- International Journal of Systematic and Evolutionary Microbiology
- Volume 36, Issue 4
f Acidianus infernus gen. nov., sp. nov., and Acidianus brierleyi Comb. nov.: Facultatively Aerobic, Extremely Acidophilic Thermophilic Sulfur-Metabolizing Archaebacteria
- Authors: Andreas Segerer, Annemarie Neuner, Jakob K. Kristjansson, Karl O. Stetter*
- *Corresponding author.
- Int J Syst Evol Microbiol, October 1986 36: 559-564, doi: 10.1099/00207713-36-4-559
- Subject: Original Papers Relating To Systematic Bacteriology
- Published Online:
A new genus, Acidianus, is characterized from studies of 26 isolates of thermoacidophilic archaebacteria from different solfatara fields and marine hydrothermal systems; these isolates grow as facultative aerobes by lithotrophic oxidation and reduction of SO, respectively, and are therefore different from the strictly aerobic Sulfolobus species. The Acidianus isolates have a deoxyribonucleic acid guanine-plus-cytosine content of 31 mol%. In contrast, two of three Sulfolobus species, including the type species, have a guanine-plus-cytosine content of 37 mol%; Sulfolobus brierleyi is the exception, with a guanine-plus-cytosine content of 31 mol%. In contrast to its earlier descriptions, S. brierleyi is able to grow strictly anaerobically by hydrogen-sulfur autotrophy. Therefore, it is described here as a member of the genus Acidianus. The following species are assigned to the genus Acidianus: Acidianus infernus sp. nov. (type strain, strain DSM 3191) and Acidianus brierleyi comb. nov. (type strain, strain DSM 1651).
Copyright © 1986 International Union of Microbiological Societies | Published by the Microbiology Society
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