ATP6 — Oryza sativa Indica Group

Summary

BGIOSGA003201 (ATP6, also known as OiPRX9, OiPRX5, OiPRX17, PRX9, ATP6, PER36, OiPER36, OiPER9, OiPRX72, PRX17, PRX36, PRX54) on chromosome 1 of indica rice encodes a haem peroxidase with lactoperoxidase and peroxidase activity, belonging to the secretory peroxidase family. The gene is associated with regulation of mitochondrial gene expression, RNA metabolism, cell wall polysaccharide breakdown and modification, mucilage extrusion from seed coat, anther wall tapetum development, lignin anabolism, nodulation, response to oxidative stress and other organisms, and H2O2 catabolic processes. It is linked to vacuole, plant-type cell wall, and extracellular localisation. 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.