ATP6 — Sorghum bicolor

Summary

SORBI_3003G121000 (SbATP6) on sorghum chromosome 3 encodes a secretory peroxidase (EC 1.11.1.7) with haem-binding and lactoperoxidase activity. The gene is associated with cell wall polysaccharide breakdown, lignin anabolism, plant-type cell wall modification, and hydrogen peroxide catabolism. It is linked to anther wall tapetum development, pollen development, male fertility, tapetal cell wall integrity, and seed coat mucilage extrusion. Associations also include cytoplasmic male sterility, photosynthetic rate, and peroxidase-71 content. The encoded protein localises to the vacuole, plant-type cell wall, and extracellular space. Studies of related genes in other species link the family to lignin biosynthesis and secondary cell wall thickness, as well as root, shoot, flower, pollen, and cold stress responses.