PR1 — Oryza sativa Japonica

Summary

OsPR1 (OS07G0125201) on rice chromosome 7 encodes a CAP-domain-containing protein with cytokine activity and protein binding, belonging to the CRISP-related family. The gene is associated with immune response activation, cellular response to toxic substances, regulation of hormone levels, and appressorium formation. It has been linked to defense responses including systemic acquired resistance, induced systemic resistance, and responses to jasmonic acid, salicylic acid, and herbivores. Associations with agronomic traits include grain yield, grain size, plant height, chlorophyll content (including Chl a and Chl b), and anthocyanin content. The protein localizes to the secretory vesicle, vacuole, plant-type cell wall, and extracellular space. Studies of related genes in other species connect the family to pathogen resistance, salicylic acid-mediated defense, and abiotic stress tolerance.