FIG.4.

Comparative sequence analysis of 16S rRNA gene sequences obtained from the bands of the SSCP fingerprints from the samples of the Harzwasser drinking water supply system. They are labeled with HWW (Harzwasserwerke) plus the phylotype number given in Tables 2 and 3. Sequences are coded with different character types according to their origin in terms of nucleic acid type: i.e., DNA-based sequences are shown in bold, RNA-based sequences are shown in bold italic, and sequences occurring in DNA- and RNA-based fingerprints are shown in bold with an asterisk. (a) Phylogenetic tree of the phylum Acidobacteria. (b) Phylogenetic tree of the phylum Actinobacteria. (c) Phylogenetic tree of the phylum Bacteroidetes. (D) Phylogenetic tree of the class Betaproteobacteria.