Microorganisms persist at record depths in the subseafloor of the Canterbury Basin

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doi: 10.1038/ismej.2013.250
Author(s): Ciobanu, Maria-Cristina; Burgaud, Gaëtan; Dufresne, Alexis; Breuker, Anja; Rédou, Vanessa; Maamar, Sarah Ben; Gaboyer, Frédéric; Vandenkoornhuyse, Philippe; Barbier, Georges; Jebbar, Mohamed; Godfroy, Anne; Alain, Karine
Author Affiliation(s): Primary:
Université de Bretagne Occidentale, Laboratoire de Microbiologie des Environnements Extrêmes, Plouzane, France
CNRS, France
Ifremer, France
Université de Brest, France
Université de Rennes I, France
Bundesanstalt für Geowissenschaften und Rohstoffe, Germany
University of Bremen, Germany
Volume Title: ISME Journal
Source: The ISME Journal, 8(7), p.1370-1380. Publisher: Nature Publishing Group, London, United Kingdom. ISSN: 1751-7362
Note: In English. 42 refs.; illus.
Summary: The subsurface realm is colonized by microbial communities to depths of <1000 meters below the seafloor (m.b.sf.), but little is known about overall diversity and microbial distribution patterns at the most profound depths. Here we show that not only Bacteria and Archaea but also Eukarya occur at record depths in the subseafloor of the Canterbury Basin. Shifts in microbial community composition along a core of nearly 2?km reflect vertical taxa zonation influenced by sediment depth. Representatives of some microbial taxa were also cultivated using methods mimicking in situ conditions. These results suggest that diverse microorganisms persist down to 1922?m.b.sf. in the seafloor of the Canterbury Basin and extend the previously known depth limits of microbial evidence (i) from 159 to 1740 m.b.sf. for Eukarya and (ii) from 518 to 1922?m.b.sf. for Bacteria.
Year of Publication: 2013
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Archaea; Bacteria; Canterbury Basin; Depth; Distribution; Expedition 317; IODP Site U1352; Integrated Ocean Drilling Program; Marine environment; Marine sediments; Microorganisms; Nucleic acids; Pacific Ocean; RNA; Sediments; South Pacific; Southwest Pacific; West Pacific
Coordinates: S445615 S445615 E1720122 E1720122
Record ID: 2016083768
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.