Fig. 1.

Genetic characterization and phenotype of cyp38 mutant plants. (A) Localization of T-DNA insertion sites in CYP38 genomic DNA of three cyp38 alleles: cyp38-1, cyp38-2, and cyp38-3. The CYP38 genomic DNA includes seven exons (black boxes) and six introns (bold lines between black boxes). ATG, initiation codon; TAA, stop codon. (B) CYP38 mRNA levels in wild type (WT), cyp38-1, cyp38-2, and cyp38-3 as shown by RT-PCR. (C) Phenotype of wild type, cyp38-1, cyp38-2, cyp38-3, and cyp38-2 transformed with CYP38 genomic DNA (cyp38-2C) grown for 7 weeks under low light (25–35 μmol·m⁻²·s⁻¹) with a long-day cycle (16–8 h). (D) The plants shown in C were exposed to illumination (300 μmol·m⁻²·s⁻¹) for 2 days after 7 weeks of growth in low light (25–35 μmol·m⁻²·s⁻¹).