PR5 — Solanum lycopersicum

Summary

SlPR5 (SOLYC08G080620.1) encodes a thaumatin-like protein belonging to the osmotin/thaumatin-like superfamily, with beta-glucanase and endo-1,3(4)-beta-glucanase activity. This tomato gene on chromosome 8 is associated with antifungal innate immune response, regulation of chemotaxis, aggression, and interaction with host. It has been connected to regulation of proline anabolism, ergosterol anabolism, siderophore anabolism, fatty acid breakdown, spore germination, and ALA metabolism. The protein localises to the vacuole, apoplast, extracellular space, and cytoplasm. SlPR5 is linked to several agronomically relevant traits including drought tolerance, plant height, leaf area index, chlorophyll content, fruit shape, sugar content, protein content, seed size, stem diameter, stomatal opening, proline content, and abscisic acid sensitivity. Studies of related genes in other species link the family to endo-1,3(4)-beta-glucanase activity.