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Biogenic Mn-Oxides in Subseafloor Basalts

The deep biosphere of the subseafloor basalts is recognized as a major scientific frontier in disciplines like biology, geology, and oceanography. Recently, the presence of fungi in these environments has involved a change of view regarding diversity and ecology. Here, we describe fossilized fungal...

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Autores principales: Ivarsson, Magnus, Broman, Curt, Gustafsson, Håkan, Holm, Nils G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4479566/
https://www.ncbi.nlm.nih.gov/pubmed/26107948
http://dx.doi.org/10.1371/journal.pone.0128863
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author Ivarsson, Magnus
Broman, Curt
Gustafsson, Håkan
Holm, Nils G.
author_facet Ivarsson, Magnus
Broman, Curt
Gustafsson, Håkan
Holm, Nils G.
author_sort Ivarsson, Magnus
collection PubMed
description The deep biosphere of the subseafloor basalts is recognized as a major scientific frontier in disciplines like biology, geology, and oceanography. Recently, the presence of fungi in these environments has involved a change of view regarding diversity and ecology. Here, we describe fossilized fungal communities in vugs in subseafloor basalts from a depth of 936.65 metres below seafloor at the Detroit Seamount, Pacific Ocean. These fungal communities are closely associated with botryoidal Mn oxides composed of todorokite. Analyses of the Mn oxides by Electron Paramagnetic Resonance spectroscopy (EPR) indicate a biogenic signature. We suggest, based on mineralogical, morphological and EPR data, a biological origin of the botryoidal Mn oxides. Our results show that fungi are involved in Mn cycling at great depths in the seafloor and we introduce EPR as a means to easily identify biogenic Mn oxides in these environments.
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spelling pubmed-44795662015-06-29 Biogenic Mn-Oxides in Subseafloor Basalts Ivarsson, Magnus Broman, Curt Gustafsson, Håkan Holm, Nils G. PLoS One Research Article The deep biosphere of the subseafloor basalts is recognized as a major scientific frontier in disciplines like biology, geology, and oceanography. Recently, the presence of fungi in these environments has involved a change of view regarding diversity and ecology. Here, we describe fossilized fungal communities in vugs in subseafloor basalts from a depth of 936.65 metres below seafloor at the Detroit Seamount, Pacific Ocean. These fungal communities are closely associated with botryoidal Mn oxides composed of todorokite. Analyses of the Mn oxides by Electron Paramagnetic Resonance spectroscopy (EPR) indicate a biogenic signature. We suggest, based on mineralogical, morphological and EPR data, a biological origin of the botryoidal Mn oxides. Our results show that fungi are involved in Mn cycling at great depths in the seafloor and we introduce EPR as a means to easily identify biogenic Mn oxides in these environments. Public Library of Science 2015-06-24 /pmc/articles/PMC4479566/ /pubmed/26107948 http://dx.doi.org/10.1371/journal.pone.0128863 Text en © 2015 Ivarsson et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Ivarsson, Magnus
Broman, Curt
Gustafsson, Håkan
Holm, Nils G.
Biogenic Mn-Oxides in Subseafloor Basalts
title Biogenic Mn-Oxides in Subseafloor Basalts
title_full Biogenic Mn-Oxides in Subseafloor Basalts
title_fullStr Biogenic Mn-Oxides in Subseafloor Basalts
title_full_unstemmed Biogenic Mn-Oxides in Subseafloor Basalts
title_short Biogenic Mn-Oxides in Subseafloor Basalts
title_sort biogenic mn-oxides in subseafloor basalts
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4479566/
https://www.ncbi.nlm.nih.gov/pubmed/26107948
http://dx.doi.org/10.1371/journal.pone.0128863
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