FIG. 3.

Neighbor-joining analysis of 16S rRNA gene sequences of type I methanotrophic clones from profundal and littoral sediments of Lake Constance. The clones are prefixed with “Littoral site” and “Profundal site,” and other sequences from cultured methanotrophs and clones are also shown. Around 800 nucleotides were considered for the tree construction. The RFLP groups are indicated as Littoral A to D and Profundal A to H, and the clone frequencies are given in parentheses. The National Center for Biotechnology Information accession numbers of clones and strains from other studies are given near each name. The bar represents 10% divergence.