PR5 — Cucumis sativus

Summary

CsPR5 (CSA_5G604230) on cucumber chromosome 5 encodes a protein with a thaumatin/chitinase-like domain and belonging to the osmotin/thaumatin-like superfamily, and is associated with glucan endo-1,3-beta-D-glucosidase activity, mRNA binding, protein binding, and IgE binding. The gene is associated with defence responses against bacteria, fungi and viruses, systemic acquired resistance, and the regulation of anthocyanin anabolism. It is linked to responses to abscisic acid, ethylene, UV-B, cadmium and osmotic stress, and to traits including disease resistance, salt and drought tolerance, proline accumulation, and resistance to Verticillium dahliae and Pseudomonas syringae. The protein localises to the apoplast, plant-type cell wall, plant-type vacuole, plasmodesmata, secretory vesicles, mitochondria, membrane, and extracellular region. Studies of related genes in other species link the family to pathogen resistance, induced systemic resistance, nematode resistance, herbivore defence, seed germination under salt stress and cell wall integrity.