Fig. 2.

Expression analysis of VdMYB1 in grapevine leaves treated with various defense signals. a Transcripts of VdMYB1 were measured in detached leaves of V. davidii cv. Tangwei infected with E. necator using qRT-PCR. b Expression profiles of VdMYB1 in response to exogenous plant defense signaling molecules (SA, MeJA) in the leaves of V. davidii. cv. Tangwei. Leaves sprayed with sterile water were used as a mock treatment. Leaves were collected at different time points as indicated (hpi, hours post-inoculation; hpt, hours post treatment). The VdGAPDH gene was used as an internal control. Error bars represent standard deviation (SD). Asterisks indicate statistically significant differences (*P < 0.05, **P < 0.01; Student’s t-test)