Fig. 3 | Nature Communications

Fig. 3

From: Anoxygenic photosynthesis and the delayed oxygenation of Earth’s atmosphere

Fig. 3

Comparative molecular phylogeny of 16S rRNA and major genes regulating P metabolism. Approximately Maximum-Likelihood Trees (FastTree) of concatenated 16S rRNA gene (a), PstABC (b), and PhoU (c). Nodes are annotated with Neighbor Joining (1000x bootstrapped) and FastTree support values. These phylogenies are equivalent to previously established and accepted phylogenies for the Chlorobiales based on the 16S and FMO genes. Maximum likelihood and maximum parsimony yielded trees with similar topology (trees not shown). Clade nomenclature follows recommended taxonomy: Group 1 = Prostheochloris, Group 2 = Chlorobium 2, Group 3 = Chlorobium 3, Group 4 = Chlorobaculum. The outgroup is Rhodothermus marinus DSM 4252. Circles at the branch tips represent photoferrotrophic organisms and the () denotes Chlorobium phaeoferrooxidans strain KB01. Note that C. thalassium lacks a PhoU gene

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