Control of sulfidogenesis through bio-oxidation of H2S coupled to (per)chlorate reduction

Gregoire, Patrick, Engelbrektson, Anna, Hubbard, Christopher G., Metlagel, Zoltan, Csencsits, Roseann, Auer, Manfred, Conrad, Mark E., Thieme, Jürgen, Northrup, Paul and Coates, John D. 2014. Control of sulfidogenesis through bio-oxidation of H2S coupled to (per)chlorate reduction. Environmental Microbiology Reports 6 (6) , pp. 558-564. 10.1111/1758-2229.12156

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Abstract

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 Azospira suillum. 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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences
Publisher:	Wiley
ISSN:	1758-2229
Last Modified:	25 Feb 2019 13:44
URI:	https://orca.cardiff.ac.uk/id/eprint/97948

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