RLK — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.2HG0109000 (HvRLK) on barley chromosome 2H encodes a protein with a legume lectin domain and a protein kinase domain, and is annotated with transmembrane receptor protein serine/threonine kinase activity, histidine kinase activity, sugar binding, and protein kinase activity. The gene is associated with pollen aperture formation, sporulation, rejection of self-pollen, somatic embryogenesis, regulation of growth, and defence responses including immune response, response to salicylate, and defence against fungi and oomycetes. It is also linked to cytokinin signalling, histidyl-aspartyl phosphorelay, virus-induced PTGS, and inhibition of salinity response. The protein localises to the plasma membrane, pollen aperture, endoplasmic reticulum, plant-type vacuole, mitochondria, cytosol, and nucleus. Associations with stem rust and growth phenotypes have been noted. Studies of related genes in other species link the family to salt tolerance, stomatal immunity, drought tolerance, grain yield, and cold tolerance.