HPD — Lactuca sativa

Summary

LsHPD (LSAT_V11C600314840) on lettuce chromosome 6 encodes a 4-hydroxyphenylpyruvate dioxygenase, an iron-binding enzyme with a 4OHPhenylPyrv_dOase domain. This gene is associated with the biosynthesis of plastoquinone, tocopherols (vitamin E), carotenoids, and vitamins A and B6, as well as with tyrosine and L-phenylalanine breakdown and seed germination. It has been linked to chlorophyll content and localises to the cytosol, mitochondria, and extracellular space. Studies of related genes in other species connect the family to herbicide response, photosynthesis, vitamin E content, and high light stress tolerance, while sequence similarity links the family to traits including carotenoid and anthocyanin content, plant height, seed weight, and herbicide sensitivity.