POX — Nicotiana attenuata

Summary

A4A49_42361 (POX, PERX) in coyote tobacco (Nicotiana attenuata) encodes a haem peroxidase (EC 1.11.1.7) with lactoperoxidase and peroxidase activities, heme binding, and metal binding. This secreted, plant-type cell wall protein is associated with polyamine breakdown, hydrogen peroxide catabolism, lignin anabolism, cell wall thickening, immune response, nodulation, cell cycle, cell division, cell death, and response to oxidative stress. The gene is associated with respiration rate, photosynthetic rate, and lignin content. Related genes in other species link the family to traits including drought recovery, root and shoot biomass, leaf chlorophyll content, cell membrane stability, and fruit firmness.