Methanobacterium thermoalcaliphilum spec. nov., a new moderately alkaliphilic and thermophilic autotrophic methanogen期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Methanobacterium thermoalcaliphilum spec. nov., a new moderately alkaliphilic and thermophilic autotrophic methanogen

Authors:	Karl-Heinz Blotevogel Ulrich Fischer Margit Mocha Sigrid Jannsen

Affiliation:	(1) Fachbereich Biologie, AG Mikrobiologie, Universität Oldenburg, D-2900 Oldenburg, Federal Republic of Germany;(2) Fachbereich Biologie, AG Geomikrobiologie, Universität Oldenburg, D-2900 Oldenburg, Federal Republic of Germany

Abstract:	An autotrophic moderately alkaliphilic and thermophilic nonmotile rod-shaped methanogen was isolated from a biogas plant. The isolate grows only on H₂+CO₂ and requires yeast extract. Growth optimum is at 60°C with a generation time of 4 h. In the absence of substrates complete lysis occurs. The pH range for growth is 7.5–8.5. Growth was also observed at pH values above 9.0. The DNA base composition is 38.8 mol% G+C. According to its physiological properties the nameMethanobacterium thermoalcaliphilum is proposed.Abbreviations G+C Guanine+cytosine

Keywords:	Methanobacterium Autotrophic Thermophilic Lysis Coenzyme F₄₂₀ Methanobacterium thermoalcaliphilum
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