ACS4 — Triticum aestivum

Summary

TRAESCS3B02G125200 (TaACS4) on wheat chromosome 3B encodes a 1-aminocyclopropane-1-carboxylate synthase, an enzyme with pyridoxal phosphate-dependent transaminase and lyase activities that catalyzes the committed step in ethylene biosynthesis. The gene is associated with negative regulation of ethylene biosynthesis, fruit ripening, lateral root formation, auxin and brassinosteroid signaling, and defense responses. It has been linked to grain weight, grain yield, plant height, flowering time, leaf senescence, root development traits, and responses to abiotic stresses including high temperature, salt, and hypoxia. The encoded protein localizes to the cytosol, plasma membrane, mitochondria, Golgi, and vacuole. Studies of related genes in other species connect the family to ethylene production, lateral root initiation, organ size, and responses to ABA, salt, and darkness.