ACC4 — Solanum lycopersicum

Summary

SlACC4 (SOLYC02G091990.3) on tomato chromosome 2 encodes a 1-aminocyclopropane-1-carboxylate synthase and also possesses transaminase, protein kinase, and ubiquitin-protein transferase activities. The gene is associated with ethylene biosynthesis and its regulation, as well as ethene metabolism, cytokinin breakdown, and lycopene anabolism. It has been linked to fruit ripening, fruit firmness, fruit color, fruit size, and yield traits, along with carotenoid and anthocyanin content, photosynthetic rate, and respiration rate. Associations also include responses to heat stress, flooding, and bacterial disease, as well as root and shoot growth traits, lateral root number, root hair length, and seed mucilage structure. Studies of related genes in other species link the family to cell wall function, plant immunity, flowering time, and freezing tolerance.