INV1 — Daucus carota subsp. sativus

Summary

DcINV1 (DCAR_013407) on carrot chromosome 4 encodes a protein with glycosyl hydrolase family 32 domains and beta-fructofuranosidase and sucrose alpha-glucosidase activities. The gene is associated with phloem unloading, carbohydrate storage, nectar secretion, and sucrose breakdown, as well as root development, ovule development, and defence responses to bacteria and fungi. It localises to the apoplast, plant-type cell wall, and pollen tube. DcINV1 has been linked to carbohydrate content, sucrose content, sugar content, respiration rate, photosynthetic rate, and phenylpropanoid metabolism. Studies of related genes in other species connect the family to fruit sweetness, hexose content, root yield, grain size, cold-induced sweetening, male sterility, seed development, and nectar production.