HAK1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.3HG0297280 (HAK1) on barley chromosome 3H encodes a protein with leucine-rich repeat domains and a serine/threonine kinase catalytic domain, annotated as a transmembrane receptor protein serine/threonine kinase. It is associated with histone H2AS1 kinase activity, steroid binding, SNARE binding, and signaling receptor activity. The gene is linked to potassium uptake, regulation of innate immune response, response to salt, heat acclimation, stomatal complex development, and brassinosteroid sensitivity. It localizes to the membrane, plasmodesma, endosome, and nucleus. Studies of related genes in other species connect the family to potassium acquisition, salt and drought stress responses, grain yield, spikelet fertility, and pollen development, though these associations are not yet established in barley.