AGR — Phaseolus vulgaris

Summary

PHAVU_009G234100, also known as PvAGR, encodes an auxin efflux carrier of the PIN-like family, with annotated molecular functions including auxin efflux transmembrane transporter activity, inositol-1,4-bisphosphate 1-phosphatase activity, and binding of various phosphatidylinositol phosphates and salicylic acid. 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, and brassinosteroid content and sensitivity. The gene product 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 root growth, polar auxin transport, and osmotic stress tolerance.