Hydrogenophilus

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Abstract

Hy.dro.ge.ni'phi.lus. Gr. neut. n. hydor water; Gr. v. genein to produce; N.L. neut. n. hydrogenum hydrogen (that which produces water); Gr. masc. adj. philos loving, friendly to; N.L. masc. n. Hydrogenophilus hydrogen lover.
Proteobacteria / Betaproteobacteria / Hydrogenophilales / Hydrogenophilaceae / Hydrogenophilus
Straight rods, 0.4–0.8 × 1.0–3.0 µm during exponential growth. Occur singly or in pairs (in Hydrogenophilus islandicus and Hydrogenophilus thermoluteolus). Motile or nonmotile. Gram‐negative. Nonsporulating. Aerobic or microaerobic, having a strictly respiratory type of metabolism, with oxygen or nitrate as the terminal electron acceptor. Colonies are yellow or grayish. Thermophilic; two species grow optimally at 50–55°C, and another at 63°C. Facultatively chemolithoautotrophic; can use H2 as an electron donor and CO2 as a carbon source. CO2 is fixed via the Calvin–Benson cycle. Acetate, pyruvate, dl‐lactate, and dl‐malate can be used as electron donors and carbon sources. Ammonium can be used as a nitrogen source. The major quinone system is ubiquinone 8. Isolated from hot springs and surrounding soil.
DNA G + C content (mol%): 61–65.
Type species: Hydrogenophilus thermoluteolus Hayashi, Ishida, Yokota, Kodama and Igarashi 1999, 785VP.
Original languageEnglish
Title of host publicationBergey's manual of systematics of archaea and bacteria
EditorsWilliam B. Whitman
PublisherJohn Wiley & Sons, Ltd
Number of pages13
ISBN (Electronic)9781118960608
DOIs
Publication statusPublished - 16 Dec 2019

Keywords

  • Hydrogenophilus
  • Hydrogenophilus thermoluteolus
  • Hydrogenophilus hirschii
  • Hydrogenophilus islandicus
  • Facultative chemolithoautotrophs
  • Thermophiles

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