The Global Iron Cycle

Kendall, Brian; Anbar, Ariel D.; Kappler, Andreas; Konhauser, Kurt O.

doi:10.1002/9781118280874.ch6

Cited by 64 publications

(28 citation statements)

References 279 publications

(309 reference statements)

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“…Declining Fe concentrations may also have stimulated the evolutionary development of organic ligand complexes, such as siderophores, that target elements such as Fe for facilitated acquisition (Hider, 1984;Neilands, 1989;Kendall et al, 2012).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Trace elements at the intersection of marine biological and geochemical evolution

Robbins

Lalonde

Planavsky

et al. 2016

Earth-Science Reviews

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169

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Life requires a wide variety of bioessential trace elements to act as structural components and reactive centers in metalloenzymes. These requirements differ between organisms and have evolved over geological time, likely guided in some part by environmental conditions. Until recently, most of what was understood regarding trace element concentrations in the Precambrian oceans was inferred by extrapolation, geochemical modeling, and/or genomic studies. However, in the past decade, the increasing availability of trace element and isotopic data for sedimentary rocks of all ages have yielded new, and potentially more direct, insights into secular changes in seawater composition -and ultimately the evolution of the marine biosphere. Compiled records of many bioessential trace elements (including Ni, Mo, P, Zn, Co, Cr, Se, and I) provide new insight into how trace element abundance in Earth's ancient oceans may have been linked to biological evolution. Several of these trace elements display redox-sensitive behavior, while others are redox-sensitive but not bioessential (e.g., Cr, U). Their temporal trends in sedimentary archives provide useful constraints on changes in atmosphere-ocean redox conditions that are linked to biological evolution, for example, the activity of oxygen-producing, photosynthetic cyanobacteria. In this review, we summarize available Precambrian trace element proxy data, and discuss how temporal trends in the seawater concentrations of specific trace elements may be linked to the evolution of both simple and complex life. We also examine several biologically relevant and/or redox-sensitive trace elements that have yet to be fully examined in the A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT3 sedimentary rock record (e.g., Cu, Cd, W) and suggest several directions for future studies.

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Trace elements at the intersection of marine biological and geochemical evolution

Robbins

Lalonde

Planavsky

et al. 2016

Earth-Science Reviews

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169

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“…It allows to better understand the evolution of redox conditions throughout Earth's history (Kendall et al, 2012;Posth et al, 2014), the coupling of biogeochemical cycles including the preservation of organic matter (Lalonde et al, 2012;Raiswell and Canfield, 2012), and the fate of contaminants in soils and sediments (Benzerara et al, 2011;Borch et al, 2010;Vaughan and Lloyd, 2011).…”

Section: Introductionmentioning

confidence: 99%

Secondary Mineral Formation During Ferrihydrite Reduction byShewanella oneidensisMR-1 Depends on Incubation Vessel Orientation and Resulting Gradients of Cells, Fe²⁺and Fe Minerals

Dippon

Schmidt

Behrens

et al. 2015

Geomicrobiology Journal

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In previous studies on microbial ferric iron (Fe(III)) reduction varying results regarding reduction rates and secondary mineral formation have been reported for almost identical conditions regarding temperature, pH, medium composition, Fe(III) mineral identity and bulk iron concentration. Here we show that in addition to physico-chemical parameters also geometric aspects, i.e. incubation orientation and dimension of cultivation vessels, influence the reduction rates and mineralogy. We incubated the Fe(III)-reducer Shewanella oneidensis MR-1 in test tubes at ferrihydrite (FH) concentrations of 1.3-50 mM either in vertical or horizontal orientation. Cells and minerals formed a pellet at the bottom of the tubes with different thicknesses at the same initial FH concentration depending on the incubation orientation. In vertically incubated tubes thick FH pellets were present at the bottom of the tubes and magnetite was formed in all setups with ≥2.5 mM initial FH. In tubes that were incubated horizontally no magnetite was formed in presence of <5 mM initial FH. Spatially resolved analysis of the supernatant and mineral sediment including voltammetric microelectrodes, X-ray diffraction and Mössbauer spectroscopy revealed strong gradients of Fe 2+ in both the aqueous supernatant and mineral pellet, whereas a heterogeneous distribution of cells and minerals in the sediment pellet was detected. The highest cell density and, consequently, the initiation of FH reduction was found at the mineral-supernatant interface. This study demonstrates that small changes in incubation conditions can significantly influence and even change the experimental results of geomicrobiological experiments.

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“…ron(II)-oxidizing bacteria play a significant role in geochemical element cycling and are involved in iron redox transformation under oxic, microoxic, and anoxic conditions in the environment (1)(2)(3)(4). Their use of Fe(II) as electron donor at neutral pH leads to the formation of Fe(III) and rapid precipitation of poorly soluble Fe(III) (oxyhydr)oxide minerals.…”

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confidence: 99%

Potential Role of Nitrite for Abiotic Fe(II) Oxidation and Cell Encrustation during Nitrate Reduction by Denitrifying Bacteria

Klueglein

Zeitvogel

Stierhof

et al. 2014

Appl Environ Microbiol

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239

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The Global Iron Cycle

Cited by 64 publications

References 279 publications

Trace elements at the intersection of marine biological and geochemical evolution

Trace elements at the intersection of marine biological and geochemical evolution

Secondary Mineral Formation During Ferrihydrite Reduction byShewanella oneidensisMR-1 Depends on Incubation Vessel Orientation and Resulting Gradients of Cells, Fe²⁺and Fe Minerals

Potential Role of Nitrite for Abiotic Fe(II) Oxidation and Cell Encrustation during Nitrate Reduction by Denitrifying Bacteria

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The Global Iron Cycle

Cited by 64 publications

References 279 publications

Trace elements at the intersection of marine biological and geochemical evolution

Trace elements at the intersection of marine biological and geochemical evolution

Secondary Mineral Formation During Ferrihydrite Reduction byShewanella oneidensisMR-1 Depends on Incubation Vessel Orientation and Resulting Gradients of Cells, Fe2+and Fe Minerals

Potential Role of Nitrite for Abiotic Fe(II) Oxidation and Cell Encrustation during Nitrate Reduction by Denitrifying Bacteria

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Secondary Mineral Formation During Ferrihydrite Reduction byShewanella oneidensisMR-1 Depends on Incubation Vessel Orientation and Resulting Gradients of Cells, Fe²⁺and Fe Minerals