POX — Nicotiana attenuata

Summary

A4A49_38103 (symbol POX, also known as PERX or NaPOX) in coyote tobacco (Nicotiana attenuata) on scaffold05201 encodes a secretory haem peroxidase (EC 1.11.1.7) with lactoperoxidase and peroxidase activity, heme and metal binding. The encoded protein is associated with the plant-type cell wall and extracellular region. It is linked to hydrogen peroxide catabolism, response to oxidative stress, immune response, cell death, cell wall thickening, lignin anabolism, polyamine breakdown, glycan biosynthesis, DNA anabolism, nodulation, cell cycle, and cell division. Associations with respiration rate, photosynthetic rate, and lignin content have been noted. Studies of related genes in other species link the family to traits including drought recovery, root and shoot biomass, leaf chlorophyll content, fruit firmness, and flavonoid content.