Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1093/femsec/fiv006
Titel (primär) Anaerobic naphthalene degradation by sulfate-reducing Desulfobacteraceae from various anoxic aquifers
Autor Kümmel, S.; Herbst, F.-A.; Bahr, A.; Duarte, M.; Pieper, D.H.; Jehmlich, N. ORCID logo ; Seifert, J.; von Bergen, M.; Bombach, P.; Richnow, H.H.; Vogt, C.
Journal / Serie FEMS Microbiology Ecology
Erscheinungsjahr 2015
Band/Volume 91
Heft 3
Seite von fiv006
Sprache englisch
Keywords N47; metaproteomics; illumina sequencing
UFZ Querschnittsthemen RU3;

Polycyclic aromatic hydrocarbons (PAH) are widespread and persistent environmental contaminants, especially in oxygen-free environments. The occurrence of anaerobic PAH-degrading bacteria and their underlying metabolic pathways are rarely known. In this study, PAH degraders were enriched in laboratory microcosms under sulfate-reducing conditions using groundwater and sediment samples from four PAH-contaminated aquifers. Five enrichment cultures were obtained showing sulfate-dependent naphthalene degradation. Mineralization of naphthalene was demonstrated by the formation of sulfide concomitant with the depletion of naphthalene and the development of 13C-labeled CO2 from [13C6]-naphthalene. 16S rRNA gene and metaproteome analyses revealed that organisms related to Desulfobacterium str. N47 were the main naphthalene degraders in four enrichment cultures. Protein sequences highly similar to enzymes of the naphthalene degradation pathway of N47 were identified, suggesting that naphthalene was activated by a carboxylase, and that the central metabolite 2-naphthoyl-CoA was further reduced by two reductases. The data indicate an importance of members of the family Desulfobacteraceae for naphthalene degradation under sulfate-reducing conditions in freshwater environments.

dauerhafte UFZ-Verlinkung
Kümmel, S., Herbst, F.-A., Bahr, A., Duarte, M., Pieper, D.H., Jehmlich, N., Seifert, J., von Bergen, M., Bombach, P., Richnow, H.H., Vogt, C. (2015):
Anaerobic naphthalene degradation by sulfate-reducing Desulfobacteraceae from various anoxic aquifers
FEMS Microbiol. Ecol. 91 (3), fiv006