PR1 — Triticum turgidum subsp. durum

Summary

TRITD5AV1G027980, the durum wheat PR1 gene on chromosome 5A, encodes a protein containing a CAP (cysteine-rich secretory protein, antigen 5, and pathogenesis-related 1) domain, placing it in the V5-allergen-like family. The encoded product has been annotated with cytokine activity and protein binding functions. In durum wheat, this gene is associated with activation of immune response, cytokine production, defense responses to bacteria and other organisms, responses to salicylate, jasmonic acid, ethylene, and wounding, as well as sexual reproduction and morphogenesis. It is associated with systemic acquired resistance, disease resistance, salt tolerance, and defense against herbivores and pathogens including Rhizoctonia solani and aphids. The protein localizes to the extracellular space, plant-type cell wall, vacuole, and secretory vesicle. Studies of related genes in other species connect the PR1 family to salicylic acid-mediated defense, pathogen resistance, and abiotic stress tolerance.