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Phototrophic Fe(II) oxidation in an atmosphere of H_2: implications for Archean banded iron formations

Croal, L. R. and Jiao, Y. and Kappler, A. and Newman, D. K. (2009) Phototrophic Fe(II) oxidation in an atmosphere of H_2: implications for Archean banded iron formations. Geobiology, 7 (1). pp. 21-24. ISSN 1472-4677. http://resolver.caltech.edu/CaltechAUTHORS:20130312-101350418

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Abstract

The effect of hydrogen on the rate of phototrophic Fe(II) oxidation by two species of purple bacteria was measured at two different bicarbonate concentrations. Hydrogen slowed Fe(II) oxidation to varying degrees depending on the bicarbonate concentration, but even the slowest rate of Fe(II) oxidation remained on the same order of magnitude as that estimated to have been necessary to deposit the Hamersley banded iron formations. Given the hydrogen and bicarbonate concentrations inferred for the Archean, our data suggest that Fe(II) phototrophy could have been a viable process at this time.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1111/j.1472-4669.2008.00185.x DOIUNSPECIFIED
http://onlinelibrary.wiley.com/doi/10.1111/j.1472-4669.2008.00185.x/abstractPublisherUNSPECIFIED
ORCID:
AuthorORCID
Newman, D. K.0000-0003-1647-1918
Additional Information:© 2008 The Authors. Journal compilation © 2008 Blackwell Publishing Ltd. Received 15 February 2008; accepted 25 November 2008. Article first published online: 19 Dec. 2008. We thank the reviewers for constructive comments and the members of the Newman laboratory for helpful discussion. This work was supported by grants from the Packard Foundation and Howard Hughes Medical Institute to D.K.N. and an NSF graduate fellowship to L.R.C. Authors Croal and Jiao contributed equally to this work.
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Funding AgencyGrant Number
Packard Foundation UNSPECIFIED
Howard Hughes Medical Institute (HHMI)UNSPECIFIED
NSF Graduate FellowshipUNSPECIFIED
Record Number:CaltechAUTHORS:20130312-101350418
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130312-101350418
Official Citation:CROAL, L. R., JIAO, Y., KAPPLER, A. and NEWMAN, D. K. (2009), Phototrophic Fe(II) oxidation in an atmosphere of H2: implications for Archean banded iron formations. Geobiology, 7: 21–24. doi: 10.1111/j.1472-4669.2008.00185.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37463
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 Mar 2013 21:30
Last Modified:24 Oct 2017 15:52

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