Real-time qRT-PCR of BR-responsive genes in wild-type, bia1-1D, and CaMV35S::BIA1 plants. Real-time qRT-PCR of BIA1, DWF4, CPD, BAS1, CYP72C1, and TCH4 was carried out with RNA isolated from the aerial parts of 3-week-old wild-type (WT), bia1-1D, and CaMV35S::BIA1 plants. The fold expression was normalized relative to each gene in wild-type plants. Error bars represent sd of three replicate samples.