BACKGROUND Archaea are important to the carbon and nitrogen cycles, but it remains uncertain how rising atmospheric carbon dioxide concentrations ([CO(2)]) will influence the structure and function of soil archaeal communities. METHODOLOGY/PRINCIPAL FINDINGS We measured abundances of archaeal and bacterial 16S rRNA and amoA genes, phylogenies of archaeal 16S rRNA and amoA genes, concentration...

Using vo1tammetric technique with a rotating disk electrode, the anodic oxidation of carbazole in aqueous H2S04 ethanol mixtures was shown to proceed under diffusion and electron transfer control conditions. Electro-oxidation involves one electron transfer; electrode passivation occurs due to the formation of a poorly soluble product. By means of the SCF MO LCAO INDO, AMI-UHF and PM3-UHF method...

This study demonstrates that the deltaproteobacterium Desulfurivibrio alkaliphilus can grow chemolithotrophically by coupling sulfide oxidation to the dissimilatory reduction of nitrate and nitrite to ammonium. Key genes of known sulfide oxidation pathways are absent from the genome of D. alkaliphilus Instead, the genome contains all of the genes necessary for sulfate reduction, including a gen...

H. Kleszczyńska3, M. Oświęcimskab, S. Witekb and S. Przestalskia a Department of Physics and Biophysics, Agricultural University, Norwida 25, 50-375 Wroclaw, Poland b Department of Chemistry, Technical University of Wroclaw, Wyb. Wyspiariskiego 27, 50-370 Wroclaw, Poland Z. Naturforsch. 53c, 425-430 (1998); received January 26/March 16, 1998 Antioxidants, Lipid Oxidation, Erythrocyte Ghost, Qua...

Ammonia monooxygenase (AMO) from Nitrosomonas europaea catalyzes the oxidation of ammonia to hydroxylamine and has been shown to oxidize a variety of halogenated and nonhalogenated hydrocarbons. As part of a program focused upon extending these observations to natural systems, a study was conducted to examine the influence of soil upon the cooxidative abilities of N. europaea. Small quantities ...