Control of sulfidogenesis through bio‐oxidation of H2S coupled to (per)chlorate reduction. Issue 6 (4th April 2014)

• Record Type: Journal Article
• Authors: Gregoire, Patrick; Engelbrektson, Anna; Hubbard, Christopher G.; Metlagel, Zoltan; Csencsits, Roseann; Auer, Manfred; Conrad, Mark E.; Thieme, Jürgen; Northrup, Paul; Coates, John D.
• Is Part Of: Environmental microbiology reports. Volume 6:Issue 6(2014)
• Page Start: 558
• Page End: 564
• Publication Date: 2014-04-04
• Subjects: Microbial ecology -- Periodicals; Environmental Microbiology -- Periodicals; Electronic journals; 579.17
• DOI: 10.1111/1758-2229.12156
• Languages: English
• ISSNs: 1758-2229

Abstract

<abstract abstract-type="main"> <title>Summary</title> <p>We investigated H₂S attenuation by dissimilatory perchlorate‐reducing bacteria (DPRB). All DPRB tested oxidized H₂S coupled to (per)chlorate reduction without sustaining growth. H₂S was preferentially utilized over organic electron donors resulting in an enriched (³⁴S)‐elemental sulfur product. Electron microscopy revealed elemental sulfur production in the cytoplasm and on the cell surface of the DPRB <italic>A</italic><italic>zospira suillum</italic>. Based on our results, we propose a novel hybrid enzymatic‐abiotic mechanism for H₂S oxidation similar to that recently proposed for nitrate‐dependent Fe(II) oxidation. The results of this study have implications for the control of biosouring and biocorrosion in a range of industrial environments.</p> </abstract>