Fig. 2

Phylogenetic tree showing the relationships of Sulfurifustis variabilis skN76^T and Sulfuricaulis limicola HA5^T with other members of the class Gammaproteobacteria based on 16S rRNA gene sequences aligned by using CLUSTAL W. Desulfatitalea tepidiphila S28bF^T was used as an outgroup. This tree was reconstructed using 1412 sites with the neighbor-joining method by using MEGA6 [27]. Percentage values of 1000 bootstrap resamplings are shown at nodes; values below 50 % were not shown