Microbial iron oxidation/reduction, coupling

Lovley DR, Beadecker M, Lonergan D, et al. 1989. Oxidation of aromatic contaminants coupled to microbial iron reduction. Nature 339 297-9. 

Lovley DR, EJP Phillips (1988) Novel mode of microbial energy metabolism organic carbon oxidation coupled to dissimilatory reduction of iron or manganese. Appl Environ Microbiol 54 1472-1480. 

Organic Carbon Oxidation Microbially Coupled to Reduction of Fe(III)(hydr)oxide. More and more evidence is accumulating that bacteria can grow anaerobically by coupling organic carbon oxidation to the dissimilatory reduction of iron(III) oxides (Nealson, 1982 Arnold et al., 1986 Lovely and Philips, 1988 Nealson and Myers, 1990). 

Lovley, D. R and E. J. P. Phillips (1988), "Novel Mode of Microbial Energy Metabolism Organic Carbon Oxidation Coupled to Dissimilatory Reduction of Iron or Manganese", Applied and Environ. Microbiology 54/6, 1472-1480. 

Lovley DR, Phillips EJP (1988) Novel mode of microbial energy metabolism organic carbon oxidation coupled to dissimilatory reduction of iron or manganese. App Environ Microbio 54 1472-1480 Lovley DR, Stolz JF, Nord Jr GL, Phillips EJP (1987) Anaerobic production of magnetite by a dissimilatoiy iron-reducing microorganism. Nature 330 252-254... 

A few examples of chemoautolithotrophic processes have been mentioned in this chapter, namely anaerobic methane oxidation coupled to sulfate reduction and the ones listed in Table 12.2 involving manganese, iron, and nitrogen. Another example are the microbial metabolisms that rely on sulfide oxidation. Since sulfide oxidation is a source of electrons, it is a likely source of energy that could be driving denitrification, and manganese and iron reduction where organic matter is scarce. 

Figure 17 Substrates and processes coupled to Fe reduction-oxidation. Circled numbers refer to recent reviews of the role of microbial processes in various iron transformations. (1) Lovley and Anderson (2000), Thamdrup (2000), Johnson (1998), Blake and Johnson (2000), Kiisel et al. (1999), and Peine et al. (2000). (2) Thamdrup et al, (1993), Lovely and Phillips (1994a, Schipper and J0rgensen (2002), Blake and Johnson (2000), Pronk and Johnson (1992). (3) Emerson (2000), Johnson (1998), Blake and Johnson (2000), Edwards et al. (2000b), and Roden et al. (in press). (4) Straub et al. (2001). (after Tebo and He, 1999 Roden et al., in press).

The (microbial) dissimilatoiy iron reduction was shown in the previous section. In this section the reactions with major oxidants and reductants will be introduced. Additionally, the interactions between iron and phosphorus, as well as the formation of siderite and iron-bearing sheet silicates will be pointed out briefly to show to the variety of reactions in marine sediments coupled the reactivity of iron. 

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