ACS1 — Solanum lycopersicum

Summary

SlACS1 (SOLYC08G081535.1) encodes a 1-aminocyclopropane-1-carboxylate synthase with pyridoxal phosphate-dependent transaminase activity, and is also annotated with protein phosphatase and kinase-binding functions. In tomato, this gene is associated with fruit ripening, ACC accumulation, ethylene biosynthesis, and responses to waterlogging, hypoxia, salt stress, cadmium, iron deficiency, and nitrogen starvation. It is linked to fruit firmness, color, shape, and lycopene content, as well as carotenoid and anthocyanin levels, seed yield, germination rate, photosynthetic rate, stomatal resistance, and shoot branching. The gene product localizes to the cytosol, plastid, mitochondria, plasmalemma, and plant-type cell wall. Studies of related genes in other species connect the family to sex determination, leaf senescence, disease resistance, and abiotic stress tolerance.