PR-1 — Nicotiana attenuata

Summary

A4A49_16762 (PR-1) in coyote tobacco (Nicotiana attenuata) encodes a protein containing a CAP domain, characteristic of the PR-1 family. This gene is associated with defense responses, including systemic acquired resistance, induced systemic resistance, and immune response. It is linked to salicylic acid and jasmonic acid anabolism, as well as programmed cell death, leaf senescence, and abscission. Associations extend to pathogen and nematode resistance, and traits such as chlorophyll a and b content, carbohydrate content, and lignin content. The gene is also connected to secretion, vacuolar and extracellular localization, and auxin signaling. Studies of related genes in other species link the PR-1 family to pathogen resistance in tomato and potato, and to traits including drought tolerance, plant height, and fruit size.