Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s10532-020-09922-x
Lizenz creative commons licence
Titel (primär) Anaerobic benzene mineralization by natural microbial communities from Niger Delta
Autor Eziuzor, S.C.; Schmidt, M.; Vogt, C.
Quelle Biodegradation
Erscheinungsjahr 2021
Department ISOBIO
Band/Volume 32
Heft 1
Seite von 37
Seite bis 52
Sprache englisch
Topic T7 Bioeconomy
Keywords Benzene; Niger delta; Anaerobic hydrocarbon degradation; Biodiversity; Iron reduction
UFZ Querschnittsthemen ProVIS;
Abstract The Niger Delta is one of the most damaged ecosystems in the world, mainly due to petroleum contamination by oil exploration accidents. We investigated the natural attenuation potential of Niger Delta subsurface sediment samples for anaerobic hydrocarbon degradation using benzene as a model compound under iron-reducing, sulfate-reducing, and methanogenic conditions. Benzene was slowly mineralized under methanogenic and iron-reducing conditions using nitrilotriacetic acid (NTA)-Fe(III), or poorly crystalline Fe(III) oxyhydroxides as electron acceptors, analyzed by measurement of 13CO2 produced from added 13C-labelled benzene. Highest mineralization rates were observed in microcosms amended with Fe(III) oxyhydroxides. The microbial communities of benzene-mineralizing enrichment cultures were characterized by next-generation sequencing of the genes coding for 16S rRNA and methyl coenzyme M reductase A (mcrA). Abundant phylotypes were affiliated to Betaproteobacteriales, Ignavibacteriales, Desulfuromonadales, and Methanosarcinales of the genera Methanosarcina and Methanothrix, illustrating that the enriched benzene-mineralizing communities were diverse and may contain more than a single benzene degrader. The diversity of the microbial communities was furthermore confirmed by scanning helium-ion microscopy which revealed the presence of various rod-shaped as well as filamentous microbial morphotypes.
dauerhafte UFZ-Verlinkung
Eziuzor, S.C., Schmidt, M., Vogt, C. (2021):
Anaerobic benzene mineralization by natural microbial communities from Niger Delta
Biodegradation 32 (1), 37 - 52 10.1007/s10532-020-09922-x