ArticleApplied and environmental microbiology2014
Syntrophs dominate sequences associated with the mercury methylation-related gene hgcA in the water conservation areas of the Florida Everglades.
Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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Who cites it
25 citing papers in PubMed, 101 citations in OpenAlex.
- The Effects of Forest Harvesting on Total and Methylmercury Concentrations in Surface Waters Depend on Harvest Practices and Physical Site Characteristics.Environmental science & technology · 2025Article
- Sulfate Reduction Drives Elevated Methylmercury Formation in the Water Column of a Eutrophic Freshwater Lake.Environmental science & technology · 2025Article
- Functional Genes and Transcripts Indicate the Existent and Active Microbial Mercury-Methylating Community in Mangrove Intertidal Sediments of an Urbanized Bay.Microorganisms · 2024Article
- Recent advance of microbial mercury methylation in the environment.Applied microbiology and biotechnology · 2024Review
- Experimentally Induced Dieback Conditions LimitMicroorganisms · 2023Article
- Nutrient Inputs Stimulate Mercury Methylation by Syntrophs in a Subarctic Peatland.Frontiers in microbiology · 2021Article
- Mercury Methylation Genes Identified across Diverse Anaerobic Microbial Guilds in a Eutrophic Sulfate-Enriched Lake.Environmental science & technology · 2020Article
- Biotic formation of methylmercury: A bio-physico-chemical conundrum.Limnology and oceanography · 2020Review
- An ImprovedFrontiers in microbiology · 2020Article
- Periphyton and Flocculent Materials Are Important Ecological Compartments Supporting Abundant and Diverse Mercury Methylator Assemblages in the Florida Everglades.Applied and environmental microbiology · 2019Article
- Mercury methylating microbial communities of boreal forest soils.Scientific reports · 2019Article
- Methanogens and Iron-Reducing Bacteria: the Overlooked Members of Mercury-Methylating Microbial Communities in Boreal Lakes.Applied and environmental microbiology · 2018Article
- Syntrophic pathways for microbial mercury methylation.The ISME journal · 2018Article
- Review
- Geobacteraceae are important members of mercury-methylating microbial communities of sediments impacted by waste water releases.The ISME journal · 2018Article
- Mercury-methylating genes dsrB and hgcA in soils/sediments of the Three Gorges Reservoir.Environmental science and pollution research international · 2017Article
- Water management impacts rice methylmercury and the soil microbiome.The Science of the total environment · 2016Article
- Development and Validation of Broad-Range Qualitative and Clade-Specific Quantitative Molecular Probes for Assessing Mercury Methylation in the Environment.Applied and environmental microbiology · 2016Article
- Persistent Hg contamination and occurrence of Hg-methylating transcript (hgcA) downstream of a chlor-alkali plant in the Olt River (Romania).Environmental science and pollution research international · 2016Article
- Distribution, activities, and interactions of methanogens and sulfate-reducing prokaryotes in the Florida Everglades.Applied and environmental microbiology · 2015Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The mechanisms and rates of mercury methylation in the Florida Everglades are of great concern because of potential adverse impacts on human and wildlife health through mercury accumulation in aquatic food webs. We developed a new PCR primer set targeting hgcA, a gene encoding a corrinoid protein essential for Hg methylation across broad phylogenetic boundaries, and used this primer set to study the distribution of hgcA sequences in soils collected from three sites along a gradient in sulfate and nutrient concentrations in the northern Everglades. The sequences obtained were distributed in diverse phyla, including Proteobacteria, Chloroflexi, Firmicutes, and Methanomicrobia; however, hgcA clone libraries from all sites were dominated by sequences clustering within the order Syntrophobacterales of the Deltaproteobacteria (49 to 65% of total sequences). dsrB mRNA sequences, representing active sulfate-reducing prokaryotes at the time of sampling, obtained from these sites were also dominated by Syntrophobacterales (75 to 89%). Laboratory incubations with soils taken from the site low in sulfate concentrations also suggested that Hg methylation activities were primarily mediated by members of the order Syntrophobacterales, with some contribution by methanogens, Chloroflexi, iron-reducing Geobacter, and non-sulfate-reducing Firmicutes inhabiting the sites. This suggests that prokaryotes distributed within clades defined by syntrophs are the predominant group controlling methylation of Hg in low-sulfate areas of the Everglades. Any strategy for managing mercury methylation in the Everglades should consider that net mercury methylation is not limited to the action of sulfate reduction.
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