PR5 — Solanum tuberosum

Summary

PGSC0003DMG400004259 (PR5, also known as StPR-5, OSM-34, or StTLP-3) on potato chromosome 12 encodes a thaumatin-like protein belonging to the osmotin/thaumatin-like superfamily, with annotated beta-glucanase and glycosidase activities. The gene is associated with late blight resistance in potato and has been linked to antifungal innate immune responses, systemic acquired resistance, and defence responses to bacteria, fungi, and viruses. It is associated with responses to jasmonic acid, ethylene, abscisic acid, cadmium, UV-B, and osmotic stress, as well as to proline accumulation, anthocyanin regulation, cell death, and cell division. The protein localises to the apoplast, vacuole, cell wall, plasmodesmata, and secretory vesicles. Studies of related genes in other species link the family to pathogen resistance, induced systemic resistance, herbivore defence, seed germination under salt stress, and cell wall integrity.