Nitrosomonadales
Other autotrophic genera such as "Thiobacillus" and "Annwoodia" oxidize reduced inorganic sulfur ions such as thiosulfate and sulfide into sulfate and have key roles in the sulfur cycle . 
<triplet> sulfate <subj> sulfur <obj> has part <triplet> sulfur cycle <subj> sulfur <obj> facet of