Fig. 4

Differentially expressed genes (DEGs) involved in the “terpenoid backbone biosynthesis” pathway of ginger. The red columns indicate genes expressed at a significantly high level in fibrous roots. The green columns indicate genes expressed at a significantly high level in rhizomes. The red boxes indicate the biosynthesis of the major compounds found in ginger volatile oil. This color-coded map of DEGs corresponds to map00900 in the KEGG database (http://www.genome.jp/dbget-bin/www_bget?pathway:map00900)