PRR5 — Arabidopsis thaliana

Summary

AT5G24470 (PRR5) in Arabidopsis thaliana encodes a pseudo-response regulator with phosphorelay response regulator activity, blue light photoreceptor activity, and DNA-binding transcription factor activity. It is associated with the regulation of circadian rhythm, including photoentrainment, temperature compensation, and rhythmic processes, as well as the regulation of shade avoidance, photomorphogenesis, and photoperiodism. PRR5 has been linked to flowering time, biomass, and traits such as drought recovery, seedling vigor, leaf area, and photoperiod sensitivity. It localizes to the nucleus, cytosol, and mitochondria, and is associated with TOR signaling, auxin homeostasis, and starch breakdown. Studies of related genes in other species associate the family with plant height, meristematic activity, and apical dominance.