Expression pattern of the ZFP5 gene. A, Quantitative RT-PCR analysis of ZFP5 expression in different tissues of wild-type plants. All values are normalized using an internal standard (UBQ10). Ros., Rosette leaf; Caul., cauline leaf; Fl., flower; Mat. stem, fully elongated first internode of the main stem; Dev. 1stbr., the first developing branch (lateral branch); Dev. 2ndbr., the second developing branch (lateral branch); Sil., silique. B, In situ hybridization of ZFP5 probes to developing inflorescence shoot sections. ZFP5 is expressed broadly in stems and inflorescence meristems (IM) and strongly in floral meristems (FM). The section hybridized with the antisense probe is shown on the left, while the one hybridized with the sense probe is shown on the right.