Fig. 7

Preliminary model during flower opening and closure processes. During 7:00–23:00 light/23:00–6:00 dark photoperiod, the flowers gradually open from 7:00 to 14:00, and then followed by the closure process from 14:00 to 23:00. We divide the process into three stages: I. Rapid-response stage (7:00–10:00), involved in the upregulation of auxin signaling, cell wall modification and photoreaction events; II. Continuously blooming stage (10:00–14:00), involved in activation of auxin synthesis, auxin signaling, auxin efflux and vesicle trafficking; and suppression of transcriptional and translational events; III. Late-response stage (14:00–18:00), involved in the stimulation of processes including auxin signaling, auxin influx, cell wall synthesis and remodeling; and suppression of transcription. The upregulated pathways are marked red, and the downregulated pathways are marked blue