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Te.pi.di'phi.lus. L. masc. adj. tepidus lukewarm; Gr. masc. adj. philos friendly to; N.L. masc. n. Tepidiphilus liker of lukewarm conditions. Proteobacteria / Hydrogenophilia / Hydrogenophilales / Hydrogenophilaceae / Tepidiphilus Rods with poly‐beta‐hydroxybutyrate granules, non‐spore forming, Gram‐negative with a single polar flagellum. Aerobic, able to grow anaerobically in the presence of nitrate. Thermophilic, with the ability to grow between 25°C and 61°C, with optimum at 50–55°C, pH 6–8 and no special growth requirements. Chemo‐organotroph. Organic acids and amino acids, but not sugars, can be used as single carbon sources. Catalase‐ and cytochrome c oxidase positive. Ubiquinone 8 is the major respiratory quinone and the predominant fatty acids are C 16:0 , cyclo‐C 17:0 , cyclo‐C 19:0 ω8c, C 18:1 ω6c/ω7c, and C 17:0 . Major polar lipids are phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and phosphatidyl coline. Isolated from thermophilic digester, oil well or terrestrial hot spring. DNA G + C content (mol%): 58.6–66.1 (HPLC method). Type species: Tepidiphilus margaritifer Manaia et al. 2003VP emend. Poddar et al. 2014.
Original languageEnglish
Title of host publicationBergey's manual of systematics of archaea and bacteria
EditorsWilliam B. Whitman
PublisherJohn Wiley & Sons, Ltd
Number of pages16
ISBN (Electronic)9781118960608
Publication statusPublished - 16 Dec 2019


  • Tepidiphilus margaritifer
  • Aerobic digester
  • Thermophilic
  • Chemo‐organotroph
  • + poly‐beta‐hydroxybutyrate granules


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