PR5 — Cucumis sativus

Summary

CsPR5 (CSA_6G506000) on cucumber chromosome 6 encodes a protein with a thaumatin/chitinase-like domain and belongs to the osmotin/thaumatin-like superfamily, with glucan endo-1,3-beta-D-glucosidase activity and annotated functions including IgE binding, mRNA binding, and protein binding. The gene is associated with systemic acquired resistance, defence responses to bacteria and fungi, response to viruses, and regulation of anthocyanin anabolism. It is linked to responses to abscisic acid, ethylene, UV-B, and cadmium, and localises to the apoplast, plant-type cell wall, vacuole, plasmodesma, secretory vesicle, membrane, and mitochondria. Phenotypically, CsPR5 is associated with disease resistance, osmotic stress response, salt and drought tolerance, proline accumulation, insect resistance, and resistance to Verticillium dahliae and Pseudomonas syringae. Studies of related genes in other species link the family to pathogen resistance, induced systemic resistance, and seed germination under salt stress.