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Titolo:
Anaerobic utilization of alkylbenzenes and n-alkanes from crude oil in an enrichment culture of denitrifying bacteria affiliating with the beta-subclass of Proteobacteria
Autore:
Rabus, R; Wilkes, H; Schramm, A; Harms, G; Behrends, A; Amann, R; Widdel, F;
Indirizzi:
Max Planck Inst Marine Mikrobiol, D-28359 Bremen, Germany Max Planck Inst Marine Mikrobiol Bremen Germany D-28359 Bremen, Germany Forschungszentrum Julich GMBH, Inst Erdol & Organ Geochem ICG4, D-52428 Julich, Germany Forschungszentrum Julich GMBH Julich Germany D-52428 428 Julich, Germany
Titolo Testata:
ENVIRONMENTAL MICROBIOLOGY
fascicolo: 2, volume: 1, anno: 1999,
pagine: 145 - 157
SICI:
1462-2912(199904)1:2<145:AUOAAN>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SULFATE-REDUCING BACTERIUM; IN-SITU IDENTIFICATION; THAUERA-AROMATICA; INITIAL REACTIONS; PURE CULTURES; WHOLE CELLS; M-XYLENE; SP-NOV; TOLUENE; OXIDATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
59
Recensione:
Indirizzi per estratti:
Indirizzo: Rabus, R Max Planck Inst Marine Mikrobiol, Celsiusstr 1, D-28359 Bremen, Germany Max Planck Inst Marine Mikrobiol Celsiusstr 1 Bremen Germany D-28359
Citazione:
R. Rabus et al., "Anaerobic utilization of alkylbenzenes and n-alkanes from crude oil in an enrichment culture of denitrifying bacteria affiliating with the beta-subclass of Proteobacteria", ENVIRON MIC, 1(2), 1999, pp. 145-157

Abstract

Denitrifying bacteria were enriched from freshwater sediment with added nitrate as electron acceptor and crude oil as the only source of organic substrates. The enrichment cultures were used as laboratory model systems for studying the degradative potential of denitrifying bacteria with respect to crude oil constituents, and the phylogenetic affiliation of denitrifiers that are selectively enriched with crude oil. The enrichment culture exhibited two distinct growth phases. During the first phase, bacteria grew homogeneously in the aqueous phase, while various C-1-C-3 alkylbenzenes, but no alkanes, were utilized from the crude oil. During the second phase, bacteria also grew that formed aggregates, adhered to the crude oil layer and emulsified the oil, while utilization of n-alkanes (C-5 to C-12) from the crude oil was observed, During growth, several alkylbenzoates accumulated in the aqueous phase, which were presumably formed from alkylbenzenes. Application of a newly designed, fluorescently labelled 16S rRNA-targeted oligonucleotide probe specific for the Azoarcus/Thauera group within the P-subclass of Proteobacteria revealed that the majority of the enriched denitrifiers affiliated with this phylogenetic group.

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Documento generato il 28/09/20 alle ore 18:13:23