RR5 — Arabidopsis thaliana

Summary

AT3G48100 (ARR5, also known as ARABIDOPSIS THALIANA RESPONSE REGULATOR 2) encodes a response regulator protein with histidine phosphotransfer kinase activity, phosphorelay response regulator activity, and red/far-red light photoreceptor activity. It is associated with cytokinin response, root growth and lateral root emergence, as well as regulation of cytokinin-mediated signalling. The protein localises to the nucleus, cytoplasm, plastid and plasmodesma. ARR5 has been linked to numerous agronomic traits including biomass yield, photosynthetic ability, seed longevity, nitrogen and nitrate sensitivity, leaf angle, root branching, shoot fresh weight, drought tolerance, pathogen response, and cadmium concentration. It is also connected to responses to salinity stress and red light stimuli, and to processes such as leaf formation, organogenesis, and glucosinolate anabolism.