Phospholipid furan fatty acids and ubiquinone-8: Lipid biomarkers that may protect Dehalococcoides strains from free radicals

Article Abstract:

The phospholipid fatty acid (PLFA) patterns and the neutral lipid quinones of pure and mixed cultures of Dehalococcoides are characterized. The difference in ubiquinones-8 (UQ-8) and naphthoquinone isoprenologues (MK-5) patterns strongly indicates a special function for UQ in Dehalococcoides, and Dehalococcoides might utilize structural modifications in its lipid armamentarium to protect against free radicals that are generated in the process of dechlorination.

United States, Lipids, Quinone, Quinones, Microbiological chemistry, Biological markers

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Detection and quantification of Geobacter lovleyi strain SZ: implications for bioremediation at tetrachloroethene- and uranium-impacted sites

Article Abstract:

The specific and quantitative 16S rRNA gene-based approaches are designed for assessing the environmental distribution and abundance of Geobacter lovleyi strain SZ-like Geobacter spp. in uranium- and chlorinated ethene-contaminated sites and also bioremediation-monitoring efforts. The findings have shown that the Geobacter lovleyi strain SZ-specific tools are useful for monitoring bioremediation efforts at uranium- and/or chlorinated solvent-impacted sites.

Industrial Organic Chemicals, Physiological aspects, Genetic aspects, Bioremediation, Vinyl chloride, Iron bacteria, Metal-reducing bacteria

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Changes in microbial community composition and geochemistry during uranium and technetium bioimmobilization

Article Abstract:

The effects of a combined signature lipid and nucleic acid-based microbial community characterization in sediments gathered from along the ethanol-stimulated and control column flow paths are presented.

Biological Product (except Diagnostic) Manufacturing, Drugs, Nucleic Acids, Analysis, Geochemistry

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