HOT1 — Oryza sativa Indica Group

Summary

BGIOSGA017714 (HOT1, OiHOT1) on chromosome 5 of Indica rice encodes heat shock protein 101, a ClpA/ClpB family ATPase with ATP hydrolase activity and protein-folding chaperone function. The gene is associated with responses to heat, high light intensity, hypoxia, and heat acclimation, as well as protein unfolding and refolding, memory, chloroplast stroma protein import, meiosis, and positive regulation of translation. It has been connected to thermotolerance, heat stress response and recovery, seed thermotolerance, flowering time, root growth, fruit production, and seedling growth and development. Localisation evidence links the product to the chloroplast envelope and stroma, mitochondria, nucleus, cytosol, Golgi complex, and plant-type vacuole. Studies of related genes in other species connect the family to acquired thermotolerance, tobamovirus infection resistance, organ size, and calcium signalling.