RLK — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.6HG0590610, designated HvRLK on barley chromosome 6H, encodes a transmembrane receptor protein serine/threonine kinase with a legume lectin domain, exhibiting histidine kinase activity, sugar binding, and protein homodimerization activity. This gene is associated with diverse biological processes including sporulation, pollen aperture formation, somatic embryogenesis, cytokinin and brassinosteroid-mediated signalling, regulation of developmental growth, and immune responses such as defence against oomycetes and fungi, virus-induced PTGS, and inhibition of salinity response. It is linked to heat response, protein autophosphorylation, and histidyl-aspartyl phosphorelay. Localisation evidence places the product at the plasmalemma, cytosol, and pollen aperture. The gene has been linked to stem rust. Studies of related genes in other species link the family to additional receptor kinase functions.