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Title: In-situ detection of microbial life in the deep biosphere in igneous ocean crust
Authors: Salas, E. C.
Bhartia, R.
Anderson, Louise
Hug, W. F.
Reid, R. D.
Iturrino, G.
Edwards, K. J.
First Published: 12-Nov-2015
Publisher: Frontiers Media
Citation: Frontiers in Microbiology, 2015 6:1260.
Abstract: The deep biosphere is a major frontier to science. Recent studies have shown the presence and activity of cells in deep marine sediments and in the continental deep biosphere. Volcanic lavas in the deep ocean subsurface, through which substantial fluid flow occurs, present another potentially massive deep biosphere. We present results from the deployment of a novel in-situ logging tool designed to detect microbial life harbored in a deep, native, borehole environment within igneous oceanic crust, using deep ultraviolet native fluorescence spectroscopy. Results demonstrate the predominance of microbial-like signatures within the borehole environment, with densities in the range of 105 cells/mL. Based on transport and flux models, we estimate that such a concentration of microbial cells could not be supported by transport through the crust, suggesting in situ growth of these communities.
DOI Link: 10.3389/fmicb.2015.01260
ISSN: 1664-302X
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: © 2015 Salas, Bhartia, Anderson, Hug, Reid, Iturrino and Edwards. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Description: The Supplementary Material for this article can be found online at:
Appears in Collections:Published Articles, Dept. of Geology

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