AGR — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.7HG0666880, designated HvAGR on barley chromosome 7H, encodes a PIN-like auxin efflux carrier. The product is annotated with auxin efflux and influx transmembrane transporter activities, inositol-1,4-bisphosphate 1-phosphatase activity, and various phosphatidylinositol phosphate binding functions. HvAGR is associated with tropism, detection of oxidative stress, regulation of endocytosis, phragmoplast microtubule organization, and cell polarization. It localizes to the auxin efflux carrier complex, basal and lateral plasma membranes, recycling endosomes, and clathrin-coated vesicles. The gene is linked to traits including gravity and phototropism response, seed set percent, shoot growth angle, leaf vein morphology, root length, anther and stamen morphology, and sensitivity to blue light, ethylene, manganese, and herbicides. Studies of related genes in other species connect the family to plant height, tillering, root architecture, aluminium tolerance, and chilling stress responses.