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Bo Barker Jørgensen

The biogeochemical sulfur cycle of marine sediments

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The biogeochemical sulfur cycle of marine sediments. / Jørgensen, Bo Barker; Findlay, Alyssa J.; Pellerin, André.

In: Frontiers in Microbiology, Vol. 10, 849, 04.2019.

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Jørgensen, Bo Barker ; Findlay, Alyssa J. ; Pellerin, André. / The biogeochemical sulfur cycle of marine sediments. In: Frontiers in Microbiology. 2019 ; Vol. 10.

Bibtex

@article{b7be17b0583543c783b84cfe7ef121bd,
title = "The biogeochemical sulfur cycle of marine sediments",
abstract = "Microbial dissimilatory sulfate reduction to sulfide is a predominant terminal pathway of organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the produced sulfide establishes a complex network of pathways in the sulfur cycle, leading to intermediate sulfur species and partly back to sulfate. The intermediates include elemental sulfur, polysulfides, thiosulfate, and sulfite, which are all substrates for further microbial oxidation, reduction or disproportionation. New microbiological discoveries, such as long-distance electron transfer through sulfide oxidizing cable bacteria, add to the complexity. Isotope exchange reactions play an important role for the stable isotope geochemistry and for the experimental study of sulfur transformations using radiotracers. Microbially catalyzed processes are partly reversible whereby the back-reaction affects our interpretation of radiotracer experiments and provides a mechanism for isotope fractionation. We here review the progress and current status in our understanding of the sulfur cycle in the seabed with respect to its microbial ecology, biogeochemistry, and isotope geochemistry.",
keywords = "Stable isotopes, Sulfate reducing bacteria, Sulfate reduction, Sulfide oxidation, Sulfide oxidizing bacteria, Sulfur disproportionation, Sulfur isotope fractionation",
author = "J{\o}rgensen, {Bo Barker} and Findlay, {Alyssa J.} and Andr{\'e} Pellerin",
year = "2019",
month = apr,
doi = "10.3389/fmicb.2019.00849",
language = "English",
volume = "10",
journal = "Frontiers in Microbiology",
issn = "1664-302X",
publisher = "Frontiers Media S.A",

}

RIS

TY - JOUR

T1 - The biogeochemical sulfur cycle of marine sediments

AU - Jørgensen, Bo Barker

AU - Findlay, Alyssa J.

AU - Pellerin, André

PY - 2019/4

Y1 - 2019/4

N2 - Microbial dissimilatory sulfate reduction to sulfide is a predominant terminal pathway of organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the produced sulfide establishes a complex network of pathways in the sulfur cycle, leading to intermediate sulfur species and partly back to sulfate. The intermediates include elemental sulfur, polysulfides, thiosulfate, and sulfite, which are all substrates for further microbial oxidation, reduction or disproportionation. New microbiological discoveries, such as long-distance electron transfer through sulfide oxidizing cable bacteria, add to the complexity. Isotope exchange reactions play an important role for the stable isotope geochemistry and for the experimental study of sulfur transformations using radiotracers. Microbially catalyzed processes are partly reversible whereby the back-reaction affects our interpretation of radiotracer experiments and provides a mechanism for isotope fractionation. We here review the progress and current status in our understanding of the sulfur cycle in the seabed with respect to its microbial ecology, biogeochemistry, and isotope geochemistry.

AB - Microbial dissimilatory sulfate reduction to sulfide is a predominant terminal pathway of organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the produced sulfide establishes a complex network of pathways in the sulfur cycle, leading to intermediate sulfur species and partly back to sulfate. The intermediates include elemental sulfur, polysulfides, thiosulfate, and sulfite, which are all substrates for further microbial oxidation, reduction or disproportionation. New microbiological discoveries, such as long-distance electron transfer through sulfide oxidizing cable bacteria, add to the complexity. Isotope exchange reactions play an important role for the stable isotope geochemistry and for the experimental study of sulfur transformations using radiotracers. Microbially catalyzed processes are partly reversible whereby the back-reaction affects our interpretation of radiotracer experiments and provides a mechanism for isotope fractionation. We here review the progress and current status in our understanding of the sulfur cycle in the seabed with respect to its microbial ecology, biogeochemistry, and isotope geochemistry.

KW - Stable isotopes

KW - Sulfate reducing bacteria

KW - Sulfate reduction

KW - Sulfide oxidation

KW - Sulfide oxidizing bacteria

KW - Sulfur disproportionation

KW - Sulfur isotope fractionation

UR - http://www.scopus.com/inward/record.url?scp=85068150914&partnerID=8YFLogxK

U2 - 10.3389/fmicb.2019.00849

DO - 10.3389/fmicb.2019.00849

M3 - Journal article

C2 - 31105660

AN - SCOPUS:85068150914

VL - 10

JO - Frontiers in Microbiology

JF - Frontiers in Microbiology

SN - 1664-302X

M1 - 849

ER -