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Ignicoccus gen. nov., a novel genus of hyperthermophilic, chemolithoautotrophic Archaea, represented by two new species, Ignicoccus islandicus sp nov and Ignicoccus pacificus sp nov. and Ignicoccus pacificus sp. nov.

Huber, Harald ; Burggraf, S. ; Mayer, T. ; Wyschkony, I. ; Rachel, Reinhard ; Stetter, Karl Otto


Two species of novel, chemolithoautotrophic, sulfidogenic micro-organisms were isolated from submarine hydrothermal systems in the Atlantic (at the Kolbeinsey Ridge north of Iceland) and in the Pacific (at 9 degrees N, 104 degrees W). The coccoid cells grew within a temperature range of 70-98 degrees C (optimum around 90 degrees C). They gained energy by reduction of elemental sulfur using ...


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