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Kranzioch, I.* ; Stoll, C.* ; Holbach, A.* ; Chen, H.* ; Wang, L.* ; Zheng, B.* ; Norra, S.* ; Bi, Y.* ; Schramm, K.-W. ; Tiehm, A.*

Dechlorination and organohalide-respiring bacteria dynamics in sediment samples of the Yangtze Three Gorges Reservoir.

Environ. Sci. Pollut. Res. 20, 7046-7056 (2013)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Several groups of bacteria such as Dehalococcoides spp., Dehalobacter spp., Desulfomonile spp., Desulfuromonas spp., or Desulfitobacterium spp. are able to dehalogenate chlorinated pollutants such as chloroethenes, chlorobenzenes, or polychlorinated biphenyls under anaerobic conditions. In order to assess the dechlorination potential in Yangtze sediment samples, the presence and activity of the reductively dechlorinating bacteria were studied in anaerobic batch tests. Eighteen sediment samples were taken in the Three Gorges Reservoir catchment area of the Yangtze River, including the tributaries Jialing River, Daning River, and Xiangxi River. Polymerase chain reaction analysis indicated the presence of dechlorinating bacteria in most samples, with varying dechlorinating microbial community compositions at different sampling locations. Subsequently, anaerobic reductive dechlorination of tetrachloroethene (PCE) was tested after the addition of electron donors. Most cultures dechlorinated PCE completely to ethene via cis-dichloroethene (cis-DCE) or trans-dichloroethene. Dehalogenating activity corresponded to increasing numbers of Dehalobacter spp., Desulfomonile spp., Desulfitobacterium spp., or Dehalococcoides spp. If no bacteria of the genus Dehalococcoides spp. were present in the sediment, reductive dechlorination stopped at cis-DCE. Our results demonstrate the presence of viable dechlorinating bacteria in Yangtze samples, indicating their relevance for pollutant turnover.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Yangtze; Tetrachloroethene; Reductive dechlorination; Desulfitobacterium spp.; Dehalococcoides spp.; qPCR; Chloroethene-contaminated Sites ; Carbon-isotope Fractionation ; Reductive Dechlorination ; Vinyl-chloride ; Polychlorinated-biphenyls ; Dehalococcoides Spp. ; Enrichment Culture ; Tetrachloroethene ; Biodegradation ; Growth
Sprache englisch
Veröffentlichungsjahr 2013
HGF-Berichtsjahr 2013
ISSN (print) / ISBN 0944-1344
e-ISSN 1614-7499
Zeitschrift Environmental Science and Pollution Research
Quellenangaben Band: 20, Heft: 10, Seiten: 7046-7056 Artikelnummer: , Supplement: ,
Verlag Springer
Begutachtungsstatus Peer reviewed
Institut(e) PPM-MEX-Molecular EXposomics (MEX)
POF Topic(s) 30202 - Environmental Health
Forschungsfeld(er) Environmental Sciences
PSP-Element(e) G-509100-001
PubMed ID 23423867
DOI 10.1007/s11356-013-1545-9
WOS ID WOS:000324815100032
Scopus ID 84884702927
Erfassungsdatum 2013-07-31
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