Figure 2.

Phylogenetic tree based on 16S rRNA sequences showing the phylogenetic position of “Thioalkalivibrio sulfidophilus” HL-EbGr7. The sequence was aligned to sequences stored in the SILVA database using the SINA Webaligner [23]. Subsequently, the aligned sequences were imported into ARB [24], and a neighbor joining tree was constructed. Sequences of members from the Alphaproteobacteria were used as an outgroup, but were pruned from the tree. The scale bar indicates 1% sequence difference.