論文 - 詳細
| RRC ID | 50890 |
|---|---|
| 著者 | Szeinbaum N, Lin H, Brandes JA, Taillefert M, Glass JB, DiChristina TJ. |
| タイトル | Microbial manganese(III) reduction fuelled by anaerobic acetate oxidation. |
| ジャーナル | Environ Microbiol |
| Abstract |
Soluble manganese in the intermediate +III oxidation state (Mn3+ ) is a newly identified oxidant in anoxic environments, whereas acetate is a naturally abundant substrate that fuels microbial activity. Microbial populations coupling anaerobic acetate oxidation to Mn3+ reduction, however, have yet to be identified. We isolated a Shewanella strain capable of oxidizing acetate anaerobically with Mn3+ as the electron acceptor, and confirmed this phenotype in other strains. This metabolic connection between acetate and soluble Mn3+ represents a new biogeochemical link between carbon and manganese cycles. Genomic analyses uncovered four distinct genes that allow for pathway variations in the complete dehydrogenase-driven TCA cycle that could support anaerobic acetate oxidation coupled to metal reduction in Shewanella and other Gammaproteobacteria. An oxygen-tolerant TCA cycle supporting anaerobic manganese reduction is thus a new connection in the manganese-driven carbon cycle, and a new variable for models that use manganese as a proxy to infer oxygenation events on early Earth. |
| 巻・号 | 19(9) |
| ページ | 3475-3486 |
| 公開日 | 2017-9-1 |
| DOI | 10.1111/1462-2920.13829 |
| PMID | 28631370 |
| PMC | PMC6295286 |
| MeSH | Acetates / metabolism* Carbon Cycle / genetics Carbon Cycle / physiology Citric Acid Cycle / genetics Citric Acid Cycle / physiology* Manganese / metabolism* Oxidation-Reduction Oxidoreductases / metabolism Shewanella / genetics Shewanella / metabolism* |
| IF | 4.933 |
| 引用数 | 5 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 10 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 一般微生物 | JCM 21037 |