The molecular biogeochemistry of manganese(II) oxidation

Geszvain, Kati; Butterfield, Cristina N.; Davis, R. E.; Madison, Andrew S.; Lee, Sung Woo; Parker, Dorothy L.; Soldatova, Alexandra; Spiro, Thomas G.; Luther, George W.; Tebo, Bradley M.

doi:10.1042/bst20120229

Cited by 100 publications

(67 citation statements)

References 34 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It also encompasses numerous confirmed examples of Mn(II) oxidation in the Alpha-, Beta-, Gamma-, and Deltaproteobacteria (10,11,14,15,24,55). Indeed, many of the model Mn(II)-oxidizing bacteria used to elucidate mechanisms of oxidation belong to this phylum (23)(24)(25)58). However, since the relative abundance of proteobacterial taxa did not differ significantly between MRBs, even at increasingly fine taxonomic resolution, and the relative abundance of any of the other bacterial phyla did not differ, the taxonomic profile of the bacterial communities cannot be correlated with differences in the proportion of Mn(II) removed by the four MRBs.…”

Section: Discussionmentioning

confidence: 99%

Profiling Microbial Communities in Manganese Remediation Systems Treating Coal Mine Drainage

Chaput

Hansel

Burgos

et al. 2015

Appl Environ Microbiol

View full text Add to dashboard Cite

cWater discharging from abandoned coal mines can contain extremely high manganese levels. Removing this metal is an ongoing challenge. Passive Mn(II) removal beds (MRBs) contain microorganisms that oxidize soluble Mn(II) to insoluble Mn(III/IV) minerals, but system performance is unpredictable. Using amplicon pyrosequencing, we profiled the bacterial, fungal, algal, and archaeal communities in four MRBs, performing at different levels, in Pennsylvania to determine whether they differed among MRBs and from surrounding soil and to establish the relative abundance of known Mn(II) oxidizers. Archaea were not detected; PCRs with archaeal primers returned only nontarget bacterial sequences. Fungal taxonomic profiles differed starkly between sites that remove the majority of influent Mn and those that do not, with the former being dominated by Ascomycota (mostly Dothideomycetes) and the latter by Basidiomycota (almost entirely Agaricomycetes). Taxonomic profiles for the other groups did not differ significantly between MRBs, but operational taxonomic unit-based analyses showed significant clustering by MRB with all three groups (P < 0.05). Soil samples clustered separately from MRBs in all groups except fungi, whose soil samples clustered loosely with their respective MRB. Known Mn(II) oxidizers accounted for a minor proportion of bacterial sequences (up to 0.20%) but a greater proportion of fungal sequences (up to 14.78%). MRB communities are more diverse than previously thought, and more organisms may be capable of Mn(II) oxidation than are currently known.

show abstract

Section: Discussionmentioning

confidence: 99%

Profiling Microbial Communities in Manganese Remediation Systems Treating Coal Mine Drainage

Chaput

Hansel

Burgos

et al. 2015

Appl Environ Microbiol

View full text Add to dashboard Cite

show abstract

“…Most of the Mn oxidation in aquatic environments is attributed to the activity of Mn-oxidizing bacteria, because abiotic Mn oxidation is kinetically limited at circumneutral pH, and Mn-oxidizing bacteria are widespread in aquatic environments, especially at oxic-anoxic interfaces, and contribute to the formation of Mn-oxides [53]. They are widely distributed across the bacterial phylogenetic tree, and various processes of Mn biomineralization have been described, involving either enzymatic processes [54,55] or the export of reactive oxygen species [56], in any case leading to the extracellular formation of Mn-oxides. Specific morphologies of Mn-oxides have been described that are similar to the present observations [57].…”

