Iron microbial cycling

Nealson KH, CR Myers (1992) Microbial reduction of manganese and iron new approaches to carbon cycling. Appl Environ Microbiol 58 439-443. 

Microbiologically influenced corrosion is defined by the National Association of Corrosion Engineers as any form of corrosion that is influenced by the presence and/or activities of microorganisms. Although MIC appears to many humans to be a new phenomenon, it is not new to the microbes themselves. Microbial transformation of metals in their elemental and various mineral forms has been an essential part of material cycling on earth for billions of years. Some forms of metals such as reduced iron and manganese serve as energy sources for microbes, while oxidized forms of some metals can substitute for... 

Fig. 6.5 Microbial iron and sulfur cycles that may have dominated biogeochemical cycling before the origin of oxygenic photosynthesis, aerobic respiration and possibly before the use of oxides of nitrogen.

Nealson KH (1983) The microbial iron cycle. In Microbial geochemistry. Kmmbein W (ed) Blackwell Sci, Boston, p 159-190... 

Nealson KH, Saffarini D (1994) Iron and manganese in anaerobic respiration environmental significance, phylogeny, and regulation. Ann Rev Microbio 48 311-343 Nealson KH, Stahl DA (1997) Microorganisms and biogeochemical cycles what can we learn from layered microbial communities Rev Mineral 35 5-34... 

Barbeau K, Rue EL, Bruland KW, Butler A (2001) Photochemical Cycling of Iron in the Surface Ocean Mediated by Microbial Iron(III)-Binding Ligands. Nature 413 409... 

Auclair, J. C. 1995. Implications of increased UV-B induced photoreduction Iron(II) enrichment stimulated picocyanobacterial growth and the microbial food web in clear-water acidic Canadian Shield lakes. Canadian Journal of Fisheries and Aquatic Sciences 52 1782—1788. Auclair, J. C., P. Brassard, and P. Couture. 1985. Total dissolved phosphorus Effects of two molecular weight fractions on phosphorus cycling in natural phytoplankton communities. Water Research 19 1447—1453. 

Sulfur isotopes can effectively be used to examine important geochemical processes associated with redox changes in sedimentary environments. The speciation of sulfur is strongly affected by redox potential, pH, productivity, microbial sulfate reduction, and iron availability (Berner, 1984). More details are provided on the sulfur cycle in chapter 12. In general, during microbial dissimilatory sulfate reduction there is fractionation of sulfur... 

The focus of this review has been on the history and state-of-the-art of N-cycle models. One can legitimately ask how relevant these models are given recent advances in our understanding of the factors that control primary production and particulate matter export in the ocean. Fifteen to twenty years ago, when the Fasham et al. (1990) model was stiU under development, the potential importance of iron limitation was only beginning to be appreciated. The emphasis at that time was on N limitation, the intricacies of the food web and the potential importance of bacteria and the microbial loop. We now know that iron limits phytoplankton growth over... 

Barbeau K., Rue E. L., Bruland K. W., and Butler A. (2001) Photochemical cycling of iron in the surface ocean mediated by microbial iron(III)-binding ligands. Nature 413, 409-413. 

Iron and manganese oxides are the most abundant components of Earth s surface that can serve as anaerobic terminal electron acceptors in microbial metabolism, yet it was recognized only recently that microorganisms play a key role their cycling. Despite early reports that suggested biological Fe(III) reduction was important in wet... 

Roden E. E., Sobolev D., Glazer B., and Luther G. W. (in press) New insights into the biogeochemical cycling of iron in circumneutral sedimentary environments potential for a rapid microscale bacterial Fe redox cycle at the aerobic-anaerobic interface. In Iron in the Natural Environment Biogeochemistry, Microbial Diversity, and Bioremediation (eds. J. D. Coates and C. Zhang). Kluwer, (in press). 

Weiss J. V. (2002) Microbially-mediated iron cycling in the rhizosphere of wetland plants. PhD Dissertation, George Mason University. 

Fowle DA, Drachel GK, Thomsen-Ebert T, Welch SA, Banfield JF (in prep.) Microbial controls on trace metal cycling Linkages with the iron cycle. In The Biogeochemistry of Iron Cychng in Natural Environments. J Coates, C Zhang (eds)... 

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