SAT1 — Daucus carota subsp. sativus

Summary

DCAR_032248 (SAT1) in carrot (Daucus carota subsp. sativus) encodes a serine acetyltransferase, an enzyme with L-serine O-acetyltransferase activity (EC 2.3.1.30) and cysteine synthase activity, placing it at the entry point of cysteine biosynthesis. The gene is associated with sulfate assimilation, cysteine anabolism, and responses to sulfur starvation, cadmium, oxidative stress, salinity, and light intensity. SAT1 is linked to anthocyanin acylation and pigmentation, as well as regulation of anthocyanin anabolism. It has been connected to traits including sulfur content, cadmium concentration, submergence tolerance, leaf senescence, flowering time, seed development, and disease tolerance. The product localizes to chloroplast thylakoid and envelope, endosomes, and the apoplast. Studies of related genes in other species link the family to seed methionine content, cadmium tolerance, and oxidative stress tolerance.