Figure 2.

Expression of Ghd7, Ehd1, Hd3a, and RFT1 in all possible single and double phytochrome mutants of rice under various daylength conditions. A to D, Quantitative reverse transcription (RT)-PCR analysis of Ghd7 (A), Ehd1 (B), Hd3a (C), and RFT1 (D). After plants were grown for 2 weeks under LD conditions, they were entrained under various daylengths for 5 d prior to sampling. The aboveground parts of the plants were collected at 3 h after dawn and used for RNA preparation. The x axis indicates daylength. The y axis indicates the expression levels relative to UBIQUITIN (UBQ), on a standard scale for A and a log scale for B to D. Bars and error bars indicate average values and sds, respectively, based on three biological repeats. Data are representative of at least three independent experiments.