SUS2 — Daucus carota subsp. sativus

Summary

DCAR_030174 (SUS2, DcSUS2) on carrot chromosome 9 encodes a protein with alpha-1,3-mannosyltransferase and transglycosidase activities, belonging to the ALG2 and glycosyltransferase families. The gene is associated with oligosaccharide-PP-dolichol assembly, cellulose anabolism, sucrose metabolism, root development, and signal transduction, and its product localises to the endomembrane system. In carrot, SUS2 is linked to sucrose content and sugar content. Studies of related genes in other species connect the family to fruit sweetness, fruit weight, fruit size, stem length, stem diameter, heterosis, and root mass density, though these associations are not yet established in carrot.