PR5 — Solanum tuberosum

Summary

StPR5 (PGSC0003DMG400006004) on potato chromosome 4 encodes an osmotin/thaumatin-like superfamily protein 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 is linked to defence responses against bacteria, fungi, and viruses, as well as systemic acquired resistance, cell death, and regulation of anthocyanin anabolism. It is associated with responses to abscisic acid, ethylene, UV-B, cadmium, and osmotic stress, and to traits including drought and salt tolerance, proline accumulation, and resistance to Verticillium dahliae and Pseudomonas syringae. The protein localises to the apoplast, plant-type cell wall, vacuole, plasmodesmata, secretory vesicles, membrane, and mitochondria. Studies of related genes in other species link the family to pathogen resistance, induced systemic resistance, herbivore defence, and seed germination under salt stress.