PR5 — Solanum lycopersicum

Summary

SlPR5 (SOLYC01G111320.3) encodes a thaumatin-like protein with glucan endo-1,3-beta-D-glucosidase activity, belonging to the osmotin/thaumatin-like superfamily. It is associated with diverse biological processes including regulation of proline, lycopene, salicylic acid, auxin, ethylene, and chlorophyll anabolism, as well as response to cadmium, photoperiodism, and mRNA breakdown. The protein localizes to the apoplast, plant-type cell wall, vacuole, plasmodesma, secretory vesicle, membrane, and mitochondria. SlPR5 is associated with fruit shape, sugar content, seed size, and stomatal opening, and with phenotypes including disease resistance, fungal resistance, salt and drought tolerance, osmotic stress response, and resistance to Verticillium dahliae and Pseudomonas syringae. Studies of related genes in other species connect the family to pathogen resistance, late blight resistance, herbivore defense, and seed germination under salt stress.