PR1 — Oryza sativa Indica Group

Summary

BGIOSGA016932, designated OiPR1, encodes a protein belonging to the CAP (cysteine-rich secretory protein) superfamily, which includes the CRISP-related domain. The product exhibits cytokine activity and protein binding, and is associated with immune response activation, cytokine production, and defense responses to other organisms. In indica rice, OiPR1 has been linked to seedling and root traits, as well as responses to jasmonic acid, salicylic acid, ethylene, and gibberellin. It is also associated with pathogen resistance, including resistance to root-knot nematode, and with systemic acquired resistance. The protein localizes to the secretory vesicle, vacuole, plant-type cell wall, and extracellular space. Studies of related genes in other species associate the PR1 family with salicylic acid-mediated defense, systemic immunity, and resistance to fungal and viral pathogens.