Figure 7.

Circadian pattern of transcriptional regulation of QH6. A, Fluctuation of steady-state level of QH6 transcripts with day-night shifting (d 1–3); B, when plants were entrained by LL photoperiod, the oscillation pattern was in advanced cycles (d 4–8); and C, entrained by DD photoperiod, the oscillation was in delayed cycles (d 4–8). When plants were released from the entrainments, the original diurnal pattern of QH6 transcript fluctuation was resumed (d 9 and 10 in B and C). For each of the northern blots, the signal strength of QH6 was normalized against that of ubiquitin extension protein (UEP; internal control), and the relative percentage was plotted.