ArticleEnvironmental science & technology2018
Dual Role of Humic Substances As Electron Donor and Shuttle for Dissimilatory Iron Reduction.
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 16 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed, 215 citations in OpenAlex.
- GSNO-functionalized hydroxyapatite nanofertilizer for prolonged delivery, detoxification, and yield improvement in maize.Nature communications · 2026Article
- Dissolved Organic Matter Composition and Microbial Functional Traits Regulate Carbon Mineralization Efficiency in Peatland Soils Under Experimental Warming and Nutrient Input.Microorganisms · 2026Article
- Microbial responses under sunlight-dark conditions accelerate sequestration and transformation of soil biogenic, redox and non-redox components, including As and Hg.Scientific reports · 2025Article
- Geopolymerization threatens the persistence of organic carbon associated with iron in anoxic environments.Nature communications · 2025Article
- High-level nitrogen removal achieved by Feammox-based autotrophic nitrogen conversion.Water research X · 2025Article
- Humin oxidation drives microbial dehalogenation in oligotrophic environments.The ISME journal · 2025Article
- Mineral-mediated stability of organic carbon in soil and relevant interaction mechanisms.Eco-Environment & Health · 2024Review
- Goethite and riboflavin synergistically enhance Cr(VI) reduction by Shewanella oneidensis MR-1.Biodegradation · 2023Article
- Latest development in the fabrication and use of lignin-derived humic acid.Biotechnology for biofuels and bioproducts · 2023Review
- Effect of TOC Concentration of Humic Substances as an Electron Shuttle on Redox Functional Groups Stimulating Microbial Cr(VI) Reduction.International journal of environmental research and public health · 2022Article
- Autotrophic Fe-Driven Biological Nitrogen Removal Technologies for Sustainable Wastewater Treatment.Frontiers in microbiology · 2022Review
- Biochar-Mediated Degradation of Roxarsone byFrontiers in microbiology · 2022Article
- Interactions between Humic Substances and Microorganisms and Their Implications for Nature-like Bioremediation Technologies.Molecules (Basel, Switzerland) · 2021Review
- Humin Assists Reductive Acetogenesis in Absence of Other External Electron Donor.International journal of environmental research and public health · 2020Article
- Impact of Fe(III) (Oxyhydr)oxides Mineralogy on Iron Solubilization and Associated Microbial Communities.Frontiers in microbiology · 2020Article
- Stability of Ferrihydrite-Humic Acid Coprecipitates under Iron-Reducing Conditions.Environmental science & technology · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
Dissimilatory iron-reducing bacteria (DIRB) are known to use humic substances (HS) as electron shuttles for dissimilatory iron reduction (DIR) by transferring electrons to HS-quinone moieties, which in turn rapidly reduce Fe(III) oxides. However, the potential for HS to serve as a source of organic carbon (OC) that can donate electrons for DIR is unknown. We studied whether humic acids (HA) and humins (HM) recovered from peat soil by sodium pyrophosphate extraction could serve as both electron shuttles and electron donors for DIR by freshwater sediment microorganisms. Both HA and HM served as electron shuttles in cultures amended with glucose. However, only HA served as an electron donor for DIR. Metagenomes from HA-containing cultures had an overrepresentation of genes involved in polysaccharide and to a lesser extent aromatic compound degradation, suggesting complex OC metabolism. Genomic searches for the porin-cytochrome complex involved in DIR resulted in matches to Ignavibacterium/Melioribacter, DIRB capable of polymeric OC metabolism. These results indicate that such taxa may have played a role in both DIR and decomposition of complex OC. Our results suggest that decomposition of HS coupled to DIR and other anaerobic pathways could play an important role in soil and sediment OC metabolism.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.