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Titolo:
Anaerobic oxidation of o-xylene, m-xylene, and homologous alkylbenzenes bynew types of sulfate-reducing bacteria
Autore:
Harms, G; Zengler, K; Rabus, R; Aeckersberg, F; Minz, D; Rossello-Mora, R; Widdel, F;
Indirizzi:
Max Planck Inst Marine Mikrobiol, D-28359 Bremen, Germany Max Planck Inst Marine Mikrobiol Bremen Germany D-28359 Bremen, Germany
Titolo Testata:
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
fascicolo: 3, volume: 65, anno: 1999,
pagine: 999 - 1004
SICI:
0099-2240(199903)65:3<999:AOOOMA>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
DENITRIFYING BACTERIA; CRUDE-OIL; ENRICHMENT CULTURE; MOLECULAR-OXYGEN; TOLUENE; DEGRADATION; HYDROCARBONS; SEA; MINERALIZATION; ANALOGS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Widdel, F Max Planck Inst Marine Mikrobiol, Celsiusstr 1, D-28359 Bremen, Germany Max Planck Inst Marine Mikrobiol Celsiusstr 1 Bremen Germany D-28359
Citazione:
G. Harms et al., "Anaerobic oxidation of o-xylene, m-xylene, and homologous alkylbenzenes bynew types of sulfate-reducing bacteria", APPL ENVIR, 65(3), 1999, pp. 999-1004

Abstract

Various alkylbenzenes were depleted during growth of an anaerobic, sulfate-reducing enrichment culture with crude oil as the only source of organic substrates. From this culture, two new types of mesophilic, rod-shaped sulfate-reducing bacteria, strains oXyS1 and mXyS1, were isolated with o-xylene and m-xylene, respectively, as organic substrates. Sequence analyses of 16SrRNA genes revealed that the isolates affiliated with known completely oxidizing sulfate-reducing bacteria of the delta subclass of the class Proteobacteria. Strain oXyS1 showed the highest similarities to Desulfobacterium cetonicum and Desulfosarcina variabilis (similarity values, 98.4 and 98.7%, respectively). Strain mXyS1 was less closely related to known species, the closest relative being Desulfococcus multivorans (similarity value, 86.9%). Complete mineralization of o-xylene and m-xylene was demonstrated in quantitative growth experiments. Strain oXyS1 was able to utilize toluene, o-ethyltoluene, benzoate, and o-methylbenzoate in addition to o-xylene. Strain mXyS1 oxidized toluene, m-ethyltoluene, m-isoproyltoluene, benzoate, and m-methylbenzoate in addition to m-xylene. Strain oXyS1 did not utilize m-alkyltoluenes, whereas strain mXyS1 did not utilize o-alkyltoluenes. Like the enrichment culture, both isolates grew anaerobically on crude oil with concomitant reduction of sulfate to sulfide.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 11:27:52