VP — Beta vulgaris subsp. vulgaris

Summary

BvVP (BVRB_8G193170) on sugar beet chromosome 8 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, auxin polar transport, sucrose metabolism, cold acclimation, stress response, and regulation of starch biosynthesis. It has been linked to leaf length, low temperature stress response, stomatal opening, abscisic acid sensitivity, and salt tolerance. The product localises to the tonoplast, vacuolar membrane, Golgi complex, endosome membrane, and chloroplast envelope. Studies of related genes in other species link the family to drought tolerance, phosphorus use efficiency, salt stress tolerance, biomass accumulation, and grain yield, while work in barley and wheat connects it to grain yield and root biomass.