Figure 6

Analysis of MiSeq data by R. (a) Relative abundance (% of total reads) of bacterial 16S rRNA gene at phylum level. (b) NMDS analysis of OTUs. (c) and (d) 79 OTUs that were changed in abundance by Cr exposure according to redundancy analysis. Heatmap of the abundance of 46 OTUs enriched and 33 OTUs reduced by Cr(VI). The taxonomy of the OTUs (genus, family, and phylum) is depicted on the right. *OTUs in which abundance was changed by Cr(VI) and then reversed by TW1-1.