This invention relates to an isolated nucleic acid fragment encoding a
geranylgeranyl pyrophosphate synthase. The invention also relates to the
construction of a chimeric gene encoding all or a portion of the
geranylgeranyl pyrophosphate synthase, in sense or antisense orientation,
wherein expression of the chimeric gene results in production of altered
levels of the geranylgeranyl pyrophosphate synthase in a transformed host
cell.