Fig. 8
From: Phytochromes transmit photoperiod information via the evening complex in Brachypodium
The EC integrates photoperiod information to control flowering in Brachypodium. Activity of ELF3 is controlled by light via phytochromes, particularly phyC. Long photoperiods lead to long periods of phyC activation and the inactivation of ELF3 and the EC. The EC auto-regulates its own activity by repressing LUX and ELF4L-4. The EC controls flowering by directly repressing the expression of key positive flowering regulators, including VRN1, 3 related MADS transcription factors, PPD1, GI, LNK1, and 2 and several members of the BBX family. Under long photoperiods, the accumulation of active phyCpfr results in the reduction of EC activity and upregulation of many floral activators, leading to the increase of FT expression and flowering. Genes are shown with grey boxes, and protein products in rectangles with rounded corners