Acetobacterium tundrae sp. nov., a new psychrophilic acetogenic bacterium from tundra soil

@article{Simankova2000AcetobacteriumTS,
  title={Acetobacterium tundrae sp. nov., a new psychrophilic acetogenic bacterium from tundra soil},
  author={Maria V Simankova and Oleg Rollandovich Kotsyurbenko and Erko Stackebrandt and Nadezhda A. Kostrikina and A. Lysenko and G. A. Osipov and Alla N. Nozhevnikova},
  journal={Archives of Microbiology},
  year={2000},
  volume={174},
  pages={440-447}
}
Abstract. A new psychrophilic, anaerobic, acetogenic bacterium from the tundra wetland soil of Polar Ural is described. The organism fermented H2/CO2, formate, methanol, and several sugars to acetate as the sole end-product. The temperature range for growth was 1–30 °C with an optimum at 20 °C. The bacterium showed no growth at 32 °C. Cells were gram-positive, oval-shaped, flagellated rods 0.7–1.1×1.1–4.0 µm in size when grown at 1–20 °C. At 25–30 °C, the cell size increased up to 2–3×10–15 µm… 

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References

SHOWING 1-10 OF 28 REFERENCES

Acetobacterium, a New Genus of Hydrogen-Oxidizing, Carbon Dioxide-Reducing, Anaerobic Bacteria

TLDR
A new genus of fastidiously anaerobic bacteria which produce a homoacetic fermentation is described, which is tentatively placed in the family Propionibacteriaceae.

Phylogenetic relationships of the genera Acetobacterium and Eubacterium sensu stricto and reclassification of Eubacterium alactolyticum as Pseudoramibacter alactolyticus gen. nov., comb. nov.

TLDR
The data indicate that Clostridium cluster XV consists of at least the following three genera: the genus Acetobacterium, the genus Eubacterium sensu stricto (comprising E. limosum, E. barkeri, and E. callanderi), and the genus Pseudoramibacter gen. nov., which is created for E. alactolyticum.

Hydrogen turnover by psychrotrophic homoacetogenic and mesophilic methanogenic bacteria in anoxic paddy soil and lake sediment

TLDR
Cultures with H2 as energy source resulted in the enrichment of chemolithotrophic homoacetogenic bacteria whenever incubation temperatures were lower than 20°C, and Hydrogenotrophic methanogens could only be enriched at 30°C from anoxic paddy soil.

Influence of pH on Terminal Carbon Metabolism in Anoxic Sediments from a Mildly Acidic Lake

TLDR
Analysis of both carbon transformation parameters with C-labeled tracers and bacterial trophic group enumerations indicated that methanogenesis from acetate and both heterolactic- and acetic acid-producing fermentations were important to the anaerobic digestion process.

FORMATION OF METHANE BY BACTERIAL EXTRACTS.

Thermally caused filament formation in the psychrophile Bacillus insolitus.

TLDR
The synthesis of DNA corresponded to the amount of growth which occurred at 30C as well as at 20C, indicating that the cell elongation was not caused by the prevention of DNA synthesis at the higher temperature.

Methanogenesis in sediments from deep lakes at different temperatures (2–70°C)

TLDR
The communities enriched at 4–8°C had the highest activity at low temperatures indicating that a specific psychrophilic community exists, and methane production from organic matter of sediments occurred at all temperatures tested.

The genus Nocardiopsis represents a phylogenetically coherent taxon and a distinct actinomycete lineage: proposal of Nocardiopsaceae fam. nov.

TLDR
The phylogenetic position and the morpho- and chemotaxonomic properties of Nocardiopsis species support the creation of a family for the genus NOCardiopsis, Nocardopsaceae fam.