HPD — Oryza sativa Indica Group

Summary

BGIOSGA039707 (symbol HPD, also known as PDS1, HPPD) in Indica rice encodes a 4-hydroxyphenylpyruvate dioxygenase, an iron-binding enzyme. The gene is associated with tyrosine breakdown, L-phenylalanine breakdown, vitamin E anabolism, inflorescence development, plastoquinone anabolism, carotenoid anabolism, and chlorophyll content. Its product has been detected in the cytosol, mitochondria and extracellular space. Studies of related genes in other species link the HPD family to hydroxyphenylpyruvate dioxygenase activity, herbicide binding and response, and to influences on tocopherol composition, tocotrienol production, chlorophyll retention and photosynthesis. Sequence similarity connections further associate the family with agronomic traits including grain yield, seed weight, plant height, seed germination, frost damage and leaf necrosis.