Detection of a Bacterial Group within the Phylum Chloroflexi and Reductive-Dehalogenase-Homologous Genes in Pentachlorobenzene-Dechlorinating Estuarine Sediment from the Arakawa River, Japan

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概要

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• We enriched a pentachlorobenzene (pentaCB)-dechlorinating microbial consortium from an estuarine-sediment sample obtained from the mouth of the Arakawa River. The sediment was incubated together with a mixture of four electron donors and pentaCB, and after five months of incubation, the microbial community structure was analyzed. Both DGGE and clone library analyses showed that the most expansive phylogenetic group within the consortium was affiliated with the phylum Chloroflexi, which includes Dehalococcoides-like bacteria. PCR using a degenerate primer set targeting conserved regions in reductive-dehalogenase-homologous (rdh) genes from Dehalococcoides species revealed that DNA fragments (approximately 1.5-1.7 kb) of rdh genes were amplified from genomic DNA of the consortium. The deduced amino acid sequences of the rdh genes shared several characteristics of reductive dehalogenases. The mixed culture could be maintained by transferring small inocula into fresh synthetic mineral medium containing either acetate or pyruvate, which supported the dechlorination of pentaCB by acting as an electron donor.

• 日本微生物生態学会の論文

著者

• NOJIRI Hideaki

  Biotechnology Research Center, The University of Tokyo

• YAMANE Hisakazu

  Biotechnology Research Center, The University of Tokyo

• OMORI Toshio

  Department of Industrial Chemistry, Shibaura Institute of Technology

• Omori T

  Coll. Of Systems Engineering And Sci. Dep. Of Bioscience And Engineering Shibaura Inst. Of Technol.

• SANTOH KYOSUKE

  Biotechnology Research Center, The University of Tokyo

• KOUZUMA ATSUSHI

  Biotechnology Research Center, The University of Tokyo

• ISHIZEKI RYOKO

  Department of Industrial Chemistry, Faculty of Engineering, Shibaura Institute of Technology

• IWATA KENICHI

  Biotechnology Research Center, The University of Tokyo

• SHIMURA MINORU

  Environmental Biotechnology Laboratory, Railway Technical Research Institute

• HAYAKAWA TOSHIO

  Environmental Biotechnology Laboratory, Railway Technical Research Institute

• HOAKI TOSHIHIRO

  Technology Research Center, Taisei Corporation

• HABE HIROSHI

  Biotechnology Research Center, The University of Tokyo

• Omori Toshio

  Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo

• Iwata Keiko

  Laboratory Of Molecular And Cellular Biology Department Of Life Science Faculty Of Bioresources Mie

• Iwata K

  Biotechnology Research Center The University Of Tokyo

• Nojiri H

  Biotechnology Res. Center The Univ. Of Tokyo

• Noguchi Haruko

  Biotechnology Research Center The University Of Tokyo

• Yamane Hisakazu

  Biotechnology Res. Center The Univ. Of Tokyo

• Yamane Hisakazu

  Biotechnology Res. Center Univ. Of Tokyo

• Yamane Hisakazu

  Biotech. Res. Ctr. The Univ. Of Tokyo

• Nojiri Hideaki

  Biotechnology Res. Center The Univ. Of Tokyo

• Habe Hiroshi

  Biotechnology Research Center University Of Tokyo

• Shimura Minoru

  Environmental Biotechnology Laboratory Railway Technical Research Institute

• Santoh Kyosuke

  Biotechnology Research Center The University Of Tokyo

• Shimura Minoru

  Environmental Biotechnology Lab. Railway Technical Res. Inst.

• Ishizeki Ryoko

  Department Of Industrial Chemistry Faculty Of Engineering Shibaura Institute Of Technology

• Yamane Hisakazu

  Department Of Agricultural Chemistry Faculty Of Agriculture University Of Tokyo

• Horisaki Tadafumi

  Dep. Of Chemistry Fac. Of Sci. Tokyo Univ. Of Sci.

• Kouzuma Atsushi

  Biotechnology Research Center The University Of Tokyo

• Habe H

  Research Institute For Innovations In Sustainable Chemistry National Institute Of Advanced Industria

• Hayakawa Toshio

  Environmental Biotechnology Laboratory Railway Technical Research Institute

• Yada H

  Biotechnology Research Center University Of Tokyo

• Omori Toshio

  Shibaura Institute Of Technology

• Hayakawa Toshio

  Environmental Biotechnology Laboratory

• YAMANE Hisakazu

  Biotech. Res. Ctr. , The Univ. of Tokyo

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