Suicidal Co-Degradation of the Phytochrome Interacting Factor 3 and Phytochrome B in Response to Light

摘要

Since the discovery of the founding member of the Phytochrome Interacting Factors (PIF3),PIFs have been shown to be 'hubs' for multiple signaling pathways and have taken center stage in many conferences and publications (Leivar and Monte,2014).PIF3 was originally discovered from a yeast two-hybrid screen using the C-terminal domain of a class of photoreceptor called phytochromes (phys) that specifically sense the red and far-red regions of ambient sunlight (Leivar and Quail,2011).The Arabidopsis thaliana genome encodes five phytochromes (phyA-phyE) and seven PIFs (PIF1,PIF3-PIF8) (Leivar and Quail,2011).