PR5 — Solanum lycopersicum

Summary

SlPR5 (SOLYC01G086840.3) encodes a thaumatin-like protein with glucan endo-1,3-beta-D-glucosidase activity, belonging to the osmotin/thaumatin-like superfamily. The protein is associated with diverse biological processes including regulation of proline, anthocyanin, auxin, chlorophyll, lycopene, and salicylic acid anabolism, as well as responses to cadmium, arachidonate, and host organisms. It localizes to the apoplast, plant-type cell wall, vacuole, plasmodesma, secretory vesicle, membrane, and mitochondria. SlPR5 is linked to agronomically important traits such as fruit shape, sugar content, protein content, seed size, and stomatal opening. It is associated with disease resistance against fungal pathogens including Verticillium dahliae and bacterial pathogens like Pseudomonas syringae, as well as salt tolerance, drought tolerance, osmotic stress response, and UV-B stress response. Studies of related genes in other species associate the family with late blight resistance, pathogen resistance, and seed germination under salt stress.