RLK — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.6HG0564580 (HvRLK) on barley chromosome 6H encodes a transmembrane receptor protein serine/threonine kinase with histidine kinase activity, coreceptor activity, and sugar binding. The protein contains a legume lectin domain and belongs to the L-type lectin receptor kinase family. HvRLK is associated with immune response, including defense against fungi and oomycetes, upregulation of innate immunity, and virus-induced PTGS. It is linked to pollen development and aperture formation, sporulation, somatic embryogenesis, regulation of growth and developmental growth, and cytokinin and brassinosteroid-mediated signaling. The gene is also connected to inhibition of salinity response, response to heat, and protein autophosphorylation. Localization evidence places the product at the plasmalemma, cytosol, and pollen aperture. Additionally, HvRLK has been associated with stem rust. Studies of related genes in other species link the family to immune signaling and stress responses.