Phylogenetic tree generated from 1488 nucleotide positions of the 16S rRNA gene using the Kimura 2-parameter distance algorithm in a heuristic search. Only isolated strains were included in the analysis. GenBank accession numbers for bacterial species used in the analysis are shown in parentheses. All organisms are members of the Deltaproteobacteria except the outgroup organism, Desulfotomaculum arcticum, an endospore-forming sulfate-reducing bacterium belonging to the Firmicutes (Vandieken et al. 2006a). Tree topology was maintained using Jukes-Cantor correction, and bootstrap values from 1000 replicates are shown at the branching points
Distance analysis placed the strains within the
Deltaproteobacteria, specifically, within a clade containing
species of Desulfovibrio (Fig. 3).
zosterae (93.8%), an organism isolated from within the roots of a
benthic marine seagrass (Fig. 3) (Nielsen et al.
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