FL1 — Lactuca sativa

Summary

LsFL1, located on chromosome 4 of garden lettuce (Lactuca sativa), encodes a protein containing a K-box domain. The gene product is associated with sequence-specific DNA binding, transcription coactivator activity, and protein dimerization. LsFL1 is associated with the regulation of flowering time, particularly through photoperiodism and vernalization response, as well as floral meristem identity and floral whorl development. It has been connected to traits including days to flowering, flower and inflorescence morphology, seed protein content, water use efficiency, leaf size, anthocyanin content, and responses to abiotic stresses such as high temperature, aluminum, and copper. Studies of related genes in other species link the family to flowering transition, vernalization sensitivity, and plant growth.