AVP1 — Arabidopsis thaliana

Summary

AT1G15690, also known as AVP1, encodes a H+-exporting diphosphatase (EC 7.1.3.1) with proton-translocating pyrophosphatase activity, localised to the tonoplast and vacuolar membrane. In Arabidopsis, AVP1 is associated with drought, salt, low nitrogen and phosphorus deficiency tolerance, as well as phosphorus use efficiency, cell wall integrity, and vacuolar acidification. The gene is linked to grain yield, seedling height, leaf area, root branching, phosphate and potassium uptake, proline and carotenoid content, and responses to high and low temperature stress. It has also been linked to photosynthesis, carbon partitioning, phloem loading, biomass accumulation, and organ development. Studies of related genes in other species link the family to root biomass, grain yield and fruit development traits.