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Biogenic Mn-Oxides in Subseafloor Basalts
Stockholm University, Faculty of Science, Department of Geological Sciences.
Stockholm University, Faculty of Science, Department of Geological Sciences.
Number of Authors: 4
2015 (English)In: PLoS ONE, ISSN 1932-6203, Vol. 10, no 6, e0128863Article 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
2015. Vol. 10, no 6, e0128863
National Category
Biological Sciences Earth and Related Environmental Sciences
URN: urn:nbn:se:su:diva-119240DOI: 10.1371/journal.pone.0128863ISI: 000356932500031OAI: diva2:846193
Available from: 2015-08-14 Created: 2015-08-03 Last updated: 2015-08-14Bibliographically approved

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Broman, CurtHolm, Nils G.
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