Farnesyl pyrophosphate synthase (FPS) derived from seedlings of sunflower (Helianthus annus)

摘要

The present invention provides nucleotide and peptide sequences of an isolated cDNA coding for sunflower farnesyl pyrophosphate synthase, a key enzyme for the structurally diverse class of isoprenoid biosynthetic metabolites. The present invention also provides the recombinant plant expression vector comprising said nucleotide sequences and for the host cell into which said DNA sequence in the recombinant plant expression vector has been introduced to produce transgenic tobacco plants. Transgenic plants expressing heterologous farnesyl pyrophosphate synthase show 2-fold increase in seed production, higher chlorophyll contents in leaves and stronger drought-stress tolerance, as compared to non-transgenic or control vector-transformed tobacco plants.