PR5 — Solanum tuberosum

Summary

StPR5 (PGSC0003DMG401016888) on potato chromosome 4 encodes a pathogenesis-related protein 5-like thaumatin family member with glucan endo-1,3-beta-D-glucosidase activity and IgE binding capacity. The protein localises to the apoplast and extracellular space. StPR5 is associated with defence responses, including systemic acquired resistance, induced systemic resistance, defence against fungi, and cell death. It has been connected to responses to stress, salinity, and the hormones abscisic acid, ethylene, and salicylate. Additional associations include DNA replication, cell division, nitric oxide storage, and response to arachidonate. Related genes in other species link the family to glucan endo-1,3-beta-glucosidase activity (EC 3.2.1.39).