A Phylogenetic Analysis of Aquifex pyrophilus

S. Burggraf, G. J. Olsen, K. O. Stetter, C. R. Woese

Research output: Contribution to journalArticlepeer-review


The 16S rRNA of the bacterion Aquifex pyrophilus, a microaerophilic, oxygen-reducing hyperthermophile, has been sequenced directly from the PCR amplified gene. Phylogenetic analyses show the Aq. pyrophilus lineage to be probably the deepest (earliest) in the (eu) bacterial tree. The addition of this deep branching to the bacterial tree further supports the argument that the Bacteria are of thermophilic ancestry.

Original languageEnglish (US)
Pages (from-to)352-356
Number of pages5
JournalSystematic and Applied Microbiology
Issue number3
StatePublished - 1992


  • 16S rRNA
  • Bacteria
  • Deep branching
  • Evolution
  • Maximum likelihood
  • Thermophilic origin

ASJC Scopus subject areas

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics
  • Applied Microbiology and Biotechnology

Fingerprint Dive into the research topics of 'A Phylogenetic Analysis of Aquifex pyrophilus'. Together they form a unique fingerprint.

Cite this