Organohalide respiration in the subseafloor microbial ecosystem-Investigation of RDH genes and dehalogenation activity
| Project/Area Number |
21780085
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied microbiology
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| Research Institution | Kyushu University |
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Principal Investigator |
FUTAGAMI Taiki Kyushu University, 大学院・農学研究院, 寄附講座教員 (60512027)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 脱ハロゲン呼吸 / 還元的デハロゲナーゼ / 脱ハロゲン化反応 / 海底下生命圏 / 還元的脱ハロゲン化反応 |
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| Research Abstract |
Halogenated organic matter incorporated in marine sediments is one source of electron acceptors for anaerobic microbial respiration. A total of 32 putative reductive dehalogenase homologous genes were detected in sediments from the southeast Pacific off Peru, the eastern equatorial Pacific, the Juan de Fuca Ridge flank off Oregon, and the northwest Pacific off Japan, collected at a maximum depth of 358.6 m below the seafloor. In addition, dehalogenation activity toward 2,4,6-tribromophenol, 2,4,6-triiodophenol, and trichloroethene was observed in sediment slurry from the Nankai Trough Forearc Basin. These results suggest that dehalorespiration is an important energy-yielding pathway in the subseafloor microbial ecosystem.
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Report
(3 results)
Research Products
(4 results)
