論文 - 詳細
| RRC ID | 71069 |
|---|---|
| 著者 | Sorokin DY, Messina E, Smedile F, La Cono V, Hallsworth JE, Yakimov MM. |
| タイトル | Carbohydrate-dependent sulfur respiration in halo(alkali)philic archaea. |
| ジャーナル | Environ Microbiol |
| Abstract |
Archaea are environmentally ubiquitous on Earth, and their extremophilic and metabolically versatile phenotypes make them useful as model systems for astrobiology. Here, we reveal a new functional group of halo(natrono)archaea able to utilize alpha-d-glucans (amylopectin, amylose and glycogen), sugars, and glycerol as electron donors and carbon sources for sulfur respiration. They are facultative anaerobes enriched from hypersaline sediments with either amylopectin, glucose or glycerol as electron/carbon sources and elemental sulfur as the terminal electron acceptor. They include 10 strains of neutrophilic haloarchaea from circum pH-neutral lakes and one natronoarchaeon from soda-lake sediments. The neutrophilic isolates can grow by fermentation, although addition of S0 or dimethyl sulfoxide increased growth rate and biomass yield (with a concomitant decrease in H2 ). Natronoarchaeal isolate AArc-S grew only by respiration, either anaerobically with S0 or thiosulfate as the terminal electron acceptor, or aerobically. Through genome analysis of five representative strains, we detected the full set of enzymes required for the observed catabolic and respiratory phenotypes. These findings provide evidence that sulfur-respiring haloarchaea partake in biogeochemical sulfur cycling, linked to terminal anaerobic carbon mineralization in hypersaline anoxic habitats. We discuss the implications for life detection in analogue environments such as the polar subglacial brine-lakes of Mars. |
| 巻・号 | 23(7) |
| ページ | 3789-3808 |
| 公開日 | 2021-7-1 |
| DOI | 10.1111/1462-2920.15421 |
| PMID | 33538376 |
| MeSH | Alkalies* Archaea* Carbohydrates Phylogeny Respiration Sulfur |
| 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 | 2 |
| 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 | JCM34031 JCM34302 JCM34303 |