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| Content Provider | Springer Nature Link |
|---|---|
| Author | Mochimaru, Hanako Yoshioka, Hideyoshi Tamaki, Hideyuki Nakamura, Kohei Kaneko, buyuki Sakata, Susumu Imachi, Hiroyuki Sekiguchi, Yuji Uchiyama, Hiroo Kamagata, Yoichi |
| Copyright Year | 2007 |
| Abstract | Microbial diversity and methanogenic potential in formation water samples from a dissolved-in-water type gas field were investigated by using 16S rRNA gene libraries and culture-based methods. Two formation water samples (of 46 and 53°C in temperature) were obtained from a depth of 700 to 800 m. Coenzyme F420-autofluorescence indicated that 103–104 cells per ml of active methanogens were present, accounting for at least 10% of the total cell count. The 16S rRNA gene sequence analysis indicated that the diversity of Archaea and Bacteria of the two samples was quite limited; i.e., the archaeal libraries were dominated by the sequences related to Methanobacterium formicicum and Methanothermobacter thermautotrophicus, and the bacterial libraries were dominated by the sequences related to Hydrogenophilus and Deferribacter. Of the methanogenic substrates tested using the formation water-based medium, only H2–CO2 gave rise to methane formation. Those dominant archaeal and bacterial genera have the potential to use hydrogen for growth at the in situ temperatures, suggesting that the formation water of the Pliocene strata in the gas field has been provided with hydrogen, probably from underneath the strata, and thus on-going active methanogenesis has been occurring to date. |
| Starting Page | 453 |
| Ending Page | 461 |
| Page Count | 9 |
| File Format | |
| ISSN | 14310651 |
| Journal | Extremophiles |
| Volume Number | 11 |
| Issue Number | 3 |
| e-ISSN | 14334909 |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2007-01-31 |
| Publisher Place | Japan |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Methanogen Hydrogenotroph Acetotroph Gas field Formation water Archaea Methane Anaerobes Ecology Biotechnology Microbiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Molecular Medicine Microbiology |
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