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43. Ide S, Miyazaki T, Maki H, Kobayashi T: Abundance of ribosomal RNA gene copies maintains genome integrity. Science 2010,327(5966):693–696.PubMedCrossRef IWR-1 nmr Competing interests The authors have declared that no competing interests exist. Authors’ contributions CML contributed to the overall study design, the acquisition, analysis, and interpretation of data, and drafting the manuscript, SK participated in the this website bioinformatics analysis and assay design, AGA contributed to the analysis and interpretation of data; MGD and MA both contributed to the bioinformatics portion of the analysis, PRH, YTH, JDB, LJL, and CAG contributed to the acquisition

and interpretation of laboratory data, PK conceived of the study and contributed to the overall study design, LBP contributed to the overall study design. All authors read and approved the final manuscript.”
“Background Sulfide accumulation in petroleum reservoirs is generally described as souring. Biogenic Org 27569 souring is usually due to the hydrogen sulfide that is produced by sulfate reducing bacteria (SRB), a diverse group of anaerobes that use sulfate as a final electron acceptor [1]. The souring process can be intensified when the petroleum reservoir is subjected to water flooding for secondary oil recovery [2]. Because seawater is often used in water flooding in offshore oil fields, sulfate amounts raise downhole and further stimulate SRB growth, resulting in increased risk of souring. The hydrogen sulfide can reach concentrations in the reservoir that may be toxic and/or explosive. Hence, a sulfate reducing bacteria control strategy is mandatory in the oil and gas industries. Biocorrosion is also a common process in reservoirs that are subjected to secondary oil recovery [2]. In order to avoid the risks associated with the injection of sea water, the water is pretreated before being injected. The treatment usually consists of deaeration and the addition of biocides.