AGR — Phaseolus vulgaris

Summary

PHAVU_009G234200, designated PvAGR, encodes a member of the PIN-like auxin efflux carrier family, possessing auxin efflux transmembrane transporter activity and multiple phosphatidylinositol phosphate binding capabilities. In French bean, this gene is associated with basipetal and acropetal auxin transport, regulation of jasmonic acid biosynthesis, anthocyanin accumulation in response to UV light, detection of oxidative stress, and protein denaturation. It localizes to the auxin efflux carrier complex, basal plasma membrane, and endoplasmic reticulum. PvAGR is linked to numerous traits including root number, root hair length, lateral root length, root mass density, seedling hypocotyl length, leaf vein morphology, stem senescence, water use efficiency, stomatal resistance, brassinosteroid content and sensitivity, ethylene sensitivity, osmotic response sensitivity, and gravity response. Studies of related genes in other species connect the family to gravitropic response, root growth direction, cell elongation, salt tolerance, and biomass production.