| [PMID]: | 28542238 |
| [Au] Autor: | Heim C; Quéric NV; Ionescu D; Schäfer N; Reitner J |
| [Ad] Endereço: | Department of Geobiology, Geoscience Centre, University of Göttingen, Göttingen, Germany. |
| [Ti] Título: | Frutexites-like structures formed by iron oxidizing biofilms in the continental subsurface (Äspö Hard Rock Laboratory, Sweden). |
| [So] Source: | PLoS One;12(5):e0177542, 2017. |
| [Is] ISSN: | 1932-6203 |
| [Cp] País de publicação: | United States |
| [La] Idioma: | eng |
| [Ab] Resumo: | Stromatolitic iron-rich structures have been reported from many ancient environments and are often described as Frutexites, a cryptic microfossil. Although microbial formation of such structures is likely, a clear relation to a microbial precursor is lacking so far. Here we report recent iron oxidizing biofilms which resemble the ancient Frutexites structures. The living Frutexites-like biofilms were sampled at 160 m depth in the Äspö Hard Rock Laboratory in Sweden. Investigations using microscopy, 454 pyrosequencing, FISH, Raman spectroscopy, biomarker and trace element analysis allowed a detailed view of the structural components of the mineralized biofilm. The most abundant bacterial groups were involved in nitrogen and iron cycling. Furthermore, Archaea are widely distributed in the Frutexites-like biofilm, even though their functional role remains unclear. Biomarker analysis revealed abundant sterols in the biofilm most likely from algal and fungal origins. Our results indicate that the Frutexites-like biofilm was built up by a complex microbial community. The functional role of each community member in the formation of the dendritic structures, as well as their potential relation to fossil Frutexites remains under investigation. |
| [Mh] Termos MeSH primário: |
Biofilmes
Ferro/metabolismo
Microbiologia
|
| [Mh] Termos MeSH secundário: |
Sequenciamento de Nucleotídeos em Larga Escala
Lipídeos/análise
Minerais/metabolismo
Análise de Sequência de DNA
Propriedades de Superfície
Suécia
Oligoelementos/análise
|
| [Pt] Tipo de publicação: | JOURNAL ARTICLE |
[Nm] Nome de substância:
| 0 (Lipids); 0 (Minerals); 0 (Trace Elements); E1UOL152H7 (Iron) |
| [Em] Mês de entrada: | 1709 |
| [Cu] Atualização por classe: | 170919 |
[Lr] Data última revisão:
| 170919 |
| [Sb] Subgrupo de revista: | IM |
| [Da] Data de entrada para processamento: | 170526 |
| [St] Status: | MEDLINE |
| [do] DOI: | 10.1371/journal.pone.0177542 |
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