AGR — Pisum sativum

Summary

PSAT4G014160, designated AGR (also known as PIN2, EIR1, WAV6), encodes a member of the PIN-formed auxin efflux carrier family on garden pea chromosome 4LG4. The product exhibits auxin efflux transmembrane transporter activity, inositol-1,4-bisphosphate 1-phosphatase activity, and binds multiple phosphoinositides and salicylic acid. It localizes to the basal plasma membrane and auxin efflux carrier complex. The gene is associated with basipetal and acropetal auxin transport, gravitropism, phototropism, and responses to oxidative and cation stress. It is linked to numerous traits including root length and gravitropic response, shoot branching, leaf morphology, water use efficiency, stomatal resistance, stem senescence, ethylene and brassinosteroid sensitivity, and osmotic stress response. Related genes in other species are linked to gravitropic root growth, polar auxin efflux, salt and cadmium tolerance, and biomass production.