Analysis of the archaeal sub-seafloor community at Suiyo Seamount on the Izu-Bonin Arc

Kurt Hara, Takeshi Kakegawa, Kan Yamashiro, Akihiko Maruyama, Jun Ichiro Ishibashi, Katsumi Marumo, Tetsuro Urabe, Akihiko Yamagishi

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12 Citations (Scopus)


A sub-surface archaeal community at the Suiyo Seamount in the Western Pacific Ocean was investigated by 16S rRNA gene sequence and whole-cell in situ hybridization analyses. In this study, we drilled and cased holes at the hydrothermal area of the seamount to minimize contamination of the hydrothermal fluid in the sub-seafloor by penetrating seawater. PCR clone analysis of the hydrothermal fluid samples collected from a cased hole indicated the presence of chemolithoautotrophic primary biomass producers of Archaeoglobales and the Methanococcales-related archaeal HTE1 group, both of which can utilize hydrogen as an electron donor. We discuss the implication of the microbial community on the early history of life and on the search for extraterrestrial life.

Original languageEnglish
Pages (from-to)1634-1642
Number of pages9
JournalAdvances in Space Research
Issue number9 SPEC. ISS.
Publication statusPublished - 2005

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • General Earth and Planetary Sciences


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