Gammaproteobacteria incertae sedissulfur-oxidizing symbiontsCandidatus PseudothioglobusAlkalimonasCandidatus ThioglobusCandidatus NardonellaCandidatus PalibaumanniaCandidatus CompetibacteraceaeHalospinaMethylonatrumCelerinatantimonadaceaeCandidatus ReidiellaCandidatus AzoamicaceaeCandidatus SteffaniaLitorivivens