Microbial Ecology of Fe (hydr)oxide Mats and Basaltic Rock from Vailulu'u Seamount, American Samoa

Lisa A. Sudek, Alexis S. Templeton, Bradley M. Tebo, Hubert Staudigel

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

Microbial community analysis of a deep-sea volcanic and hydrothermal system at Vailulu'u Seamount yielded 89 new organisms and three detailed 16S-rRNA gene clone libraries (one rock and two microbial mats). Proteobacterial communities dominate in most environments, but important differences are found between microbial mats from distinctly different geochemical environments and for the rock surface. Many cultured organisms are metabolically and functionally diverse, displaying at least two of the tested functions: Heterotrophy, Fe(II) and Mn(II) oxidation, and siderophore-production. Metabolic versatility of microorganisms is suggested as an important trait allowing diverse populations of bacteria to adapt to these environments.

Original languageEnglish (US)
Pages (from-to)581-596
Number of pages16
JournalGeomicrobiology Journal
Volume26
Issue number8
DOIs
StatePublished - Dec 1 2009

Keywords

  • Biogeochemical cycling
  • Community structure
  • Deep biosphere
  • Iron-oxidizing bacteria
  • Molecular ecology

ASJC Scopus subject areas

  • Microbiology
  • Environmental Chemistry
  • Environmental Science(all)
  • Earth and Planetary Sciences (miscellaneous)

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