PR-1 — Nicotiana attenuata

Summary

A4A49_01386, the PR-1 gene on chromosome 11 of coyote tobacco (Nicotiana attenuata), encodes a protein belonging to the CAP (cysteine-rich secretory proteins, antigen 5, and pathogenesis-related 1) superfamily, specifically the V5 allergen-like and CRISP-related domain family. The gene is associated with defense responses, including systemic acquired resistance, induced systemic resistance, innate immunity, and immune response, as well as programmed cell death, leaf senescence, and abscission. It is linked to salicylic acid and jasmonic acid anabolism, auxin signaling, and virus-induced PTGS. Associations with traits include chlorophyll a and b content, carbohydrate content, and lignin content. The gene is also connected to pathogen, nematode, and disease resistance, and increased osmotic stress response. Studies of related genes in other species link the family to traits such as drought tolerance, disease tolerance, fruit firmness, and plant height.