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Geothrix fermentans
''Geothrix fermentans'' is a rod-shaped, anaerobic bacterium. It is about 0.1 µm in diameter and ranges from 2-3 µm in length. Cell arrangement occurs singly and in chains. ''Geothrix fermentans'' can normally be found in aquatic sediments such as in aquifers. As an anaerobic chemoorganotroph, this organism is best known for its ability to use electron acceptors Fe(III), as well as other high potential metals. It also uses a wide range of substrates as electron donors. Research on metal reduction by G. fermentans has contributed to understanding more about the geochemical cycling of metals in the environment.
==Taxonomy history==
''Geothrix fermentans'' was isolated from metal-contaminated waters of an aquifer in 1999 by John D. Coates from Southern Illinois University and by others from the University of Massachusetts. The novel strain was originally named "Strain H-5T ".〔 After classifying metabolism and confirming the presence and number of c-type cytochromes, Coates et al. proposed that the novel organism belongs to the newly recognized (1991) ''Halophoga''-''Acidobacterium'' phylum. Coates et al. also proposed a new name for the organism: "''Geothrix''"- Greek for hair-like cell that comes from the Earth and "''fermentans''"- Latin for "fermenting."〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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