Anaerobic oxidation of short-chain and cyclic alkanes by sulfate-reducing bacteria
|Other Titles:||Anaerober Abbau von kurzkettigen und zyklischen Alkanen durch Sulfat-reduzierende Bakterien||Authors:||Jaekel, Ulrike||Supervisor:||Florin Musat||1. Expert:||Widdel, Friedrich||2. Expert:||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||URN:||urn:nbn:de:gbv:46-00102302-11||Institution:||Universität Bremen||Faculty:||FB2 Biologie/Chemie|
|Appears in Collections:||Dissertationen|
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