Distribution of putative denitrifying methane oxidizing bacteria in sediment of a freshwater lake, Lake Biwa
スポンサーリンク
概要
- 論文の詳細を見る
Methane oxidation coupled to denitrification is mediated by 'Candidatus methylomirabilis oxyfera', which belongs to the candidate phylum NC10. The distribution of putative denitrifying methane oxidizing bacteria related to "M. oxyfera" was investigated in a freshwater lake, Lake Biwa, Japan. In the surface layer of the sediment from a profundal site, a phylotype closely related to "M. oxyfera" was most frequently detected among NC10 bacteria in PCR analysis of the 16S rRNA gene. In the sediment, sequences related to "M. oxyfera" were also detected in a pmoA gene library. The presence of NC10 bacteria was also confirmed by catalyzed reporter deposition fluorescence in situ hybridization. Denaturing gradient gel electrophoresis (DGGE) and quantitative real-time PCR indicated that the abundance of "M. oxyfera"-related phylotype was higher in the upper layers of the profundal sediment. The horizontal distribution of the putative methanotrophs in sediment of the lake was also analyzed by DGGE, which revealed that their occurrence was restricted to deep water areas. These results agreed with those in a previous study of another freshwater lake, and suggested that the upper layer of the profundal sediments is major the habitat for denitrifying methanotrophs.
著者
-
Fujii Masanori
Inst. Of Low Temp. Sci. Hokkaido Univ.
-
Fukui Manabu
The Institute Of Low Temperature Science Hokkaido University
-
TSUTSUMI MASAZUMI
The Institute of Low Temperature Science, Hokkaido University
-
KOJIMA HISAYA
The Institute of Low Temperature Science, Hokkaido University
関連論文
- PB-77 Community structure of microorganisms in the snow algal blooms of Langhovde, Antarctica(Community structure,Poster presentation B)
- 1-21 Microbial community structure of hypersaline lakes in Skarvsnes, Antarctica(Community structure 2,Oral presentation)
- PB-08 Effects of temperature on sulfate-reducing consortia which degrade petroleum hydrocarbon(Bioremediation,Poster presentation B)
- Microbial Community Structure, Pigment Composition, and Nitrogen Source of Red Snow in Antarctica
- Distribution of putative denitrifying methane oxidizing bacteria in sediment of a freshwater lake, Lake Biwa
- Vertical Profiles of Abundance and Potential Activity of Methane-Oxidizing Bacteria in Sediment of Lake Biwa, Japan
- Isolation and Characterization of Novel Sulfate-Reducing Bacterium Capable of Anaerobic Degradation of p-Xylene