FN Archimer Export Format
PT J
TI Extending the sub-sea-floor biosphere
BT 
AF ROUSSEL, Erwan
   CAMBON-BONAVITA, Marie-Anne
   QUERELLOU, Joel
   CRAGG, B
   WEBSTER, G
   PRIEUR, D
   PARKES, R
AS 1:2,3;2:2,3;3:2,3;4:1;5:1;6:2;7:1;
FF 1:PDG-DOP-DCB-EEP-LMEE;2:PDG-DOP-DCB-EEP-LMEE;3:PDG-DOP-DCB-EEP-LMEE;4:;5:;6:;7:;
C1 Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3YE, Wales.
   Univ Bretagne Occidentale, IFREMER, Ctr Brest, Lab Microbiol Environn Extremes,UMR 6197, F-29280 Plouzane, France.
C2 UNIV CARDIFF, UK
   UBO, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-DOP-DCB-EEP-LMEE
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 28.103
TC 136
UR https://archimer.ifremer.fr/doc/2008/publication-4209.pdf
LA English
DT Article
AB Sub-sea-floor sediments may contain two-thirds of Earth's total prokaryotic biomass. However, this has its basis in data extrapolation from ~500-meter to 4-kilometer depths, whereas the deepest documented prokaryotes are from only 842 meters. Here, we provide evidence for low concentrations of living prokaryotic cells in the deepest (1626 meters below the sea floor), oldest (111 million years old), and potentially hottest (~100°C) marine sediments investigated. These Newfoundland margin sediments also have DNA sequences related to thermophilic and/or hyperthermophilic Archaea. These form two unique clusters within Pyrococcus and Thermococcus genera, suggesting unknown, uncultured groups are present in deep, hot, marine sediments (~54° to 100°C). Sequences of anaerobic methane-oxidizing Archaea were also present, suggesting a deep biosphere partly supported by methane. These findings demonstrate that the sub-sea-floor biosphere extends to at least 1600 meters below the sea floor and probably deeper, given an upper temperature limit for prokaryotic life of at least 113°C and increasing thermogenic energy supply with depth.
PY 2008
PD MAY
SO Science
SN 0036-8075
PU American Association for the Advancement of Science
VL 320
IS 5879
UT 000256059800036
DI 10.1126/science.1154545
ID 4209
ER

EF