BIN1 — Solanum lycopersicum

Summary

SlBIN1 (SOLYC04G051510.1) on tomato chromosome 4 encodes a protein with a BRI1 island domain, leucine-rich repeats, and a serine/threonine kinase domain, and is annotated with transmembrane receptor protein tyrosine kinase activity, protein kinase inhibitor activity, and signaling receptor binding. In tomato, SlBIN1 is associated with heat tolerance, drought resistance, chilling stress tolerance, fruit yield, fruit ripening, carotenoid accumulation, lateral root development, xylem differentiation, and plant size. It is linked to brassinosteroid content, leaf angle, harvest index, fruit firmness, lycopene content, photosynthetic ability, and responses to water stress, temperature stress, aluminum, and aphids. The gene is also associated with negative regulation of brassinosteroid biosynthesis, pigment accumulation, cell wall organization, and localization to the plasma membrane, tonoplast, and endosomes. Studies of related genes in other species link the family to brassinosteroid signaling, photomorphogenesis, immunity, and salt resistance.