FIGURE 1 | Reconstructed phylogenetic tree of the domain Bacteria based on 16S rRNA gene sequences.

From the following article:

Tapping into microbial diversity

Martin Keller & Karsten Zengler

Nature Reviews Microbiology 2, 141-150 (February 2004)

doi:10.1038/nrmicro819

Tapping into microbial diversity

Bacterial phyla with cultivated representatives are shown in blue and green. Numbers in red represent the published species within a phylum (see Bacterial nomenclature in the Online links). Shown in blue are phyla with representatives that produce anti-infective molecules (as classed in Ref. 161). The scale bar corresponds to 0.05 changes per nucleotide position. Modified with permission from Ref. 28 © (2003) Annual Reviews.

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