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Titolo:
Isolation and characterization of Desulfitobacterium sp strain Y51 capableof efficient dehalogenation of tetrachloroethene and polychloroethanes
Autore:
Suyama, A; Iwakiri, R; Kai, K; Tokunaga, T; Sera, N; Furukawa, K;
Indirizzi:
Kyushu Univ, Fac Agr, Dept Biosci & Biotechnol, Higashi Ku, Fukuoka 8128581, Japan Kyushu Univ Fukuoka Japan 8128581 ol, Higashi Ku, Fukuoka 8128581, Japan Towa Kagaku Co Ltd, Naka Ku, Hiroshima 7300841, Japan Towa Kagaku Co Ltd Hiroshima Japan 7300841 Ku, Hiroshima 7300841, Japan Fukuoka Inst Hlth & Environm Sci, Fukuoka 8180135, Japan Fukuoka Inst Hlth& Environm Sci Fukuoka Japan 8180135 ka 8180135, Japan
Titolo Testata:
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
fascicolo: 7, volume: 65, anno: 2001,
pagine: 1474 - 1481
SICI:
0916-8451(200107)65:7<1474:IACODS>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRICTLY ANAEROBIC BACTERIUM; DESULFOMONILE-TIEDJEI DCB-1; REDUCTIVE DECHLORINATION; SP-NOV; DEHALOSPIRILLUM MULTIVORANS; DEHALOBACTER-RESTRICTUS; METHANOGENIC CONDITIONS; GEN-NOV; ESCHERICHIA-COLI; PCE-S;
Keywords:
Desulfitobacterium sp.; tetrachloroethene (PCE); polychloroethanes; reductive dehalogenation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Furukawa, K Kyushu Univ, Fac Agr, Dept Biosci & Biotechnol, Higashi Ku, Hakozaki 6-10-1, Fukuoka 8128581, Japan Kyushu Univ Hakozaki 6-10-1 Fukuoka Japan 8128581 8581, Japan
Citazione:
A. Suyama et al., "Isolation and characterization of Desulfitobacterium sp strain Y51 capableof efficient dehalogenation of tetrachloroethene and polychloroethanes", BIOS BIOT B, 65(7), 2001, pp. 1474-1481

Abstract

A strict anaerobic bacterium, strain Y51, was isolated from soil contaminated with tetrachloroethene (PCE). Strain Y51 is capable of very efficientlydehalogenating PCE via trichloroethene (TCE) to cis-1,2-dichloroethene (cis-1,2-DCE) at concentrations as high as 960 mum and as low as 0.6 mum. Strain Y51 was Gram-negative, motile with some lateral flagella, and curved rod-shaped. On the basis of the 16S rDNA sequence, the organism was identifiedto be a species within the genus Desulfitobacterium. Strain Y51 also had dehalogenation activities toward polychloroethanes such as hexa-, penta-, and tetrachloroethanes, from which dichloroethenes were produced as the finalproducts. The cell extracts mediated the dehalogenation of PCE with reduced methyl viologen as an electron carrier at the specific rate of 5.0 nmol .min(-1) . mg cell protein(-1) (pH 7.2, 37 degreesC). Dehalogenation was highly susceptible to air oxidation, and to potential alternative electron acceptors such as nitrite or sulfite.

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Documento generato il 17/01/21 alle ore 18:17:04