PR1 — Triticum turgidum subsp. durum

Summary

TRITD5BV1G112400, designated TtPR1 on durum wheat chromosome 5B, encodes a protein containing a CAP (cysteine-rich secretory proteins, antigen 5, and pathogenesis-related 1) domain and a V5 allergen-like domain. The gene product is associated with cytokine activity and protein binding, and localises to the secretory vesicle, vacuole, plant-type cell wall, and extracellular space. TtPR1 is associated with defence responses against bacteria, herbivores, and wounding, as well as responses to salicylic acid, jasmonic acid, and ethylene. It has been linked to systemic acquired resistance, disease resistance, salt tolerance, and lateral root development. Additional associations include ochratoxin A anabolism, conidia formation, sexual reproduction, and morphogenesis. Studies of related genes in other species link them to salicylic acid-mediated defence and pathogen resistance, as well as jasmonate and ethylene signalling.