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Applied and Environmental Microbiology, August 2001, p. 3750-3752, Vol. 67, No. 8
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.8.3750-3752.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Evidence for Iron-Dependent Nitrate Respiration in the Dissimilatory Iron-Reducing Bacterium Geobacter metallireducens

John M. Senkodagger and John F. Stolz*

Department of Biological Sciences, Duquesne University, Pittsburgh, Pennsylvania 15219

Received 9 May 2000/Accepted 31 May 2001

The dissimilatory iron-reducing bacterium Geobacter metallireducens was found to require iron at a concentration in excess of 50 µM for continuous cultivation on nitrate. Growth yield (~3-fold), cytochrome c content (~7-fold), and nitrate (~4.5-fold) and nitrite (~70-fold) reductase activities were all increased significantly when the growth medium was amended with 500 µM iron.

* Corresponding author. Mailing address: Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15219. Phone: (412) 396-4867. Fax: (412) 396-5907. E-mail: stolz{at}duq.edu.

dagger Present address: Department of Botany and Microbiology, University of Oklahoma, Norman, Okla.

Applied and Environmental Microbiology, August 2001, p. 3750-3752, Vol. 67, No. 8
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.8.3750-3752.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


This article has been cited by other articles:

  • Matocha, C. J., Coyne, M. S. (2007). Short-term Response of Soil Iron to Nitrate Addition. Soil Sci. 71: 108-117 [Abstract] [Full Text]  


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