PR1 — Oryza sativa Japonica

Summary

Rice gene OS07G0129200, symbol PR1 and also known as PR1A, encodes a protein belonging to the CAP superfamily, which includes the V5 allergen-like and CRISP-related domains. The product has been annotated with cytokine activity and protein binding functions. In rice, PR1 is associated with defense responses, jasmonic acid and ethylene signaling, and responses to phytohormones such as gibberellin. It has been linked to seedling and root phenotypes, as well as to traits including grain weight, grain yield, panicle number and length, plant height, chlorophyll content, salinity tolerance, and resistance to Rhizoctonia solani and Pseudomonas syringae. The protein localizes to the extracellular space, plant-type cell wall, vacuole, and secretory vesicles. Studies of related genes in other species connect the family to systemic acquired resistance, salicylic acid-mediated defense, and resistance to fungal and viral pathogens.