FL1 — Lactuca sativa

Summary

LsFL1, encoded by gene LSAT_V11C400162970 on lettuce chromosome 4, is a MADS-box transcription factor containing a K-box domain. It is associated with sequence-specific DNA binding, transcription coactivator activity, and protein dimerization. The gene is linked to the regulation of flowering time, particularly through photoperiodism and vernalization response, as well as floral meristem identity and floral whorl development. Associations extend to traits such as days to flowering, flower and inflorescence morphology, seed protein content, water use efficiency, leaf size, anthocyanin content, and responses to abiotic stresses including high temperature, salt, and aluminum. Localization evidence places the product in the nucleus and plasmalemma. Studies of related genes in other species link the family to flowering transition, vernalization sensitivity, and plant growth.