論文

査読有り
2022年7月

Hydrocarbon Cycling in the Tokamachi Mud Volcano (Japan): Insights from Isotopologue and Metataxonomic Analyses

Microorganisms
  • Alexis Gilbert
  • ,
  • Mayuko Nakagawa
  • ,
  • Koudai Taguchi
  • ,
  • Naizhong ZHANG
  • ,
  • Akifumi Nishida
  • ,
  • Naohiro Yoshida

10
7
開始ページ
1417
終了ページ
1417
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.3390/microorganisms10071417
出版者・発行元
MDPI AG

Understanding hydrocarbon cycling in the subsurface is important in various disciplines including climate science, energy resources and astrobiology. Mud volcanoes provide insights into biogeochemical processes occurring in the subsurface. They are usually associated with natural gas reservoirs consisting mainly of methane and other hydrocarbons as well as CO2. Stable isotopes have been used to decipher the sources and sinks of hydrocarbons in the subsurface, although the interpretation can be ambiguous due to the numerous processes involved. Here we report new data for hydrocarbon isotope analysis, including position-specific isotope composition of propane, for samples from the Tokamachi mud volcano area, Japan. The data suggest that C2+ hydrocarbons are being biodegraded, with indirect production of methane (“secondary methanogenesis”). Data from chemical and isotopic composition are discussed with regard to 16S rRNA analysis, which exhibits the presence of hydrogenotrophic and acetoclastic methoanogens. Overall, the combination of isotopologue analysis with 16S rRNA gene data allows refining of our understanding of hydrocarbon cycling in subsurface environments.

リンク情報
DOI
https://doi.org/10.3390/microorganisms10071417
URL
https://www.mdpi.com/2076-2607/10/7/1417
ID情報
  • DOI : 10.3390/microorganisms10071417
  • eISSN : 2076-2607
  • ORCIDのPut Code : 116012959

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