35 S::CmMYB15 acted as a positive control and wild-type (WT) acted as a negative control. -ox1, -ox2, -ox3 and -ox4 represent transgenic plants overexpressing CmMYB15, b transcription level of CmMYB15 in wild-type and CmMYB15-overexpressing chrysanthemum plants, c differential proliferation of aphids between CmMYB15-overexpressing and nontransgenic plants, d average number of aphids on CmMYB15-overexpressing and wild-type plants measured at 3–21 days after aphid infestation