HPD — Oryza sativa Indica Group

Summary

BGIOSGA007064 (HPD, OiHPD) on chromosome 2 of Indica rice encodes a 4-hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27) that also carries a Myb-like DNA-binding domain and is annotated with DNA-binding transcription factor activity. The enzyme is associated with tyrosine and L-phenylalanine breakdown, vitamin E, plastoquinone and carotenoid anabolism, inflorescence development, floral meristem determinacy, abaxial cell fate specification, and nodulation. It is linked to chlorophyll content, herbicide resistance, and plastoquinone and tocopherol synthesis. The protein localises to the nucleus, cytosol, mitochondria and extracellular space. Studies of related genes in other species connect the family to hydroxyphenylpyruvate dioxygenase activity, herbicide binding and response, tocopherol and tocotrienol production, chlorophyll retention, and photosynthesis.