FL1 — Lactuca sativa

Summary

LsFL1 (FL1) on chromosome 4 of garden lettuce encodes a protein with a K-box domain and is annotated with sequence-specific DNA binding, transcription coactivator activity, and protein dimerization functions. The gene is associated with downregulation of the vernalization response and regulation of both short-day and long-day photoperiodism, flowering. It is also linked to floral meristem identity, floral whorl development, and shoot regeneration. Associations extend to days to flowering, photoperiod-sensitive flowering time, seed protein content, water use efficiency, leaf size, and responses to high temperature, salt, and aluminum stress. Studies of related genes in other species link the family to flowering transition, vernalization requirement, and thermosensitive flowering.