RLK — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.2HG0131780 (HvRLK) encodes a transmembrane receptor protein serine/threonine kinase with lectin domains, exhibiting histidine kinase activity, coreceptor activity, and sugar binding. This barley gene on chromosome 2H is associated with diverse biological processes including sporulation, pollen aperture formation, cytokinin signaling, immune response, defense against fungi and oomycetes, response to salicylate and heat, and regulation of growth and somatic embryogenesis. It is linked to stem rust and localizes to multiple cellular compartments including the plasmalemma, nucleus, ER, and mitochondria. Studies of related genes in other species connect the family to salt tolerance, drought tolerance, grain yield, cold tolerance, stomatal immunity, and ethylene homeostasis, though these associations are not yet established in barley.