PR5 — Solanum tuberosum

Summary

StPR5 (PGSC0003DMG400003569) on potato chromosome 2 encodes a thaumatin-like protein with glucan endo-1,3-beta-D-glucosidase activity, IgE binding, and mRNA binding. It is localized to the apoplast, cell wall, vacuole, secretory vesicle, plasmodesma, membrane, and mitochondria. StPR5 is associated with late blight resistance in potato, as well as defense responses to bacteria, fungi, and viruses, systemic acquired resistance, cell death, and responses to abscisic acid, ethylene, UV-B, cadmium, and stress. It is linked to regulation of anthocyanin biosynthesis, killing of cells of other organisms, and DNA replication. The gene has been connected to osmotic stress response, proline accumulation, salt and drought tolerance, and resistance to Verticillium dahliae and Pseudomonas syringae. Studies of related genes in other species link the family to pathogen resistance, induced systemic resistance, herbivore defense, and seed germination under salt stress.