AGR — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.6HG0615550, designated HvAGR on barley chromosome 6H, encodes a PIN-like auxin efflux carrier with auxin efflux transmembrane transporter activity, inositol-1,4-bisphosphate 1-phosphatase activity, and binding capabilities for various phosphoinositides and clathrin. The gene is associated with auxin signalling, IAA efflux, and clathrin-mediated endocytosis of PIN proteins. It is linked to tropism, regulation of cell polarization, endocytic recycling, stigma development, and responses to oxidative stress, cation stress, and boron levels. Traits associated with HvAGR include gravity response, phototropism, shoot growth angle, seed set percent, leaf vein morphology, root length, adventitious rootless, stem senescence, and sensitivity to blue light, ethylene, and herbicides. Studies of related genes in other species associate the family with plant height, tiller number, root system architecture, aluminium tolerance, and chilling stress responses.