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. 2022 Jan 13;11(1):e1258. doi: 10.1002/mbo3.1258

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© 2021 The Authors. MicrobiologyOpen published by John Wiley & Sons Ltd.

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Phylogenetic trees for C2 and NirS domains. Phylogenetic analysis of C2 domain homologs (above) places the Chloroflexi within a diverse clade including Epsilonproteobacteria, Aquificae, Bacteroidetes, and Planctomycetes; this clade is sister to a broad radiation of Alpha‐, Beta‐, and Gammaproteobacteria. Analysis of NirS domain homologs (below) places the Chloroflexi within the clade dominated by Alpha‐, Beta‐, and Gammaproteobacteria, which also contains members of the Bacteroidetes and Aquificales. The overall taxonomic representation for the domains is similar. Support values for selected bipartitions are labeled (aLRT/bb). Support for other nodes is indicated with the following color scheme: Strong support with both values ≥90 (black); weak support with both values ≤50 (white); intermediate support with one or both values between 50 and 90 (gray); conflicting support, with one value ≤50 and the other ≥90 (gray)