HAK1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.3HG0297290, designated HAK1, encodes a protein with leucine-rich repeat domains and a serine/threonine kinase catalytic domain, possessing transmembrane receptor protein serine/threonine kinase activity, histone H2AS1 kinase activity, and steroid, SNARE, and signaling receptor binding functions. In barley, HAK1 is associated with potassium uptake, regulation of innate immune response, regulation of stomatal complex development, skotomorphogenesis, response to salt, heat acclimation, seedling development, embryo sac development, and plant ovule development. The gene product localizes to the plasmalemma, endosome, plasmodesma, nucleus, and cytosol. HAK1 is linked to brassinosteroid sensitivity, defense response, herbivore defense, shade avoidance, root elongation, and reduced brassinolide response. Related genes in other species are linked to seed setting rate, pollen development, potassium acquisition, grain yield, drought tolerance, chlorophyll content, and germination rate.