ACC4 — Solanum lycopersicum

Summary

SlACC4 (SOLYC02G063543.1) on tomato chromosome 2 encodes a 1-aminocyclopropane-1-carboxylate synthase and also carries transaminase, kinase, and ubiquitin-protein transferase activities. The gene is associated with the regulation of ethylene biosynthetic process, including its negative regulation, and with response to heat stress, response to organophosphorus, and response to K+ ion. SlACC4 has been linked to numerous fruit traits, including diameter, length, weight, firmness, color, ripening, lycopene and carotenoid content, and respiration rate. It is also connected to yield, shoot and root growth, leaf traits, flavonoid and sucrose content, nitrate uptake, bacterial disease response, and stress responses. The encoded protein localizes to the cell wall, vacuole, plastid, plasmodesma, and other compartments. Studies of related genes in other species link the family to responses to ethylene, IAA, wounding, and iron deficiency.