Fig. 3From: Enhanced metabolic flux of methylerythritol phosphate (MEP) pathway by overexpression of Ginkgo biloba 1-Hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate Reductase 1 (GbHDR1) gene in poplarTranscript levels of downstream terpene biosynthetic genes in poplar plants. A Overall scheme of terpene biosynthetic pathways and related enzymes, B comparison of transcript levels in WT (n = 3) and GbHDR1ox poplars (8 lines, n = 3 to 5). The white and black bar represents the WT and the transgenic plants, respectively. Error bar indicates standard deviation. The asterisk symbol indicates **P < 0.01 and *P < 0.05Back to article page