Evidence for Iron-Dependent Nitrate Respiration in the Dissimilatory Iron-Reducing Bacterium Geobacter metallireducens
Open Access
- 1 August 2001
- journal article
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 67 (8) , 3750-3752
- https://doi.org/10.1128/aem.67.8.3750-3752.2001
Abstract
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.Keywords
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