Fig. 1. Molecular analysis and trichome phenotype of myb23 alleles. (A) Schematic illustration of the T-DNA insertions positions in the myb23-1 and myb23-2 alleles. (B) RT-PCR was conducted using MYB23 gene-specific primers for 30, 35 and 40 cycles. After 40 cycles, a weak band is visible in the myb23-2 mutant. Control RT-PCR was carried out with primers specific for the translation elongation factor EF1A4. (C) Three- and four-branched trichomes on wild-type (Col) leaf. (D) Two- and three-branched trichomes on the myb23-1 leaf.