Anaerobic oxidation of short-chain and cyclic alkanes by sulfate-reducing bacteria
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Other Titles: | Anaerober Abbau von kurzkettigen und zyklischen Alkanen durch Sulfat-reduzierende Bakterien | Authors: | Jaekel, Ulrike | Supervisor: | Musat, Florin ![]() |
1. Expert: | Widdel, Friedrich | Experts: | Richnow, Hans | Abstract: | Evidence from marine oil and gas seepages recently indicated that anaerobic biodegradation of non-methane hydrocarbons may be an important process influencing the cycling of carbon and sulfur. To date, only little is known about the microorganisms able to degrade C2 C4 n-alkanes and cycloalkanes under anaerobic conditions and the involved activation mechanisms. In this study, new propane and n-butane degrading, sulfate-reducing enrichment cultures were obtained from sediments of cold marine hydrocarbon seeps and further investigated with regard to the phylotypes involved in the anaerobic degradation of propane and n-butane, their physiology and the involved activation mechanisms. Furthermore, an extremely slow growing, sulfate-reducing and ethane degrading enrichment culture from a marine cold hydrocarbon seep was investigated with regard to phylogenetic composition. A sulfate-reducing, cyclohexane degrading enrichment culture was obtained from hydrocarbon contaminated intertidal sediment and investigated with regard to the dominant phylotype, the involved activation mechanism and the spectrum of degradable hydrocarbon substrates. |
Keywords: | Anaerobic degradation of hydrocarbons; short-chain alkanes; cycloalkanes; marine cold hydrocarbon seeps | Issue Date: | 18-Oct-2011 | Type: | Dissertation | Secondary publication: | no | URN: | urn:nbn:de:gbv:46-00102302-11 | Institution: | Universität Bremen | Faculty: | Fachbereich 02: Biologie/Chemie (FB 02) |
Appears in Collections: | Dissertationen |
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