PR-1 — Solanum lycopersicum

Summary

SOLYC08G068990.2, the tomato PR-1 gene on chromosome 8, encodes a CAP-domain-containing protein of the V5 allergen-like family. In tomato, PR-1 is associated with pathogen and herbivore resistance. The gene has been linked to induced systemic resistance, cell wall modification, the shikimate pathway, and responses to water. Associations with traits include fruit firmness, fruit size and shape, plant height, seedling vigor, chlorophyll and flavonoid content, and tolerance to drought, salt, and disease. The gene is also connected to vacuolar and extracellular localisation and to processes including viral life cycle, immune evasion, and interaction with host. Studies of related genes in other species link the family to late blight and Phytophthora infestans resistance, while cucumber studies connect it to defense responses.