SSA — Daucus carota subsp. sativus

Summary

DCAR_002483 (DcSSA, also known as DcSUS2) on carrot chromosome 1 encodes a sucrose synthase enzyme (EC 2.4.1.13) with sucrose synthase activity, belonging to the sucrose synthase family and containing SUS_N and Glyco_trans_1 domains. The enzyme is associated with sucrose, starch, and cellulose metabolism, as well as responses to carbon dioxide, anoxia, and hypoxia. It has been linked to root development, brassinosteroid-mediated signalling, protein tetramerization, and signal transduction. The protein localizes to multiple cellular compartments including the cytosol, nucleus, chloroplast stroma, plastid, plasmalemma, mitochondria, plasmodesmata, and plant-type cell wall. DcSSA is associated with sucrose and sugar content, root morphology, oxygen deficiency tolerance, starch synthesis, metabolic homeostasis, seed development timing, and hydraulic conductivity. Related genes in other species connect the family to seed maturation, seed storage product biosynthesis, and seed development.