OS09G0240200 — Oryza sativa Japonica

Summary

Os09g0240200, designated FG and also known as OsB, encodes a CONSTANS-like protein containing B-box zinc-finger and CCT domains. The gene is associated with a wide range of molecular functions including glutamate-tRNA ligase activity, protein N-GlcNAc transferase activity, histone methylase activities, and red/far-red light photoreceptor activity. In rice, FG is linked to flowering, heading date, growth, domestication, and leaf traits. The gene is associated with photoperiodic flowering regulation, including both upregulation and downregulation of short-day photoperiodism, as well as responses to long-day conditions, phytochrome signaling, and carotenoid metabolism. Associations extend to grain yield, spikelet number, panicle traits, grain plumpness, seed protein content, and stress responses including water stress, nitrogen sensitivity, and disease resistance. Studies of related genes in other species link the family to flowering time, light responsiveness, drought tolerance, and root architecture.