AGR — Phaseolus vulgaris

Summary

PHAVU_009G234000, also known as PvAGR, PvPIN2 or PvEIR1, encodes an auxin efflux carrier of the PIN-like family on chromosome 9 of French bean (Phaseolus vulgaris). The product exhibits auxin efflux transmembrane transporter activity, inositol-1,4-bisphosphate 1-phosphatase activity, and binds various phosphatidylinositol phosphates and salicylic acid. PvAGR 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 localises to the basal plasma membrane and auxin efflux carrier complex. The gene is linked to numerous traits including root number, length and gravitropic response, phototropism, leaf vein morphology, stem senescence, water use efficiency, stomatal resistance, brassinosteroid content and sensitivity, ethylene sensitivity, and osmotic stress response. Studies of related genes in other species connect the family to gravitropic response, root growth direction, auxin efflux, and salt tolerance.