PR2 — Capsicum annuum

Summary

CaPR2 (T459_01745) on pepper chromosome 1 encodes a glucan endo-1,3-beta-glucosidase with lichenase and O-glucosyl hydrolase activities, belonging to the glycosyl hydrolase 17 family. This vacuolar and extracellular protein is associated with defense responses, including induced systemic resistance, immune response, cell death, and hypersensitive response-programmed cell death. It is also linked to jasmonic acid signaling, virus-induced post-transcriptional gene silencing, nitrogen fixation, leaf formation, and carbohydrate metabolism. Associations with photosynthetic rate and plant height have been noted. Studies of related genes in tomato connect the family to disease and virus resistance, while broader sequence similarity links suggest connections to traits including drought tolerance, salt tolerance, fruit weight, starch content, germination rate, and water use efficiency.