PR1 — Oryza sativa Japonica

Summary

OsPR1 (OS10G0191300) encodes a protein containing a CAP (cysteine-rich secretory protein, allergen V5, and pathogenesis-related 1) domain, placing it in the PR-1 family. The gene is associated with cytokine activity and protein binding. In rice, OsPR1 has been linked to seedling development, phytohormone responses including jasmonic acid, and defense responses such as systemic acquired resistance, immunity, and pathogen defense. It is also associated with responses to cadmium, salt stress, herbivory, and acid rain, as well as traits including grain yield, grain size, plant height, chlorophyll content, and anthocyanin content. The encoded protein localizes to the extracellular space, plant-type cell wall, vacuole, and secretory vesicles. Studies of related genes in other species link the PR-1 family to pathogen resistance, salicylic acid-mediated defense, and abiotic stress tolerance.