VP — Beta vulgaris subsp. vulgaris

Summary

BvVP (BVRB_9G219460) on sugar beet chromosome 9 encodes a PPase-energised H-pump with proton-translocating pyrophosphatase and inorganic diphosphatase activities. It is associated with proton transmembrane transport, establishment of transmembrane electrochemical gradients, auxin polar transport, sucrose metabolism, regulation of starch biosynthetic process, cold acclimation, response to stress, leaf development, embryo development ending in seed dormancy, and polar cell growth. The protein localises to the tonoplast, vacuolar membrane, Golgi, endosome, and chloroplast envelope. The gene is linked to leaf length, low temperature stress response, stomatal opening, abscisic acid sensitivity, and salt tolerance. Related genes in other species connect the family to drought tolerance, phosphorus use efficiency, salt stress tolerance, biomass accumulation, photosynthesis, and grain yield in barley and root biomass in wheat.