PR5 — Cucumis sativus

Summary

CsPR5 (CSA_7G428900) on cucumber chromosome 7 encodes a protein with a thaumatin-like domain and belongs to the osmotin/thaumatin-like superfamily, with glucan endo-1,3-beta-D-glucosidase activity. The gene is associated with defence responses to bacteria, fungi, and viruses, as well as systemic acquired resistance and responses to abscisic acid, ethylene, UV-B, and cadmium. It is linked to regulation of anthocyanin anabolism, killing of cells of other organisms, and osmotic stress response. Phenotypic associations include disease resistance, salt and drought tolerance, insect resistance, proline accumulation, and resistance to Verticillium dahliae and Pseudomonas syringae. The protein localises to the apoplast, plant-type cell wall, secretory vesicle, vacuole, plasmodesma, and membrane. Studies of related genes in other species connect the thaumatin-like protein family to pathogen resistance, induced systemic resistance, nematode resistance, and seed germination under salt stress.