FN Archimer Export Format
PT J
TI Microbial community structure in hadal sediments: high similarity along trench axes and strong changes along redox gradients
BT 
AF Schauberger, Clemens
   Glud, Ronnie N.
   Hausmann, Bela
   Trouche, Blandine
   Maignien, Lois
   Poulain, Julie
   Wincker, Patrick
   ARNAUD-HAOND, Sophie
   Wenzhöfer, Frank
   Thamdrup, Bo
AS 1:1;2:1,2,3;3:4,5;4:6;5:6;6:7;7:7;8:8;9:9,10;10:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:PDG-RBE-MARBEC-LHM;9:;10:;
C1 Hadal & Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark
   Department of Ocean and Environmental Sciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
   Danish Institute of Advanced Study (DIAS), University of Southern Denmark, Odense, Denmark
   Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria
   Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
   Univ Brest, CNRS, IFREMER, Microbiology of Extreme Environments Laboratory, Plouzané, France
   Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
   MARBEC, Institut Français de Recherche pour L’Exploitation de la Mer, Univ Montpellier, CNRS, IRD, Sète, France
   Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany
   Max Planck Institute for Marine Microbiology and Ecology, Bremen, Germany
C2 UNIV SOUTHERN DENMARK, DENMARK
   UNIV TOKYO, JAPAN
   UNIV SOUTHERN DENMARK, DENMARK
   UNIV VIENNA, AUSTRIA
   UNIV VIENNA, AUSTRIA
   UBO, FRANCE
   UNIV PARIS SACLAY, FRANCE
   IFREMER, FRANCE
   INST A WEGENER, GERMANY
   MAX PLANCK INST, GERMANY
SI BREST
   SETE
SE PDG-REM-EEP-LMEE
   PDG-RBE-MARBEC-LHM
UM BEEP-LM2E
   MARBEC
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
IF 11.217
TC 25
UR https://archimer.ifremer.fr/doc/00699/81144/85348.pdf
   https://archimer.ifremer.fr/doc/00699/81144/85349.pdf
LA English
DT Article
AB Hadal trench sediments are hotspots of biogeochemical activity in the deep sea, but the biogeochemical and ecological factors that shape benthic hadal microbial communities remain unknown. Here, we sampled ten hadal sites from two trench regions with a vertical resolution of down to 1 cm. We sequenced 16S rRNA gene amplicons using universal and archaea-specific primer sets and compared the results to biogeochemical parameters. Despite bathymetric and depositional heterogeneity we found a high similarity of microbial communities within each of the two trench axes, while composition at the phylum level varied strongly with sediment depth in conjunction with the redox stratification into oxic, nitrogenous, and ferruginous zones. As a result, communities of a given sediment horizon were more similar to each other across a distance of hundreds of kilometers within each trench, than to those of adjacent horizons from the same sites separated only by centimeters. Total organic carbon content statistically only explained a small part of the variation within and between trenches, and did not explain the community differences observed between the hadal and adjacent shallower sites. Anaerobic taxa increased in abundance at the top of the ferruginous zone, seeded by organisms deposited at the sediment surface and surviving burial through the upper redox zones. While an influence of other potential factors such as geographic isolation, hydrostatic pressure, and non-steady state depositional regimes could not be discerned, redox stratification and diagenesis appear to be the main selective forces that structure community composition in hadal sediments. 
PY 2021
PD DEC
SO Isme Journal
SN 1751-7362
PU Springer Science and Business Media LLC
VL 15
IS 12
UT 000658989500001
BP 3455
EP 3467
DI 10.1038/s41396-021-01021-w
ID 81144
ER

EF