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Isolation of an autotrophic ammonia-oxidizing marine archaeon
The isolation of a marine crenarchaeote that grows chemolithoautotrophically by aerobically oxidizing ammonia to nitrite—the first observation of nitrification in the Archaea is reported, suggesting that nitrifying marine Cren archaeota may be important to global carbon and nitrogen cycles. Expand
Nitrosopumilus maritimus genome reveals unique mechanisms for nitrification and autotrophy in globally distributed marine crenarchaea
The isolation of Candidatus “Nitrosopumilus maritimus” strain SCM1 is reported, revealing highly copper-dependent systems for ammonia oxidation and electron transport that are distinctly different from known ammonia-oxidizing bacteria. Expand
Nitrososphaera viennensis, an ammonia oxidizing archaeon from soil
The cultivation and isolation of an AOA from soil is described, showing it grows on ammonia or urea as an energy source and is capable of using higher ammonia concentrations than the marine isolate, Nitrosopumilus maritimus. Expand
Cultivation of a thermophilic ammonia oxidizing archaeon synthesizing crenarchaeol.
The cultivation of a thermophilic nitrifier ('Candidatus Nitrosocaldus yellowstonii'), an autotrophic crenarchaeote growing up to 74 degrees C by aerobic ammonia oxidation, providing the first direct evidence for its synthesis by a thermophile. Expand
Production of oceanic nitrous oxide by ammonia-oxidizing archaea
It is hypothesized that the production of N2O in tropical ocean areas results mainly from archaeal nitrification and will be affected by the predicted decrease in dissolved oxygen in the ocean. Expand
Ammonia-oxidizing archaea use the most energy-efficient aerobic pathway for CO2 fixation
Significance CO2 fixation is the most important biosynthesis process on Earth, enabling autotrophic organisms to synthesize their entire biomass from inorganic carbon at the expense of energyExpand
Intact Membrane Lipids of “Candidatus Nitrosopumilus maritimus,” a Cultivated Representative of the Cosmopolitan Mesophilic Group I Crenarchaeota
Analysis of the membrane lipid composition of “Candidatus Nitrosopumilus maritimus” confirms unambiguously that crenarchaeol is synthesized by species belonging to the group I, and reveals that the GDGTs have hexose, dihexose, and/or phosphohexose head groups. Expand
Influence of temperature, pH, and salinity on membrane lipid composition and TEX 86 of marine planktonic thaumarchaeal isolates
Abstract Marine ammonia-oxidizing archaea of the phylum Thaumarchaeota are a cosmopolitan group of microorganisms representing a major fraction of the picoplankton in the ocean. The cytoplasmicExpand
Reclassification of Desulfobacterium phenolicum as Desulfobacula phenolica comb. nov. and description of strain SaxT as Desulfotignum balticum gen. nov., sp. nov.
A mesophilic, sulfate-reducing bacterium isolated from marine coastal sediment in the Baltic Sea and originally described as a 'Desulfoarculus' sp. Expand
Influence of ammonia oxidation rate on thaumarchaeal lipid composition and the TEX86 temperature proxy
The findings suggest that the TEX86 signal exported from the water column is influenced by the dynamics of ammonia oxidation, and potentially represents a composite of regional correlations based on nutrient dynamics and global correlated based on archaeal community composition and temperature. Expand