Figure 5.
Phylogenetic relationships of dsrB sequences from borehole 1025C and U1301A fluids. Gene clones identified in this study are highlighted in bold; the relative abundance of identical clones recovered from the same sample is indicated by circle size. Tree branches are colored according to the lineage names that are listed. The blue-red color temperature gradient represents the optimum growth temperature of cultivated strains, or in the case of cloned sequences, the average temperature of the sampled environment. Reverse dissimilatory sulfite reductase genes were used as an outgroup.
