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Chlorobium tepidum Bacteria are Gram-negative, thermophilic, obligatory autotrophic, green sulfur prokaryotes that grow in dense mats over hot springs (e.g., in Yellowstone National Park) and other sulfide-rich waters, mud, and sediments. C. tepidum utilizes anoxygenic photosynthesis and produces elemental sulfur as a waste product. In addition, it can photooxidize hydrogen as well as other sulfur compounds like sulfides and thiosulfate. C. tepidum has light-harvesting complexes called... more »Chlorobium tepidum Bacteria are Gram-negative, thermophilic, obligatory autotrophic, green sulfur prokaryotes that grow in dense mats over hot springs (e.g., in Yellowstone National Park) and other sulfide-rich waters, mud, and sediments. C. tepidum utilizes anoxygenic photosynthesis and produces elemental sulfur as a waste product. In addition, it can photooxidize hydrogen as well as other sulfur compounds like sulfides and thiosulfate. C. tepidum has light-harvesting complexes called chlorosomes that contain bacteriochlorophylls and carotenoids. C. tepidum can also fix atmospheric nitrogen. C. tepidum utilization of nitrogen and sulfur compounds is important in the global cycles of both nutrients. SEM X2600 « less
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