RR1 — Phaseolus vulgaris

Summary

PvRR1 (PHAVU_003G110100) on chromosome 3 of French bean encodes a response regulator protein with histidine phosphotransfer kinase and phosphorelay response regulator activities, sequence-specific DNA binding, and transcription factor activity. It is associated with cytokinin signalling and response, including negative regulation of cytokinin-mediated signalling, cellular response to cytokinin stimulus, and regulation of cell division, root meristem size, and shoot apical meristem identity. The gene is linked to regulation of seed size, anthocyanin and phenylpropanoid metabolism, chlorophyll biosynthesis, and axillary shoot meristem initiation. Associations also include drought tolerance, abscisic acid sensitivity, photosynthetic efficiency, stomatal closure, ethylene sensitivity, wax accumulation, cuticle thickness, and reactive oxygen species accumulation. The protein localises to the nucleus, cytosol, plastid, and SCF complex.