FB — Oryza sativa Japonica

Summary

OS01G0182600 (symbols FB, GI, OsGI, OsFB) on rice chromosome 1 encodes a protein with multiple annotated molecular functions including blue light photoreceptor activity, DNA-binding transcription repressor activity, protein N-GlcNAc transferase activity, and phosphatidylethanolamine binding. The gene is associated with rhythmic process, photoentrainment of circadian clock, temperature compensation of the circadian clock, downregulation of circadian rhythm, photoperiod-sensitive flowering time, vegetative to reproductive phase transition, and heading date. It is linked to xanthophyll metabolism, carotenoid metabolism, abscisic acid concentration, response to nitrate starvation, temperature stress response trait, and viral disease response trait. Associations with grain yield, tiller angle, stem length, whole plant size, and nitrogen sensitivity are also observed. Related genes in other species link the family to photoperiodic flowering, floral transition, circadian regulation, seed yield, and disease resistance.