Fig 5. Phylogenetic relationship between ¹³C labelled OTUs from microcosms incubated with ¹³C (hemi)cellulose.

Sequence data was derived from Illumina MiSeq amplicon sequencing of 16S rRNA genes using primers Bakt_341F and Bakt_785R. The tree was constructed using the neighbor-joining method for clustering and the maximum composite likelihood method for computing evolutionary distances. Numbers at branches, bootstrap values of 500 replicates. Scale bar, 1 nucleotide substitution per 20 nucleotides. Blue, OTUs from groundwater microcosms; brown, OTUs from soil microcosms.