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

  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},
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… 

Characterization of the psychrotolerant acetogen strain SyrA5 and the emended description of the species Acetobacterium carbinolicum

A psychrotolerant, obligate anaerobic, acetogenic bacterium designated strain SyrA5 was isolated from black anoxic sediment of a brackish fjord and proposed as a subspecies of A. carbinolicum for which the name Acetobacteriumcarbinolium subspecies kysingense is proposed.

Novel psychrophilic anaerobic spore-forming bacterium from the overcooled water brine in permafrost: description Clostridium algoriphilum sp. nov.

It was suggested to describe this strain as a new species named Clostridium algoriphilum as it differs from the other species of the genus by the substrates necessary for the growth, products forming as a result of the fermentation and content of the fatty acids in the cell wall.

The defining genomic and predicted metabolic features of the Acetobacterium genus

The findings suggest that outside of the reductive acetyl-CoA (Wood-Ljungdahl) pathway, the Acetobacterium genus is more phylogenetically and metabolically diverse than expected, with metabolism of fructose, lactate, and H2:CO2 constant across the genus, and ethanol, methanol, caffeates, and 2,3-butanediol varying across the species.

Anaerobic psychrophiles from Lake Zub and Lake Untersee, Antarctica

The study of samples from Antarctica 2008 and 2009 expeditions organized and successfully conducted by Richard Hoover led to the isolation of diverse anaerobic strains with psychrotolerant and

Insights into the genome structure of four acetogenic bacteria with specific reference to the Wood–Ljungdahl pathway

New genome sequences for four species are reported for the first time, and the analysis of protein networks highlighted the expansion of protein orthologues in A. woodii compared to A. bacchi, whereas protein networks involved in the WL pathway were more conserved.

Cold-active acetogenic bacteria from surficial sediments of perennially ice-covered Lake Fryxell, Antarctica.

Cold-active acetogenic bacteria in the permanently cold sediments of Lake Fryxell, Antarctica were investigated using culture-based methods and found to be physiologically and phylogenetically related to Acetobacterium bakii and AcetOBacterium tundrae.

Energetics and Application of Heterotrophy in Acetogenic Bacteria

The energetic advantages of coupling CO2 reduction to fermentations that exploit otherwise-inaccessible substrates and the ecological advantages, as well as the biotechnological applications of the heterotrophic metabolism of acetogens are discussed.

Defining Genomic and Predicted Metabolic Features of the Acetobacterium Genus

A comparative genome analysis of 11 different Acetobacterium genomes found clade-specific metabolic potential was observed, such as amino acid transport and metabolism in the psychrophilic species, and biofilm formation in the A. wieringae clade, which may afford these groups an advantage in low-temperature growth or attachment to solid surfaces, respectively.

Psychrophilic and Psychrotolerant Microbial Extremophiles in Polar Environments

The psychrophilic lithoautotrophic homoacetogen isolated from the deep anoxic trough of Lake Untersee is an ideal candidate for life that might inhabit comets or the polar caps of Mars.

Competition between homoacetogenic bacteria and methanogenic archaea for hydrogen at low temperature

The competitiveness of these microorganisms was studied by measuring H2 consumption kinetics (Vmax, Km, threshold) in different psychroactive strains as function of temperature to reveal a generally strong competitiveness for H2 at high H2 concentrations.



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

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.

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

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

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.


Thermally caused filament formation in the psychrophile Bacillus insolitus.

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)

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.

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