Figure 4. Phylogenetic affiliation of the Marine Methylotrophic Groups 1-3.

Phylogeny of the Marine Methylotrophic Groups 1-3 within the Gammaproteobacteria based on their 16S rRNA genes. The colors indicate the origin of the sequences. Organisms belonging to the depicted groups were only found at cold seeps and not at the reference site. Probes specific for certain groups are marked in blue (see also Table S2 in the Materials and Methods S1).