AGR — Brachypodium distachyon

Summary

BdAGR (BRADI_3G59520V3) on chromosome 3 of Brachypodium distachyon encodes a protein with auxin efflux carrier and auxin influx transmembrane transporter activities, as well as inositol-1,4-bisphosphate 1-phosphatase activity and multiple phosphatidylinositol phosphate binding functions. It belongs to the PIN-like auxin efflux carrier family. The gene is associated with tropism, detection of oxidative stress, regulation of endocytosis, phragmoplast microtubule organization, and cell polarization. It has been linked to flower formation, gravity response, phototropism, and traits including seed set, shoot growth angle, leaf vein morphology, root length, anther and stamen morphology, and responses to blue light, ethylene, gibberellic acid, and osmotic stress. Localization evidence connects it to the auxin efflux carrier complex, basal plasma membrane, recycling endosome, and clathrin-coated vesicles. Studies of related genes in other species link the family to plant height, tiller number, root system architecture, and aluminum tolerance.