FG — Oryza sativa Japonica

Summary

OsFG (OS04G0497700) on rice chromosome 4 encodes a CONSTANS-like protein containing B-box zinc finger and CCT domains. The gene product is associated with diverse molecular functions including glutamate-tRNA ligase activity, protein N-GlcNAc transferase activity, histone methylase activities, and red/far-red light photoreceptor activity. OsFG is linked to flowering time regulation, heading date, photoperiod sensitivity, and domestication traits in rice. It is associated with flower formation, regulation of phytochrome signaling, carotenoid metabolism, chlorophyll breakdown, and circadian clock photoentrainment. The gene is associated with grain yield, grain plumpness, spikelet number, panicle traits, seed protein content, and stress responses including drought tolerance, disease resistance, and nematode resistance. Studies of related genes in other species link the family to trichome development, root architecture, senescence, and tuberization.