POX — Nicotiana attenuata

Summary

A4A49_29281 (symbol POX, also known as PERX or NaPOX) in coyote tobacco (Nicotiana attenuata, chromosome scaffold02228) encodes a secretory haem peroxidase (EC 1.11.1.7) with lactoperoxidase and peroxidase activity, heme binding, and metal binding. The encoded protein is localised to the plant-type cell wall and extracellular space. This gene is associated with polyamine breakdown, hydrogen peroxide catabolism, lignin anabolism, cell wall thickening, immune response, nodulation, cell cycle, cell death, cell division, and response to oxidative stress. It is also linked to respiration rate, photosynthetic rate, and lignin content. Studies of related genes in other species connect the family to traits including drought recovery, root and shoot biomass, leaf chlorophyll content, fruit firmness, and flavonoid content.