PR5 — Solanum lycopersicum

Summary

SlPR5 (SOLYC04G081550.3) encodes a thaumatin-like protein belonging to the osmotin/thaumatin-like superfamily, with glucan endo-1,3-beta-D-glucosidase activity and IgE binding capacity. This tomato gene on chromosome 4 is associated with diverse biological processes including regulation of proline, lycopene, salicylic acid, auxin, chlorophyll, and ethylene anabolism, as well as ergosterol anabolism, fermentation, photoperiodism, induced systemic resistance, and the response to host organisms. It localises to the apoplast and extracellular space. SlPR5 is associated with several agronomically relevant traits including fruit shape, sugar content, protein content, seed size, stomatal opening, and sensitivity to acid and abscisic acid. Related genes in other species connect the family to glucan endo-1,3-beta-glucosidase activity (EC 3.2.1.39).