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Titolo:
A marine microbial consortium apparently mediating anaerobic oxidation of methane
Autore:
Boetius, A; Ravenschlag, K; Schubert, CJ; Rickert, D; Widdel, F; Gieseke, A; Amann, R; Jorgensen, BB; Witte, U; Pfannkuche, O;
Indirizzi:
Max Planck Inst Marine Microbiol, D-28359 Bremen, Germany Max Planck Inst Marine Microbiol Bremen Germany D-28359 Bremen, Germany GEOMAR Res Ctr Marine Geosci, D-24148 Kiel, Germany GEOMAR Res Ctr Marine Geosci Kiel Germany D-24148 D-24148 Kiel, Germany
Titolo Testata:
NATURE
fascicolo: 6804, volume: 407, anno: 2000,
pagine: 623 - 626
SICI:
0028-0836(20001005)407:6804<623:AMMCAM>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
SULFATE-REDUCING BACTERIA; SPATIAL-ORGANIZATION; ACTIVATED-SLUDGE; SEDIMENTS; PROBES; ABUNDANCE; FLOW;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Boetius, A Max Planck Inst Marine Microbiol, D-28359 Bremen, Germany Max Planck Inst Marine Microbiol Bremen Germany D-28359 rmany
Citazione:
A. Boetius et al., "A marine microbial consortium apparently mediating anaerobic oxidation of methane", NATURE, 407(6804), 2000, pp. 623-626

Abstract

A large fraction of globally produced methane is converted to CO2 by anaerobic oxidation in marine sediments(1). Strong geochemical evidence for net methane consumption in anoxic sediments is based on methane profiles(2), radiotracer experiments(3) and stable carbon isotope data(4). But the elusivemicroorganisms mediating this reaction have not yet been isolated, and thepathway of anaerobic oxidation of methane is insufficiently understood. Recent data suggest that certain archaea reverse the process of methanogenesis by interaction with sulphate-reducing bacteria(5-7). Here we provide microscopic evidence for a structured consortium of archaea and sulphate-reducing bacteria, which we identified by fluorescence in situ hybridization using specific 16S rRNA-targeted oligonucleotide probes. In this example of a structured archaeal-bacterial symbiosis, the archaea grow in dense aggregates of about 100 cells and are surrounded by sulphate-reducing bacteria. These aggregates were abundant in gas-hydrate-rich sediments with extremely high rates of methane-based sulphate reduction, and apparently mediate anaerobic oxidation of methane.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 08:23:19