VP2 — triticum aestivum

Summary

TRAESCS7D02G142600 (symbol VP2, preferred name AVP1) on wheat chromosome 7D encodes a proton-translocating pyrophosphatase (EC 7.1.3.1) with inorganic diphosphatase activity and metal binding, belonging to the PPase-energised H-pump family. The gene is associated with vacuolar membrane localisation and linked to phloem loading, growth, cell differentiation, morphogenesis, membrane transport, and carbohydrate metabolism. Observed in bread wheat, AVP1 is associated with salt tolerance and heat tolerance. Associations include grain yield, shoot fresh weight, auxin content, drought tolerance, and high temperature stress response. The gene is also linked to seed development, auxin signalling, and regulation of seed size. Related genes in other species include H(+)-PPase.