PR1 — Oryza sativa Japonica

Summary

OsPR1 (OS01G0382400) encodes a CAP-domain-containing protein of the V5 allergen-like family, annotated with cytokine activity and protein binding. In rice, the gene is associated with defense responses, including systemic acquired resistance, induced systemic resistance, and responses to jasmonic acid, salicylic acid, and ethylene. It has been linked to cadmium and salt tolerance, as well as to grain size, plant height, chlorophyll content, and grain yield. The protein localizes to the secretory vesicle, vacuole, plant-type cell wall, and extracellular space. Studies of related genes in other species connect the PR1 family to salicylic acid-mediated defense, resistance to fungal pathogens such as Botrytis cinerea and Fusarium oxysporum, and insect and herbivore defense.