ACC4 — Solanum lycopersicum

Summary

SlACC4 (SOLYC02G063540.3) on tomato chromosome 2 encodes a 1-aminocyclopropane-1-carboxylate synthase, a pyridoxal phosphate-dependent enzyme. The gene is associated with the regulation of ethylene biosynthetic processes, including negative regulation, and is linked to fruit ripening, fruit firmness, fruit color, fruit size, and lycopene and carotenoid content. It is also associated with yield, shoot and root growth and development, lateral root number, root hair length, leaf growth, photosynthetic rate, and stress responses including heat stress, bacterial disease response, and osmotic tolerance. Localisation evidence places the product in the cytosol, plastid, mitochondria, plasmalemma, and cell wall. Studies of related genes in other species link the family to responses to ethylene, wounding, and iron deficiency.