ArticleEnvironmental science & technology2018
Identifying and Quantifying the Intermediate Processes during Nitrate-Dependent Iron(II) Oxidation.
Article in Environmental science & technology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 137 citations in OpenAlex.
- Geobacter metallireducens-evaluation of its sustainability in nitrate-reducing Fe(II) oxidation under autotrophic conditions.FEMS microbiology ecology · 2026Article
- Impact of the Fenton pretreatment on enhanced biological phosphorus removal: emphasizing variations in microbial community and metabolism.Biodegradation · 2026Article
- Evaluation of Thiobacillus denitrificans' sustainability in nitrate-reducing Fe(II) oxidation and the potential significance of Fe(II) as a growth-supporting reductant.FEMS microbiology ecology · 2025Article
- Nitrous oxide is the main product during nitrate reduction by a novel lithoautotrophic iron(II)-oxidizing culture from an organic-rich paddy soil.Applied and environmental microbiology · 2025Article
- Model-Based Analysis of Arsenic Retention by Stimulated Iron Mineral Transformation under Coastal Aquifer Conditions.ACS ES&T water · 2024Article
- "ISME communications · 2024Article
- Single Phototrophic Bacterium-Mediated Iron Cycling in Aquatic Environments.Research (Washington, D.C.) · 2024Article
- Nitrogen removal in freshwater sediments of riparian zone: N-loss pathways and environmental controls.Frontiers in microbiology · 2023Article
- The Nitrogen Dynamics of Newly Developed Lignite-Based Controlled-Release Fertilisers in the Soil-Plant Cycle.Plants (Basel, Switzerland) · 2022Article
- Pyrite-Based Autotrophic Denitrifying Microorganisms Derived from Paddy Soils: Effects of Organic Co-Substrate Addition.International journal of environmental research and public health · 2022Article
- Underestimation about the Contribution of Nitrate Reducers to Iron Cycling Indicated byMolecules (Basel, Switzerland) · 2022Article
- PioABC-Dependent Fe(II) Oxidation during Photoheterotrophic Growth on an Oxidized Carbon Substrate Increases Growth Yield.Applied and environmental microbiology · 2022Article
- Elucidating heterogeneous iron biomineralization patterns in a denitrifying As(iii)-oxidizing bacterium: implications for arsenic immobilization.Environmental science. Nano · 2022Article
- Effectiveness of Exogenous FeInternational journal of environmental research and public health · 2022Article
- Arsenic Transformation in Soil-Rice System Affected by Iron-Oxidizing Strain (Frontiers in microbiology · 2022Article
- Unraveling biogeochemical complexity through better integration of experiments and modeling.Environmental science. Processes & impacts · 2021Review
- Active sulfur cycling in the terrestrial deep subsurface.The ISME journal · 2020Article
- Model-Based Analysis of Arsenic Immobilization via Iron Mineral Transformation under Advective Flows.Environmental science & technology · 2018Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
Abstract
Microbially driven nitrate-dependent iron (Fe) oxidation (NDFO) in subsurface environments has been intensively studied. However, the extent to which Fe(II) oxidation is biologically catalyzed remains unclear because no neutrophilic iron-oxidizing and nitrate reducing autotroph has been isolated to confirm the existence of an enzymatic pathway. While mixotrophic NDFO bacteria have been isolated, understanding the process is complicated by simultaneous abiotic oxidation due to nitrite produced during denitrification. In this study, the relative contributions of biotic and abiotic processes during NDFO were quantified through the compilation and model-based interpretation of previously published experimental data. The kinetics of chemical denitrification by Fe(II) (chemodenitrification) were assessed, and compelling evidence was found for the importance of organic ligands, specifically exopolymeric substances secreted by bacteria, in enhancing abiotic oxidation of Fe(II). However, nitrite alone could not explain the observed magnitude of Fe(II) oxidation, with 60-75% of overall Fe(II) oxidation attributed to an enzymatic pathway for investigated strains: Acidovorax ( A.) strain BoFeN1, 2AN, A. ebreus strain TPSY, Paracoccus denitrificans Pd 1222, and Pseudogulbenkiania sp. strain 2002. By rigorously quantifying the intermediate processes, this study eliminated the potential for abiotic Fe(II) oxidation to be exclusively responsible for NDFO and verified the key contribution from an additional, biological Fe(II) oxidation process catalyzed by NDFO bacteria.
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