Figure 6.

Induction of SAUR63 subfamily genes by auxin is not compromised in class-I TCP-deficient plants. A, Transcript levels of SAUR63 subfamily genes in wild-type and amiR-27 plants 4 h after a single treatment with 100 μM of the synthetic auxin picloram (+ PIC). Control plants (Mock) were mock-treated with solvent solution. Values are expressed as relative to wild type under control conditions and represent the mean ± se of three biological replicates. Asterisks indicate significant differences between control and treated plants of the same genetic background (P < 0.05; Student’s t test). B, Relative induction of SAUR63 subfamily genes by auxin in wild-type and amiR-27 plants. The fold induction of each gene, relative to mock-treated plants, is indicated.