PR1A — Nicotiana attenuata

Summary

A4A49_51589 (PR1A) in coyote tobacco (Nicotiana attenuata) encodes a pathogenesis-related protein 1 family member containing a CAP domain, characteristic of the V5 allergen-like superfamily. The gene is associated with defense responses, including systemic acquired resistance, immune response, hypersensitivity, and defense against other organisms. It is linked to jasmonic acid signaling, ethylene and phenylpropanoid anabolism, detoxification, and the inhibition of salinity response. PR1A has been associated with drought tolerance, resistance to Botrytis cinerea, seed maturation, and photosynthetic rate. The encoded protein localizes to the extracellular space and vacuole. Studies of related genes in other species link the PR1 family to bacterial wilt, nematode, and virus resistance, as well as to traits such as water use efficiency, chlorophyll content, and salt tolerance.