Section: Transition From Mn-to Fe-mineral Formation (50-60-m Depth)mentioning

confidence: 99%

Mineralogical Diversity in Lake Pavin: Connections with Water Column Chemistry and Biomineralization Processes

et al. 2016

View full text Add to dashboard Cite

Abstract:As biominerals are good tracers of microbial interactions with the environment, they may provide signatures of microbial evolution and paleoenvironmental conditions. Since modern analogues of past environments help with defining proxies and biosignatures, we explored microbe mineral interactions in the water column of a maar lake, located in France: Lake Pavin. This lake is considered as a potential Precambrian ocean analogue, as it is ferruginous and meromictic, i.e., stratified with a superficial O 2 -rich layer (mixolimnion) and a deeper permanently anoxic layer (monimolimnion). We combined bulk chemical analyses of dissolved and particulate matter in combination with electron microscopy analyses of the particulate matter at different depths along the water column. The mineralogy changed along with water chemistry, and most of the minerals were intimately associated with microorganisms. Evolution of the redox conditions with depth leads to the successive precipitation of silica and carbonates, Mn-bearing, Fe-bearing and S-containing phases, with a predominance of phosphates in the monimolimnion. This scheme parallels the currently-assessed changes of microbial diversity with depth. The present results corroborate previous studies that suggested a strong influence of microbial activity on mineralogical diversity through extracellular and intracellular biomineralization. This paper reports detailed data on mineralogical profiles of the water column and encourages extended investigation of these processes.

show abstract

“…Direct oxidation, on the other hand, can occur via the production of polysaccharides or enzymatic activity (as summarized in reference 2). Although Mn(IV) formation could generate energy for organisms, this has not been definitively shown for any organism (4,5). However, Mn oxidation was shown to increase the survival of Pseudomonas putida GB-1 in the presence of reactive oxygen species (ROS) (18).…”

mentioning

confidence: 99%

“…Therefore, environmental Mn oxides, such as birnessite, are presumed to be of biological origin, e.g., biogenic (3). Mn(II)-oxidizing bacteria (MOB) are phylogenetically diverse and are detected in many different environments, such as soils, water (fresh to marine), and sediments (4). While microorganisms readily oxidize Mn(II) and precipitate Mn oxides at pH ϳ7 under oxic and hypoxic conditions (5), little is known about biological oxidation at acidic pH.…”

mentioning

confidence: 99%

Identification of Mn(II)-Oxidizing Bacteria from a Low-pH Contaminated Former Uranium Mine

Akob

Bohu

Beyer

et al. 2014

Appl Environ Microbiol

View full text Add to dashboard Cite

e Biological Mn oxidation is responsible for producing highly reactive and abundant Mn oxide phases in the environment that can mitigate metal contamination. However, little is known about Mn oxidation in low-pH environments, where metal contamination often is a problem as the result of mining activities. We isolated two Mn(II)-oxidizing bacteria (MOB) at pH 5.5 (Duganella isolate AB_14 and Albidiferax isolate TB-2) and nine strains at pH 7 from a former uranium mining site. Isolate TB-2 may contribute to Mn oxidation in the acidic Mn-rich subsoil, as a closely related clone represented 16% of the total community. All isolates oxidized Mn over a small pH range, and isolates from low-pH samples only oxidized Mn below pH 6. Two strains with different pH optima differed in their Fe requirements for Mn oxidation, suggesting that Mn oxidation by the strain found at neutral pH was linked to Fe oxidation. Isolates tolerated Ni, Cu, and Cd and produced Mn oxides with similarities to todorokite and birnessite, with the latter being present in subsurface layers where metal enrichment was associated with Mn oxides. This demonstrates that MOB can be involved in the formation of biogenic Mn oxides in both moderately acidic and neutral pH environments.

show abstract

The molecular biogeochemistry of manganese(II) oxidation

Cited by 100 publications

References 34 publications

Profiling Microbial Communities in Manganese Remediation Systems Treating Coal Mine Drainage

Profiling Microbial Communities in Manganese Remediation Systems Treating Coal Mine Drainage

Mineralogical Diversity in Lake Pavin: Connections with Water Column Chemistry and Biomineralization Processes

Identification of Mn(II)-Oxidizing Bacteria from a Low-pH Contaminated Former Uranium Mine

Contact Info

Product

Resources

About