PR1 — Zea mays

Summary

ZM00001EB299370, designated ZmPR1 on maize chromosome 7, encodes a CAP-domain protein of the V5 allergen-like family and is annotated with cytokine activity and protein binding. The gene is associated with activation of immune response, salicylic acid metabolism, and downregulation of photosynthesis, and its product localises to the secretory vesicle, vacuole, and plant-type cell wall. ZmPR1 is linked to disease resistance, systemic acquired resistance, and defense responses, as well as to drought tolerance, salt tolerance, and cold tolerance. It is also associated with agronomic traits including grain yield, grain weight, grain size, plant height, heading time, anthesis-silking interval, chlorophyll content, total soluble sugar content, anthocyanin content, and lignin content. Studies of related genes in other species connect the PR1 family to pathogen resistance, salicylic acid-mediated defense, and abiotic stress tolerance.