FG (BGIOSGA022685) — Oryza sativa Indica Group

Summary

BGIOSGA022685 (Hd1, also known as FG) on chromosome 6 of Indica rice encodes a CONSTANS-like protein containing B-box zinc-finger and CCT domains. The gene is associated with heading date, flowering, growth, and domestication in rice, and has been linked to grain yield, spikelet number, panicle traits, and height. It is associated with photoperiodic flowering regulation, including responses to short-day and long-day conditions, as well as phytochrome signaling, circadian clock entrainment, and chlorophyll breakdown. The gene is also associated with traits such as seed protein content, iron content, nitrogen sensitivity, and stress responses including drought and water stress. Studies of related genes in other species link the family to flowering time, light responsiveness, drought tolerance, and root architecture.