FN Archimer Export Format
PT J
TI Mats of psychrophilic thiotrophic bacteria associated with cold seeps of the Barents Sea
BT 
AF GRUENKE, S.
   LICHTSCHLAG, A.
   DE BEER, D.
   FELDEN, J.
   SALMAN, V.
   RAMETTE, A.
   SCHULZ-VOGT, H. N.
   BOETIUS, A.
AS 1:1,2;2:2;3:2;4:1;5:2;6:1;7:2;8:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Alfred Wegener Inst Polar & Marine Res, HGF MPG Joint Res Grp Deep Sea Ecol & Technol, Bremerhaven, Germany.
   Max Planck Inst Marine Microbiol, Bremen, Germany.
C2 INST A WEGENER, GERMANY
   MAX PLANCK INST, GERMANY
IN DOAJ
IF 3.75
TC 29
UR https://archimer.ifremer.fr/doc/00212/32360/30823.pdf
   https://archimer.ifremer.fr/doc/00212/32360/30824.pdf
LA English
DT Article
CR VICKING
BO Unknown
DE ;mosby mud volcano;gulf of mexico;eastern mediterranean sea;filamentous sulfur bacteria;sulfide oxidizing bacteria;in situ hybridization;sulfate reduction;microbial communities;marine sediments;beggiatoa spp
AB This study investigated the bacterial diversity associated with microbial mats of polar deep-sea cold seeps. The mats were associated with high upward fluxes of sulfide produced by anaerobic oxidation of methane, and grew at temperatures close to the freezing point of seawater. They ranged from small patches of 0.2-5 m in diameter (gray mats) to extensive fields covering up to 850 m(2) of seafloor (white mats) and were formed by diverse sulfide-oxidizing bacteria differing in color and size. Overall, both the dominant mat-forming thiotrophs as well as the associated bacterial communities inhabiting the mats differed in composition for each mat type as determined by microscopy, 16S rRNA gene sequencing and automated ribosomal intergenic spacer analysis. While the smaller gray mats were associated with a highly diverse composition of sulfide oxidizers, the larger white mats were composed of only 1-2 types of gliding Beggiatoa filaments. Molecular analyses showed that most of the dominant mat-forming sulfide oxidizers were phylogenetically different from, but still closely related to, thiotrophs known from warmer ocean realms. The psychrophilic nature of the polar mat-forming thiotrophs was tested by visual observation of active mats at in situ temperature compared to their warming to > 4 A degrees C. The temperature range of mat habitats and the variation of sulfide and oxygen fluxes appear to be the main factors supporting the diversity of mat-forming thiotrophs in cold seeps at continental margins.
PY 2012
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 9
IS 8
UT 000308290200010
BP 2947
EP 2960
DI 10.5194/bg-9-2947-2012
ID 32360
ER

EF