FN Archimer Export Format PT J TI Continuous enrichment culture and molecular monitoring to investigate the microbial diversity of thermophiles inhabiting deep-sea hydrothermal ecosystems BT AF POSTEC, Anne URIOS, Laurent LESONGEUR, Francoise OLLIVIER, Bernard QUERELLOU, Joel GODFROY, Anne AS 1:;2:;3:;4:;5:;6:; FF 1:PDG-DOP-DCB-EEP-LMEE;2:PDG-DOP-DCB-EEP-LMEE;3:PDG-DOP-DCB-EEP-LMEE;4:;5:PDG-DOP-DCB-EEP-LMEE;6:PDG-DOP-DCB-EEP-LMEE; C1 IFREMER, Ctr Brest, Lab Microbiol Environm Extremes, UMR 6197, F-29280 Plouzane, France. Univ Provence & Mediterranee, BAIM, IFR,Lab Microbiol, UR 101,Inst Rech Pour Dev, F-13288 Marseille, France. C2 IFREMER, FRANCE UNIV PROVENCE & MEDITERRANEE, FRANCE SI BREST SE PDG-DOP-DCB-EEP-LMEE IN WOS Ifremer jusqu'en 2018 copubli-univ-france IF 1.059 TC 20 TU Centre national de la recherche scientifique Institut français de recherche pour l'exploitation de la mer Université de Bretagne Occidentale UR https://archimer.ifremer.fr/doc/2005/publication-364.pdf LA English DT Article CR ATOS BO Unknown DE ;Sequence alignment;Anaerobic digester;Thermotogales;Thermophile;Deep sea vent AB The microflora developing during a continuous enrichment culture from a hydrothermal chimney sample was investigated by molecular methods. The culture was performed in a gas-lift bioreactor under anaerobic conditions, at 90 degrees C and pH 6.5, on a complex medium containing sulfur as the terminal electron acceptor. Archaeal and bacterial diversity was studied. Microorganisms affiliated with the genera Pyrococcus, Marinitoga, and Bacillus were detected through DGGE analysis of 16S rDNA. Additional sequences phylogenetically related to Thermococus and epsilon-Proteobacteria were detected by cloning and sequencing of 16S rDNA from two samples of the enrichment culture. In comparison, the sequences retrieved from cloning analysis from an enrichment culture performed in a flask (batch condition) using the same Culture medium showed that only members of the genus Thermococcus were cultivated. Therefore, continuous enrichment culture using the gas-lift bioreactor can be considered as an efficient and improved method for investigating microbial communities originating from deep-sea hydrothermal vents. PY 2005 PD MAR SO Current Microbiology SN 0343-8651 PU Springer VL 50 IS 3 UT 000228643300003 BP 138 EP 144 DI 10.1007/s00284-004-4443-z ID 364 ER EF