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  4. Ecophysiology and genomics of key sulfate-reducing bacteria involved in anaerobic hydrocarbon degradation at marine gas and oil seeps
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-00105127-15

Ecophysiology and genomics of key sulfate-reducing bacteria involved in anaerobic hydrocarbon degradation at marine gas and oil seeps

Veröffentlichungsdatum
2015-12-08
Autoren
Stagars, Marion Helen  
Betreuer
Knittel, Katrin  
Gutachter
Musat, Florin  
Zusammenfassung
The diversity, function and community structure of anaerobic hydrocarbon-degrading microorganisms in marine environments were elucidated by methods in molecular ecology, microbiology and microbial genomics. A high diversity of n-alkane degraders was revealed in globally distributed marine seep sediments based on genes encoding (1-methylalkyl)succinate synthase (MasD), the functional marker for anaerobic n-alkane degradation. Both abundant cosmopolitan and specialized variants of MasD were detected as well as novel lineages of n-alkane degraders. It could be shown that the community structure is clearly driven by the available hydrocarbon substrate. Further, the response of the microbial community in Caspian Sea sediments to simulated crude oil seepage using a Sediment-Oil-Flow-Through system was investigated. Sulfate reduction and methanogenesis were important processes in the anaerobic degradation of hydrocarbons during crude oil seepage in these sediments. After oil-flow-through, several groups of SRB exhibited an increase in cell numbers and are likely responsible for the observed decrease in aliphatic hydrocarbon concentration.
Schlagwörter
anaerobic hydrocarbon degradation

; 

marine seep sediments

; 

microbial diversity

; 

alkyl succinate synthase

; 

geneFISH

; 

single cell genomics
Institution
Universität Bremen  
Fachbereich
Fachbereich 02: Biologie/Chemie (FB 02)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00105127-1.pdf

Size

31.68 MB

Format

Adobe PDF

Checksum

(MD5):822b46fe2809bb044e806dd0b86eebc3

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