Huber, Harald and Burggraf, S. and Mayer, T. and Wyschkony, I. and Rachel, Reinhard and Stetter, Karl Otto (2000) 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. International journal of systematic and evolutionary microbiology 50 (6), pp. 2093-2100.
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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 molecular hydrogen as the electron donor. 165 rDNA-based sequence comparisons revealed that the organisms are members of the crenarchaeal branch of the Archaea. They represent a new, deeply branching lineage within the family of the Desulfurococcaceae. In DNA-DNA hybridization experiments both strains exhibited low levels of hybridization to each other and to further representatives of this family. Therefore, they represent a new genus, for which the name Ignicoccus gen. nov. is proposed. At present it consists of two new species, Ignicoccus islandicus sp. nov. (type strain is Kol8T = DSM 13165T = ATCC 700957T) and Ignicoccus pacificus sp. nov. (type strain is LPC33T = DSM 13166T = ATCC 700958T).
|Institutions:||Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Mikrobiologie > Prof. Dr. Michael Thomm|
|Subjects:||500 Science > 570 Life sciences|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||15 Mar 2010 08:23|
|Last Modified:||15 Mar 2010 08:23|
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