PR5 — Solanum tuberosum

Summary

StPR5 (PGSC0003DMG400000573) on potato chromosome 3 encodes an osmotin protein belonging to the thaumatin-like superfamily and is annotated with glucan endo-1,3-beta-D-glucosidase activity, IgE binding, mRNA binding, and protein binding. The gene is associated with late blight resistance in potato and has been linked to defence responses against fungi, bacteria, and viruses, as well as systemic acquired resistance, cell death, and responses to abscisic acid, ethylene, UV-B, and cadmium. It is also associated with regulation of anthocyanin anabolism, osmotic stress response, proline accumulation, and tolerance to salt, drought, and Verticillium dahliae. The protein localises to the apoplast, plant-type cell wall, vacuole, plasmodesmata, and secretory vesicles. Studies of related genes in other species link the family to pathogen resistance, induced systemic resistance, herbivore defence, and seed germination under salt stress.