Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1021/acs.est.5b01401
Title (Primary) Reductive dehalogenation of oligocyclic phenolic bromoaromatics by Dehalococcoides mccartyi strain CBDB1
Author Yang, C.; Kublik, A.; Weidauer, C.; Seiwert, B.; Adrian, L.
Source Titel Environmental Science & Technology
Year 2015
Department ISOBIO; ANA
Volume 49
Issue 14
Page From 8497–
Page To 8505
Language englisch
UFZ wide themes ProVIS; RU3;
Abstract Dehalococcoides mccartyi strains transform many halogenated compounds and are used for bioremediation. Such anaerobic transformations were intensively studied with chlorinated and simply structured compounds such as chlorinated benzenes, ethenes, and ethanes. However, many halogenated oligocyclic aromatic compounds occur in nature as either naturally produced materials or as part of commercial products such as pharmaceuticals, pesticides, or flame retardants. Here, we demonstrate that the D. mccartyi strain CBDB1 reductively debrominated two oligocyclic aromatic phenolic compounds, tetrabromobisphenol A (TBBPA) and bromophenol blue (BPB). The strain CBDB1 completely converted TBBPA to bisphenol A and BPB to phenol red with a stepwise removal of all bromide substituents. Debromination (but no cell growth) was detected in the cultures cultivated with TBBPA. In contrast, strain CBDB1 grew when interacting with BPB, demonstrating that this substrate was used as an electron acceptor for organobromine respiration. High doses of BPB delayed debromination and inhibited growth in the early cultivation phase. A higher toxicity of TBBPA compared with that of BPB might be due to the higher lipophilicity of TBBPA. Mass spectrometric analyses of whole-cell extracts demonstrated that two proteins encoded by the reductive dehalogenase homologous genes CbdbA1092 and CbdbA1503 were specifically induced by the used oligocyclic compounds, whereas others (e.g., CbdbA84 (CbrA)) were downregulated
Persistent UFZ Identifier
Yang, C., Kublik, A., Weidauer, C., Seiwert, B., Adrian, L. (2015):
Reductive dehalogenation of oligocyclic phenolic bromoaromatics by Dehalococcoides mccartyi strain CBDB1
Environ. Sci. Technol. 49 (14), 8497– - 8505 10.1021/acs.est.5b01401