PR2 — Capsicum annuum

Summary

CaPR2 (T459_06853) on pepper chromosome 2 encodes a glucan endo-1,3-beta-D-glucosidase with lichenase and O-glucosyl hydrolase activities, belonging to the glycosyl hydrolase family 17. The protein is localised to the vacuole and extracellular space. CaPR2 is associated with defense responses, including induced systemic resistance, immune response, hypersensitive response cell death, and virus-induced post-transcriptional gene silencing. It is also linked to nitrogen fixation, leaf formation, jasmonic acid signaling, and carbohydrate metabolism. Trait associations include photosynthetic rate and plant height. Studies of related genes in tomato link the family to disease and virus resistance, while broader sequence similarity connections suggest associations with drought tolerance, salt tolerance, fruit weight, starch content, and water use efficiency.