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Biogenic Mn-Oxides in Subseafloor Basalts
Swedish Museum Nat Hist, Sweden; Swedish Museum Nat Hist, Sweden.
Stockholm University, Sweden.
Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Diagnostics, Department of Biomedical Engineering.
Stockholm University, Sweden.
2015 (English)In: PLoS ONE, ISSN 1932-6203, Vol. 10, no 6, e0128863- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Public Library of Science , 2015. Vol. 10, no 6, e0128863- p.
National Category
Clinical Medicine
URN: urn:nbn:se:liu:diva-120354DOI: 10.1371/journal.pone.0128863ISI: 000356932500031PubMedID: 26107948OAI: diva2:843871

Funding Agencies|Swedish Research Council [2012-4364]; Danish National Research Foundation [DNRF53]

Available from: 2015-07-31 Created: 2015-07-31 Last updated: 2015-09-02

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