FN Archimer Export Format
PT J
TI Effect of variation of environmental conditions on the microbial communities of deep-sea vent chimneys, cultured in a bioreactor
BT 
AF BYRNE, Nathalie
   LESONGEUR, Francoise
   BIENVENU, Nadege
   GESLIN, Claire
   ALAIN, Karine
   PRIEUR, Daniel
   GODFROY, Anne
AS 1:1;2:1;3:1;4:1;5:1;6:1;7:1;
FF 1:;2:PDG-DOP-DCB-EEP-LMEE;3:;4:;5:;6:;7:PDG-DOP-DCB-EEP-LMEE;
C1 IFREMER, Ctr Brest, Lab Microbiol Environm Extremes, UMR6197, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-DOP-DCB-EEP-LMEE
IN WOS Ifremer jusqu'en 2018
   copubli-univ-france
IF 2
TC 9
TU Centre national de la recherche scientifique
   Institut de recherche pour le développement
   Institut français de recherche pour l'exploitation de la mer
   Service Hydrographique et Océanographique de la Marine
   Université de Bretagne Occidentale
   Université de Bretagne-Sud
UR https://archimer.ifremer.fr/doc/2009/publication-6920.pdf
LA English
DT Article
CR EXOMAR
BO Unknown
DE ;16S rRNA genes;Oligotrophic condition;Environmental condition;Bioreactor;Continuous enrichment culture;Microbial diversity;Deep sea hydrothermal vent
AB Both cultivation and molecular techniques were used to investigate the microbial diversity and dynamic of a deep-sea vent chimney. The enrichment cultures performed in a gas-lift bioreactor were inoculated with a black smoker chimney sample collected on TAG site on the mid-Atlantic ridge. To mimic as close as possible environmental conditions, the cultures were performed in oligotrophic medium with nitrogen, hydrogen and carbon dioxide (N-2/H-2/CO2) gas sweeping. Also, the temperature was first settled at a temperature of 85A degrees C and colloidal sulphur was added. Then, the temperature was lowered to 60A degrees C and sulphur was omitted. Archaeal and bacterial diversity was studied in both culture and natural samples. Through 16S rRNA gene sequences analysis of the enrichment cultures microorganisms affiliated to Archeoglobales, Thermococcales were detected in both conditions while, Deferribacterales and Thermales were detected only at 65A degrees C in the absence of sulphur. Single-stranded conformational polymorphism and quantitative PCR permit to study the microbial community dynamic during the two enrichment cultures. The effect of environmental changes (modification of culture conditions), i.e. temperature, medium composition, electron donors and acceptors availability were shown to affect the microbial community in culture, as this would happen in their environment. The effect of environmental changes, i.e. temperature and medium composition was shown to affect the microbial community in culture, as this could happen in their environment. The modification of culture conditions, such as temperature, organic matter concentration, electron donors and acceptors availability allowed to enrich different population of prokaryotes inhabiting hydrothermal chimneys.
PY 2009
PD JUN
SO Extremophiles
SN 1431-0651
PU Springer
VL 13
IS 4
UT 000267781200003
BP 595
EP 608
DI 10.1007/s00792-009-0242-6
ID 6920
ER

EF