Fig. 3
Hierarchical cluster analysis of genome expression of Z. mobilis strain ZM4 in response to selective phenolic aldehydes. Gene expression levels were clustered based on log2 transformation. Color code red, green, or black each represents up-, down-, or normally regulated expression, respectively. Letter H, G, and S, each stands for, phenolic group H represented by 4-hydroxybenzaldehyde, phenolic group G represented by vanillin, and phenolic group S represented by syringaldehyde, respectively. CK stands for a non-phenolic aldehyde-treated control. Replications of each treatment for the microarray experiment were marked in Roman numeral