Fig. 10. Expression of putative miRNA target genes and a miRNA precursor in response to photoperiod. (A) AP2 (purple), RAP2.7 (cyan), At5g60120 (green) and At5g67180 (red). Signals were normalized to the median for each gene. (B) Expression of MIR172a-2 analyzed by semi-quantitative RT-PCR. Because of background amplification, quantification using SYBR Green and real-time PCR was not possible. ß-tubulin was used as a control. (C) Expression profiles of SPL2 (cyan), SPL3 (light green), SPL4 (ochre), SPL6 (blue), SPL9 (brown), SPL10 (dark green), SPL11 (purple), SPL13 (teal) and SPL15 (pink). Signals were normalized to the median for each gene. Numbers on the x axis refer to days after transfer to long days.