Figure 7. PIFs direct differential light-signal channeling to the phy-regulated transcriptional network.

Model depicting proposed quantitatively differential partitioning of transcriptional activation activity to shared direct-target genes, both by and between individual PIF-quartet members. Arrows represent the presence or absence and relative level (line thickness) of shared transcriptional activation of different direct-target genes by the individual PIFs in the dark. This representation is based on the data in Figure 5A and 5B. Light-activation of phy photoreceptors induces rapid proteolysis of the PIFs, reversing this transcriptional activity.