VP — Daucus carota subsp. sativus

Summary

DCAR_007674, designated DcVP on carrot chromosome 2, encodes a proton-translocating pyrophosphatase with inorganic diphosphatase activity, belonging to the PPase-energised H-pump family. The gene is associated with proton transmembrane transport, establishment of transmembrane electrochemical gradients, and localisation to the tonoplast, vacuolar membrane, Golgi, and endosomes. DcVP is linked to cell wall pectin metabolism, regulation of starch biosynthesis, sucrose metabolism, auxin polar transport, cold acclimation, salinity response, and abscisic acid sensitivity. Associations with leaf length, biomass yield, stomatal opening, root growth, fruit development, salt tolerance, and stress tolerance have been reported. Studies of related genes in other species link the family to drought tolerance, phosphorus use efficiency, grain yield, and root biomass, as well as root mass.