AGR — Pisum sativum

Summary

PSAT4G014200 (AGR, also known as PsPIN2) on chromosome 4LG4 encodes a member of the auxin efflux carrier family, possessing auxin efflux transmembrane transporter activity and inositol-1,4-bisphosphate 1-phosphatase activity, along with phosphatidylinositol phosphate and salicylic acid binding. The gene is associated with basipetal and acropetal auxin transport, detection of oxidative stress, and response to cation stress. It is linked to traits including gravity response, phototropism response, root length and architecture, shoot axis branching, leaf morphology, water use efficiency, stomatal resistance, stem senescence, ethylene sensitivity, brassinosteroid sensitivity, and radiation response. Localization evidence connects the product to the auxin efflux carrier complex, basal plasma membrane, and endoplasmic reticulum. Studies of related genes in other species link the family to gravitropic response, root growth direction, salt and osmotic stress tolerance, and biomass production.