AGR — Phaseolus vulgaris

Summary

PHAVU_003G139600, also known as PvAGR or PvPIN2, encodes an auxin efflux carrier of the PIN-like family, with molecular functions including auxin efflux transmembrane transporter activity, inositol-1,4-bisphosphate 1-phosphatase activity, and phosphatidylinositol phosphate binding. In French bean, this gene is associated with basipetal and acropetal auxin transport, regulation of cell polarization, anthocyanin accumulation in response to UV light, and detection of oxidative stress. It is linked to numerous traits including root number, root hair length, lateral root length, gravity response, phototropism, leaf vein morphology, stem senescence, water use efficiency, stomatal resistance, brassinosteroid content and sensitivity, ethylene sensitivity, and osmotic response sensitivity. The protein localizes to the basal plasma membrane, auxin efflux carrier complex, and endoplasmic reticulum. Studies of related genes in other species connect the family to gravitropic response, root growth direction, cell elongation, and salt tolerance.