RLK — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.2HG0108930 (HvRLK) on barley chromosome 2H encodes a transmembrane receptor serine/threonine kinase with a legume lectin domain, exhibiting histidine kinase activity and sugar binding. This gene is associated with diverse biological processes including sporulation, pollen aperture formation, somatic embryogenesis, cytokinin signaling, and regulation of developmental growth. It is linked to defence responses against fungi and oomycetes, immune response, response to salicylate, and virus-induced PTGS, as well as inhibition of salinity response. The encoded protein localises to the plasmalemma, pollen aperture, ER, mitochondria, nucleus, cytosol, and plant-type vacuole. HvRLK is associated with stem rust. Studies of related genes in other species connect the family to salt tolerance, stomatal immunity, ethylene homeostasis, and grain yield.