PR5 — Solanum lycopersicum

Summary

SlPR5 (SOLYC08G080660.1) on tomato chromosome 8 encodes a thaumatin-like protein belonging to the osmotin/thaumatin-like superfamily, with beta-glucanase and endo-1,3(4)-beta-glucanase activity. The protein localises to the vacuole, apoplast, cytoplasm and extracellular space. SlPR5 is associated with antifungal innate immune response, induced systemic resistance, and the regulation of proline, salicylic acid, ethylene, auxin, lycopene and chlorophyll anabolism. It has also been connected to photoperiodism, fermentation, mRNA breakdown, metabolic burst, and killing of cells of other organisms. Trait associations include fruit shape, sugar content, protein content, seed size, stomatal opening, and sensitivity to acid and abscisic acid. Studies of related genes in other species link the family to endo-1,3(4)-beta-glucanase activity.