PR1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0519320 (HvPR1) on barley chromosome 5H encodes a protein containing a CAP (cysteine-rich secretory protein, allergen V5, and pathogenesis-related 1) domain, placing it in the PR-1 family. The protein is associated with cytokine activity and protein binding, and is localized to the secretory vesicle, vacuole, plant-type cell wall, and extracellular space. HvPR1 is associated with activation of immune response, defense response to other organisms, response to herbivore, response to wounding, response to salicylate, response to jasmonic acid, response to ethylene, leaf senescence, embryogenesis, and sexual reproduction. Associations with disease resistance, systemic acquired resistance, salt tolerance, and lateral root development have been reported. Studies of related genes in other species link the PR-1 family to pathogen resistance, systemic immunity, and abiotic stress tolerance.