Figure 8: Comparison of transcriptional expressions of genes responsible for naphthalene degradation under four different environmental conditions.

cDNA reads were mapped onto the coding sequences of putative naphthalene-degrading gene clusters; expression levels are indicated as RPKM values in a non-cumulative way. The black arrows indicate putative genes involved in naphthalene metabolism (nagC* is a partial gene of nagC). R1 and R2 are genes encoding GntR- and LysR-type regulatory proteins, respectively. Bars showing RPKM values in the four environmental test conditions are placed above the corresponding sequences.