Fig. 6

Relative expression of LeMDR in response to various treatments in the EV hairy roots of L. erythrorhizon by real-time PCR. The hairy roots of L. erythrorhizon were treated for 3 or 8 h with 100 μM shikonin (a) or 20 μM MeJA and 10 μM IAA (b). Results were normalized to GAPDH and are shown relative to the level in DMSO control hairy root (CK). The error bars represent standard deviation from three biological replicates. * P < 0.05, ** P < 0.01