ArticleFrontiers in microbiology2013
Surprising abundance of Gallionella-related iron oxidizers in creek sediments at pH 4.4 or at high heavy metal concentrations.
Article in Frontiers in microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 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
36 citing papers in PubMed.
- Metals and Microbes: Microbial Community Diversity and Antibiotic Resistance in the Animas River Watershed, Colorado, USA.Microorganisms · 2026Article
- Diversity of Groundwater Microbial Communities near Sludge Repositories with Different Types and Levels of Pollution.Life (Basel, Switzerland) · 2025Article
- Microbial diversity at remediated former gold and copper mines and the metal tolerance of indigenous microbial strains.Applied and environmental microbiology · 2025Article
- Microbial diversity, metabolic properties, and biotechnological prospects of acid-sulfate soils.World journal of microbiology & biotechnology · 2025Review
- Custom-made medium approach for effective enrichment and isolation of chemolithotrophic iron-oxidizing bacteria.FEMS microbiology ecology · 2025Article
- Hydrogeological and geological partitioning of iron and sulfur cycling bacterial consortia in subsurface coal-based mine waters.FEMS microbiology ecology · 2025Article
- Integrating soil bioavailability and plant physiological responses to establish region-specific safety thresholds for cadmium and arsenic in rice cultivated in karst regions.Frontiers in plant science · 2025Article
- Metal-oxide precipitation influences microbiome structure in hyporheic zones receiving acid rock drainage.Applied and environmental microbiology · 2024Article
- Microbial community response to hydrocarbon exposure in iron oxide mats: an environmental study.Frontiers in microbiology · 2024Article
- Gallionellaceae pangenomic analysis reveals insight into phylogeny, metabolic flexibility, and iron oxidation mechanisms.mSystems · 2023Article
- Bacterial and archaeal community distributions and cosmopolitanism across physicochemically diverse hot springs.ISME communications · 2023Article
- Linking Groundwater to Surface Discharge Ecosystems: Archaeal, Bacterial, and Eukaryotic Community Diversity and Structure in Quebec (Canada).Microorganisms · 2023Article
- Mixotrophy broadens the ecological niche range of the iron oxidizer Sideroxydans sp. CL21 isolated from an iron-rich peatland.FEMS microbiology ecology · 2023Article
- Indigenous microbial populations of abandoned mining sites and their role in natural attenuation.Archives of microbiology · 2022Review
- Unraveling Fe(II)-Oxidizing Mechanisms in a Facultative Fe(II) Oxidizer, Sideroxydans lithotrophicus Strain ES-1, via Culturing, Transcriptomics, and Reverse Transcription-Quantitative PCR.Applied and environmental microbiology · 2022Article
- Draft Genome Sequence ofMicrobiology resource announcements · 2021Article
- Improvement of nitrogen removal with iron scraps in floating treatment wetlands.Environmental science and pollution research international · 2021Article
- Responses of soil microbiome to steel corrosion.NPJ biofilms and microbiomes · 2021Article
- Mixotrophic Iron-OxidizingApplied and environmental microbiology · 2020Article
- Iron is not everything: unexpected complex metabolic responses between iron-cycling microorganisms.The ISME journal · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We identified and quantified abundant iron-oxidizing bacteria (FeOB) at three iron-rich, metal-contaminated creek sites with increasing sediment pH from extremely acidic (R1, pH 2.7), to moderately acidic (R2, pH 4.4), to slightly acidic (R3, pH 6.3) in a former uranium-mining district. The geochemical parameters showed little variations over the 1.5 year study period. The highest metal concentrations found in creek sediments always coincided with the lowest metal concentrations in creek water at the slightly acidic site R3. Sequential extractions of R3 sediment revealed large portions of heavy metals (Ni, Cu, Zn, Pb, U) bound to the iron oxide fraction. Light microscopy of glass slides exposed in creeks detected twisted stalks characteristic of microaerobic FeOB of the family Gallionellaceae at R3 but also at the acidic site R2. Sequences related to FeOB such as Gallionella ferruginea, Sideroxydans sp. CL21, Ferritrophicum radicicola, and Acidovorax sp. BrG1 were identified in the sediments. The highest fraction of clone sequences similar to the acidophilic "Ferrovum myxofaciens" was detected in R1. Quantitative PCR using primer sets specific for Gallionella spp., Sideroxydans spp., and "Ferrovum myxofaciens" revealed that ~72% (R2 sediment) and 37% (R3 sediment) of total bacterial 16S rRNA gene copies could be assigned to groups of FeOB with dominance of microaerobic Gallionella spp. at both sites. Gallionella spp. had similar and very high absolute and relative gene copy numbers in both sediment communities. Thus, Gallionella-like organisms appear to exhibit a greater acid and metal tolerance than shown before. Microaerobic FeOB from R3 creek sediment enriched in newly developed metal gradient tubes tolerated metal concentrations of 35 mM Co, 24 mM Ni, and 1.3 mM Cd, higher than those in sediments. Our results will extend the limited knowledge of FeOB at contaminated, moderately to slightly acidic environments.
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.