INV1 — Daucus carota subsp. sativus

Summary

DCAR_020738 (DcINV1, also known as CWIN2, CWIN4, INVGE, and several other synonyms) on carrot chromosome 6 encodes a protein with domains including Glyco_hydro_32 and Fructan_Metab_Enzymes, and possesses sucrose alpha-glucosidase and beta-fructofuranosidase activities. This gene is associated with phloem unloading, carbohydrate storage, nectar secretion, and sucrose breakdown, and localises to the apoplast, plant-type cell wall, and pollen tube. The gene is linked to traits including carbohydrate, sucrose, and sugar content, as well as photosynthetic and respiration rates. Studies of related genes in other species connect the family to nectar production, seed development, and male sterility, and to cold-induced sweetening. The family has also been associated with root yield, fruit sweetness, grain size, and carotene content in other species.