Genome sequence of the thermophilic fresh-water bacterium spirochaeta caldaria type strain (h1t), reclassification of spirochaeta caldaria, spirochaeta stenostrepta, and spirochaeta zuelzerae in the genus treponema as treponema caldaria comb. nov., treponema stenostrepta comb. nov., and treponema zuelzerae comb. nov., and emendation of the genus treponema

Birte Abt, Markus Göker, Carmen Scheuner, Cliff Han, Megan Lu, Monica Misra, Alla Lapidus, Matt Nolan, Susan Lucas, Nancy Hammon, Shweta Deshpande, Jan Fang Cheng, Roxanne Tapia, Lynne A. Goodwin, Sam Pitluck, Konstantinos Liolios, Ioanna Pagani, Natalia Ivanova, Konstantinos Mavromatis, Natalia MikhailovaMarcel Huntemann, Amrita Pati, Amy Chen, Krishna Palaniappan, Miriam Land, Loren Hauser, Cynthia D. Jeffries, Manfred Rohde, Stefan Spring, Sabine Gronow, John C. Detter, James Bristow, Jonathan A Eisen, Victor Markowitz, Philip Hugenholtz, Nikos C. Kyrpides, Tanja Woyke, Hans Peter Klenk

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Spirochaeta caldaria Pohlschroeder et al. 1995 is an obligately anaerobic, spiral-shaped bac-terium that is motile via periplasmic flagella. The type strain, H1T, was isolated in 1990 from cyanobacterial mat samples collected at a freshwater hot spring in Oregon, USA, and is of in-terest because it enhances the degradation of cellulose when grown in co-culture with Clos-tridium thermocellum. Here we provide a taxonomic re-evaluation for S. caldaria based on phylogenetic analyses of 16S rRNA sequences and whole genomes, and propose the reclassi-fication of S. caldaria and two other Spirochaeta species as members of the emended genus Treponema. Whereas genera such as Borrelia and Sphaerochaeta possess well-distinguished genomic features related to their divergent lifestyles, the physiological and functional ge-nomic characteristics of Spirochaeta and Treponema appear to be intermixed and are of little taxonomic value. The 3,239,340 bp long genome of strain H1T with its 2,869 protein-coding and 59 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Original languageEnglish (US)
Pages (from-to)88-105
Number of pages18
JournalStandards in Genomic Sciences
Volume8
Issue number1
DOIs
StatePublished - 2013

Keywords

  • Chemoorganotrophic
  • Geba
  • Gram-negative
  • Motile
  • Obligately anaerobic
  • Periplasmic flagella
  • Spiral-shaped
  • Spirochaeta
  • Spirochaetaceae
  • Thermophilic
  • Treponema

ASJC Scopus subject areas

  • Genetics

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