ATP6 — Oryza sativa Indica Group

Summary

BGIOSGA016419 (ATP6, also known as OiPRX9, OiPRX5, OiPRX17, PRX9, ATP6, PER36, OiPER36, OiPER9, OiPRX72, PRX17, PRX36, PRX54) on chromosome 4 of Indica rice encodes a secretory haem peroxidase (EC 1.11.1.7) with lactoperoxidase and peroxidase activities, heme binding, and metal binding. This gene is associated with regulation of mitochondrial gene expression, RNA metabolism, cell wall polysaccharide breakdown, plant-type cell wall modification, mucilage extrusion from seed coat, anther wall tapetum development, lignin anabolism, hydrogen peroxide catabolism, response to oxidative stress, and response to other organisms. It localizes to the vacuole, plant-type cell wall, and extracellular space. Associations include cytoplasmic male sterility, heterosis, photosynthetic rate, peroxidase-71 content, and phenotypes such as seed coat mucilage extrusion, pollen development, male fertility, tapetal cell wall integrity, and cold stress responses. Studies of related genes in other species link the family to lignin biosynthesis and secondary cell wall thickness.