FN Archimer Export Format
PT J
TI Microbial communities associated with benthic faunal assemblages at cold seep sediments of the Sonora Margin, Guaymas Basin
BT 
AF Cruaud, Perrine
   Vigneron, Adrien
   Pignet, Patricia
   Caprais, Jean-Claude
   Lesongeur, Francoise
   Toffin, Laurent
   Godfroy, Anne
   Cambon-Bonavita, Marie-Anne
AS 1:1,2,3;2:1,2,3;3:1;4:4;5:1,2,3;6:1,2,3;7:1,2,3;8:1,2,3;
FF 1:PDG-REM-EEP-LMEE;2:PDG-REM-EEP-LMEE;3:PDG-REM-EEP-LMEE;4:PDG-REM-EEP-LEP;5:PDG-REM-EEP-LMEE;6:PDG-REM-EEP-LMEE;7:PDG-REM-EEP-LMEE;8:PDG-REM-EEP-LMEE;
C1 IFREMER, UMR6197, Laboratoire de Microbiologie des Environnements Extrêmes,Technopôle Brest Iroise, Plouzané, France
   Université de Bretagne Occidentale, UMR6197, Laboratoire de Microbiologie des Environnements Extrêmes,Plouzané, France
   Centre National de la Recherche Scientifique, UMR6197, Laboratoire de Microbiologie des Environnements Extrêmes, Technopôle Brest Iroise, Plouzané, France
   IFREMER, Laboratoire ≪ Environnements Profonds ≫,EEP-LEP, Technopôle Brest Iroise, Plouzané, France
C2 IFREMER, FRANCE
   UBO, FRANCE
   CNRS, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-REM-EEP-LMEE
   PDG-REM-EEP-LEP
UM BEEP-LM2E
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-univ-france
IF 5.247
TC 12
UR https://archimer.ifremer.fr/doc/00288/39889/38434.pdf
LA English
DT Article
CR BIG
BO L'Atalante
DE ;microbial communities;pyrosequencing;MBG-D;ANME;faunal assemblages;Vesicomyidae;Siboglinidae;microbial mat
AB The Sonora Margin cold seeps present a seafloor mosaic pattern consisting of different faunal assemblages and microbial mats. To better understand if sedimentary microbial communities reflect this patchy distribution, all major habitats were investigated using four complementary approaches: 16S rRNA gene sequence 454 pyrosequencing, quantitative polymerase chain reaction, fluorescence in situ hybridization and geochemistry analyses. This study reveals that sediments populated by different surface assemblages show distinct porewater geochemistry features and are associated with distinct microbial communities. In the sediments underlying the microbial mat and the surrounding macrofauna, microbial communities were dominated by anaerobic methane oxidizers (archaeal anaerobic methanotroph ANME) and sulfate-reducing Deltaproteobacteria. In contrast, sediment-associated microbial communities underlying the megafauna habitats (vesicomyids and siboglinids) were characterized by a lower biomass and important proportions of the Marine Benthic Group D (MBG-D), Chloroflexi as well as filamentous Gammaproteobacteria and Deltaproteobacteria. Together, geochemical and microbial surveys indicate that porewater methane concentrations play an important role in the microbial community structure and subsequently in the establishment of the surface colonizers. Furthermore, presence and activity of the surface colonizers influence the underlying microbial communities probably because of modification of energy source availabilities.
PY 2015
SO Frontiers In Marine Science
SN 2296-7745
PU Frontiers Media SA
VL 2
IS 53
UT 000485324300054
BP 1
EP 16
DI 10.3389/fmars.2015.00053
ID 39889
ER

EF