ACC4 — Cucumis sativus

Summary

CSA_2G353460 (ACC4, also known as ACS11) encodes a 1-aminocyclopropane-1-carboxylate synthase, a pyridoxal phosphate-dependent enzyme that catalyzes the committed step in ethylene biosynthesis. In cucumber, this gene is directly associated with unisexual flower development and sex differentiation. It is linked to the regulation of ethylene biosynthetic processes, carpel development, and responses to organophosphorus compounds and potassium ion starvation. The gene has been connected to numerous agronomically relevant traits including fruit ripening, yield, flowering time, leaf senescence, fruit shape, photosynthetic rate, bacterial disease response, and root system architecture traits such as lateral root number and root hair length. It is also associated with responses to low temperature stress, arsenic concentration, and ethylene sensitivity. Studies of related genes in other species link the family to iron acquisition, wounding response, and lateral root initiation.