PR1 — Triticum turgidum subsp. durum

Summary

TRITD5AV1G219320, the durum wheat gene TtPR1 on chromosome 5A, encodes a protein with a CAP (cysteine-rich secretory protein, allergen, and pathogenesis-related) domain, placing it in the PR-1 family. The gene product exhibits cytokine activity and protein binding. TtPR1 is associated with activation of immune response, cytokine production, and priming of cellular response to stress. It is linked to defense responses against bacteria, herbivores, and wounding, as well as responses to salicylic acid, jasmonic acid, and ethylene. Associations also include systemic acquired resistance, disease resistance, salt tolerance, and lateral root development. The protein localizes to the secretory vesicle, vacuole, plant-type cell wall, and extracellular space. Studies of related genes in other species connect the PR-1 family to pathogen resistance, salicylic acid-mediated defense, and abiotic stress tolerance.