ArticleApplied and environmental microbiology2006
Coupled photochemical and enzymatic Mn(II) oxidation pathways of a planktonic Roseobacter-Like bacterium.
Article in Applied and environmental microbiology, 2006. 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, 83 citations in OpenAlex.
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- Mineralogical and Genomic Constraints on the Origin of Microbial Mn Oxide Formation in Complexed Microbial Community at the Terrestrial Hot Spring.Life (Basel, Switzerland) · 2022Article
- Manganese-contaminated groundwater treatment by novel bacterial isolates: kinetic study and mechanism analysis using synchrotron-based techniques.Scientific reports · 2020Article
- Mn oxide formation by phototrophs: Spatial and temporal patterns, with evidence of an enzymatic superoxide-mediated pathway.Scientific reports · 2019Article
- Article
- Manganese Oxide Biomineralization Provides Protection against Nitrite Toxicity in a Cell-Density-Dependent Manner.Applied and environmental microbiology · 2019Article
- Oxidative Formation and Removal of Complexed Mn(III) byFrontiers in microbiology · 2018Article
- Mechanistic insights into manganese oxidation of a soil-borne Mn(II)-oxidizing Escherichia coli strain by global proteomic and genetic analyses.Scientific reports · 2017Article
- Identification of a Third Mn(II) Oxidase Enzyme in Pseudomonas putida GB-1.Applied and environmental microbiology · 2016Article
- Biological Low-pH Mn(II) Oxidation in a Manganese Deposit Influenced by Metal-Rich Groundwater.Applied and environmental microbiology · 2016Article
- Profiling microbial communities in manganese remediation systems treating coal mine drainage.Applied and environmental microbiology · 2015Article
- Identification of Mn(II)-oxidizing bacteria from a low-pH contaminated former uranium mine.Applied and environmental microbiology · 2014Article
- Superoxide production by a manganese-oxidizing bacterium facilitates iodide oxidation.Applied and environmental microbiology · 2014Article
- Constraints on superoxide mediated formation of manganese oxides.Frontiers in microbiology · 2013Article
- Abiotic oxidation of Mn(II) and its effect on the oxidation of As(III) in the presence of nano-hematite.Ecotoxicology (London, England) · 2012Article
- Mn(II) oxidation by an ascomycete fungus is linked to superoxide production during asexual reproduction.Proceedings of the National Academy of Sciences of the United States of America · 2012Article
- Distribution of microfossils within polymetallic nodules: biogenic clusters within manganese layers.Marine biotechnology (New York, N.Y.) · 2012Article
- Analysis of in situ manganese(II) oxidation in the Columbia River and offshore plume: linking Aurantimonas and the associated microbial community to an active biogeochemical cycle.Environmental microbiology · 2011Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Bacteria belonging to the Roseobacter clade of the alpha-Proteobacteria occupy a wide range of environmental niches and are numerically abundant in coastal waters. Here we reveal that Roseobacter-like bacteria may play a previously unrecognized role in the oxidation and cycling of manganese (Mn) in coastal waters. A diverse array of Mn(II)-oxidizing Roseobacter-like species were isolated from Elkhorn Slough, a coastal estuary adjacent to Monterey Bay in California. One isolate (designated AzwK-3b), in particular, rapidly oxidizes Mn(II) to insoluble Mn(III, IV) oxides. Interestingly, AzwK-3b is 100% identical (at the 16S rRNA gene level) to a previously described Pfiesteria-associated Roseobacter-like bacterium, which is not able to oxidize Mn(II). The rates of manganese(II) oxidation by live cultures and cell-free filtrates are substantially higher when the preparations are incubated in the presence of light. The rates of oxidation by washed cell extracts, however, are light independent. Thus, AzwK-3b invokes two Mn(II) oxidation mechanisms when it is incubated in the presence of light, in contrast to the predominantly direct enzymatic oxidation in the dark. In the presence of light, production of photochemically active metabolites is coupled with initial direct enzymatic Mn(II) oxidation, resulting in higher Mn(II) oxidation rates. Thus, Roseobacter-like bacteria may not only play a previously unrecognized role in Mn(II) oxidation and cycling in coastal surface waters but also induce a novel photooxidation pathway that provides an alternative means of Mn(II) oxidation in the photic zone.
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