PR5 — Capsicum annuum

Summary

CaPR5 (T459_01446) on pepper chromosome 1 encodes a thaumatin-like protein with glucan endo-1,3-beta-D-glucosidase activity and IgE binding capacity. The gene is associated with defence responses, including innate immunity, hypersensitivity, metabolic burst, cell death, and defence against fungi. It is linked to responses to salicylate, ethylene, abscisic acid, and arachidonate, as well as salinity response and virus-induced PTGS. The product localises to the apoplast and extracellular space. CaPR5 has also been connected to agronomic traits such as plant height, stem diameter, leaf area index, and chlorophyll content. Related genes in other species link the family to glucan endo-1,3-beta-glucosidase activity (EC 3.2.1.39).