ArticleApplied and environmental microbiology2007
Changes in microbial community composition and geochemistry during uranium and technetium bioimmobilization.
Article in Applied and environmental microbiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 37 citations in OpenAlex.
- In-field bioreactors demonstrate dynamic shifts in microbial communities in response to geochemical perturbations.PloS one · 2020Article
- U(VI) reduction in sulfate-reducing subsurface sediments amended with ethanol or acetate.Applied and environmental microbiology · 2013Article
- Partial genome assembly for a candidate division OP11 single cell from an anoxic spring (Zodletone Spring, Oklahoma).Applied and environmental microbiology · 2011Article
- How sulphate-reducing microorganisms cope with stress: lessons from systems biology.Nature reviews. Microbiology · 2011Review
- Mercury and other heavy metals influence bacterial community structure in contaminated Tennessee streams.Applied and environmental microbiology · 2011Article
- Influence of uranium on bacterial communities: a comparison of natural uranium-rich soils with controls.PloS one · 2011Article
- Isolation and physiology of bacteria from contaminated subsurface sediments.Applied and environmental microbiology · 2010Article
- Microbial diversity in uranium mining-impacted soils as revealed by high-density 16S microarray and clone library.Microbial ecology · 2010Article
- U(VI) sequestration in hydroxyapatite produced by microbial glycerol 3-phosphate metabolism.Applied and environmental microbiology · 2009Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In a previous column study, we investigated the long-term impact of ethanol additions on U and Tc mobility in groundwater (M. M. Michalsen et al., Environ. Sci. Technol. 40:7048-7053, 2006). Ethanol additions stimulated iron- and sulfate-reducing conditions and significantly enhanced U and Tc removal from groundwater compared to an identical column that received no ethanol additions (control). Here we present the results of a combined signature lipid and nucleic acid-based microbial community characterization in sediments collected from along the ethanol-stimulated and control column flow paths. Phospholipid fatty acid analysis showed both an increase in microbial biomass (approximately 2 orders of magnitude) and decreased ratios of cyclopropane to monoenoic precursor fatty acids in the stimulated column compared to the control, which is consistent with electron donor limitation in the control. Spatial shifts in microbial community composition were identified by PCR-denaturing gradient gel electrophoresis analysis as well as by quantitative PCR, which showed that Geobacteraceae increased significantly near the stimulated-column outlet, where soluble electron acceptors were largely depleted. Clone libraries of 16S rRNA genes from selected flow path locations in the stimulated column showed that Proteobacteria were dominant near the inlet (46 to 52%), while members of candidate division OP11 were dominant near the outlet (67%). Redundancy analysis revealed a highly significant difference (P = 0.0003) between microbial community compositions within stimulated and control sediments, with geochemical variables explaining 68% of the variance in community composition on the first two canonical axes.
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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.