Desulfomonile tiedjei
Classification
Domain (Bacteria); Phylum (Proteobacteria); Class (Deltaproteobacteria); Order (Syntrophobacterales); family (Syntrophaceae); Genus (Desulfomonile) [Others may be used. Use NCBI link to find]
Species
NCBI: Taxonomy |
Genus species Desulfomonile tiedjei
Description and Significance
Describe the appearance, habitat, etc. of the organism, and why you think it is important.
Genome Structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence?
Cell Structure, Metabolism and Life Cycle
Interesting features of cell structure; how it gains energy; what important molecules it produces.
Ecology and Pathogenesis
Desulfomonile tiedjei was isolated from municipal digester sludge from Adrian, Michigan. (1) Digester sludge refers to the semisolid waste from the treatment of municipal sewage. The chemical composition of sewer sludge varies, but the sludge can be quite rich in organic matter, with the dry mass of organic compounds reaching up to 50% in some urban treatment systems. Nitrogen, phosphorous, potassium, sulfur, and other essential elements are present in smaller amounts as well. (2) Another important aspect of the environment that D. tiedjei was isolated from is that the municipal digester sludge is an anoxic environment.
D. tiedjei is involved in syntrophic relationships with other microbes isolated from the digestor sludge it was obtained from. A benzoate-oxidizing bacterium (strain BZ-2) oxidizes the benzoate produced from the dehalogenation 3-cholorobenzoic acid by D. tiedjei to produce acetate, elemental hydrogen, and carbon dioxide. In turn, two methanogenic bacteria isolated from the sludge, Methanobacterium sp. Strain PM-2 and Methanospirillum hungatei PM-1 utilize acetate. The former metabolizes the acetate into methane and carbon dioxide; the latter metabolizes the acetate into methane, carbon dioxide, and elemental hydrogen. D. tiedjei then utilizes the hydrogen produced as an electron donor for further dehalogenation reactions. (1,3)
The microbe is not known to be pathogenic.
References
(1) Shelton, D., Tiedje, J. “Isolation and Partial Characterization of Bacteria in an Anaerobic Consortium that Mineralizes 3-Chlorobenzoic Acid” Applied and Environmental Microbiology. 1984. Volume 48, No. 4 p. 840-848.
(2) European Commission. Disposal and recycling routes for Sewage Sludge Part Three. Luxembourg: Office for Official Publications of the European Communities, 2001
Author
Page authored by _____, student of Prof. Jay Lennon at Michigan State University.
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