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  • 1
    Electronic Resource
    Electronic Resource
    Studies on dissimilatory sulfate-reducing bacteria that decompose fatty acids (1983)
    Springer
    Archives of microbiology 134 (1983), S. 286-294 
    Details
    ISSN: 1432-072X
    Keywords: Filamentous anaerobes ; Gliding motility ; Cell wall structure ; Anaerobic acetate oxidation ; Fatty acids ; Anaerobic benzoate oxidation ; Sulfate reduction ; Desulfoviridin ; Cytochromes ; Genus Desulfonema
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Gliding motility, ultrastructure and nutrition of two newly isolated filamentous sulfate-reducing bacteria, strains 5ac10 and 4be13, were investigated. The filaments were always attached to surfaces. Growth was supported by addition of insoluble aluminium phosphate or agar as substrata for gliding movement. Electron microscopy of ultrathin sections revealed cell walls characteristic of Gramnegative bacteria; the undulated structure of the outer membrane may pertain to the translocation mechanism. Intracytoplasmic membranes were present. Acetate, higher fatty acids, succinate or fumarate served as electron donors and carbon sources. Strain 5ac10 grew also with lactate, but not with benzoate that was used only by strain 4be13. Strain 5ac10 was able to grow slowly on H2 plus CO2 or formate in the presence of sulfate without additional organic carbon source. The capacity of complete oxidation was shown by stoichiometric measurements with acetate plus sulfate. Both strains contained b- and c-type cytochromes. Desulfoviridin was detected only in strain 5ac10. The two filamentous gliding sulfate reducers are described as new species of a new genus, Desulfonema limicola and Desulfonema magnum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00407804
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  • 2
    Electronic Resource
    Electronic Resource
    Sporulation and further nutritional characteristics of Desulfotomaculum acetoxidans (1981)
    Springer
    Archives of microbiology 129 (1981), S. 401-402 
    Details
    ISSN: 1432-072X
    Keywords: Desulfotomaculum acetoxidans ; Intestinal bacterium ; Spore formation ; Gas vacuoles ; Sulfate reduction ; Anaerobic acetate oxidation ; Butyrate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Acetate-oxidizing sulfate-reducing bacteria of the Desulfotomaculum acetoxidans type have been enriched from animal manure, rumen content and dung contaminated freshwater habitats, indicating that they are primarily intestinal bacteria. Sporulation was observed only when acetate was the organic substrate; with butyrate, which allowed faster growth than acetate, spore formation never occurred. The cone-shaped highly refractile areas adjacent to the spores in spore-forming mother cells were shown to be gas vacuoles. Biotin was the only growth factor required by Desulfotomaculum acetoxidans strain 5575 in minimal media with sulfate and acetate or other organic substrates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00406471
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Studies on dissimilatory sulfate-reducing bacteria that decompose fatty acids (1981)
    Springer
    Archives of microbiology 129 (1981), S. 395-400 
    Details
    ISSN: 1432-072X
    Keywords: Anaerobic acetate oxidation ; Saline environments ; Sulfate reduction ; Sulfite ; Thiosulfate ; Growth yields ; Cytochromes ; Species description ; Desulfobacter postgatei
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Three strains (2ac9, 3ac10 and 4ac11) of oval to rodshaped, Gram negative, nonsporing sulfate-reducing bacteria were isolated from brackish water and marine mud samples with acetate as sole electron donor. All three strains grew in simple defined media supplemented with biotin and 4-aminobenzoic acid as growth factors. Acetate was the only electron donor utilized by strain 2ac9, while the other two strains used in addition ethanol and/or lactate. Sulfate served as electron acceptor and was reduced to H2S. Complete oxidation of acetate to CO2 was shown by stoichiometric measurements with strain 2ac9 in batch cultures using sulfate, sulfite or thiosulfate as electron acceptors. With sulfate an average growth yield of 4.8 g cell dry weight was obtained per mol of acetate oxidized; with sulfite or thiosulfate the growth yield on acetate was about twice as high. None of the strains contained desulfoviridin. In strain 2ac9 cytochromes of the b- and c-type were detected. Strain 2ac9 is described as type strain of the new species and genus, Desulfobacter postgatei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00406470
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  • 4
    Electronic Resource
    Electronic Resource
    A new anaerobic, sporing, acetate-oxidizing, sulfate-reducing bacterium, Desulfotomaculum (emend.) acetoxidans (1977)
    Springer
    Archives of microbiology 112 (1977), S. 119-122 
    Details
    ISSN: 1432-072X
    Keywords: Desulfotomaculum acetoxidans ; Emendation of Desulfotomaculum ; Species description ; Anaerobic acetate oxidation ; Sulfate reduction ; Electron donors ; b-type cytochrome ; Sulfite reductase P582
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new strictly anaerobic, polarly flagellated, sporing, acetate-oxidizing, sulfate-reducing bacterium was isolated from anaerobic fresh or sea water mud samples. The oxidation of acetate to CO2 is stoichiometrically linked to the formation of H2S from sulfate. Ethanol, butanol and butyrate are also used. Hydrogen, lactate or pyruvate are not used as electron donors; organic substances are not fermented. A cytochrome of the b-type and a supposed sulfite reductase, P582, were detected spectrophotometrically. An emended description of the genus Desulfotomaculum is proposed which includes the new bacterium as the species Desulfotomaculum acetoxidans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00446665
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