PR5 — Capsicum annuum

Summary

CaPR5 (T459_09745) on pepper chromosome 3 encodes a thaumatin-like protein 1, a member of the osmotin/thaumatin-like superfamily with glucan endo-1,3-beta-D-glucosidase activity and IgE binding capacity. The gene is associated with defence responses including innate immunity, defence response to fungi, hypersensitivity, metabolic burst, cell death, and virus-induced PTGS, as well as immune response, signal transduction, and response to abscisic acid. It is linked to killing of cells of other organisms and localises to the apoplast and extracellular space. CaPR5 has been connected to agronomic traits including plant height, stem diameter, leaf area index, and chlorophyll content. Studies of related genes in other species link the thaumatin-like protein family to glucan endo-1,3-beta-D-glucosidase activity (EC 3.2.1.39).