What question did this study set out to answer?

To resolve the taxonomic placement of 18 thermophilic Methanobacterium isolates within the order Methanobacteriales using molecular and phenotypic methods.

January 1, 2000INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY

Phylogenetic analysis of 18 thermophilic Methanobacterium isolates supports the proposals to create a new genus, Methanothermobacter gen. nov., and to reclassify several isolates in three species, Methanothermobacter thermautotrophicus comb. nov., Methanothermobacter wolfeii comb. nov., and Methanothermobacter marburgensis sp. nov.

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Authors

AWAlain WasserfallenETH Zurich JNJörk NöllingHelixBind (United States)PPPeter PfisterUniversity of Zurich

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Implication

Phylogenetic analysis reveals distinct divergence among thermophilic Methanobacterium isolates, supporting creation of the genus Methanothermobacter and species-level reclassification.

Key Points

To resolve the taxonomic placement of 18 thermophilic Methanobacterium isolates within the order Methanobacteriales using molecular and phenotypic methods.
Evaluated 18 thermophilic isolates using 16S rRNA sequence analysis and antigenic fingerprinting, corroborated by plasmid and phage typing.
Conducted comparative phylogenetic analysis across 16S rRNA data from 30 representative strains in the order Methanobacteriales.
Showed that mesophilic and thermophilic Methanobacterium isolates are distantly related, providing evidence to separate thermophiles into the novel genus Methanothermobacter.
Reclassified 15 isolates into three distinct species: Methanothermobacter thermautotrophicus (eight isolates), Methanothermobacter wolfeii (four isolates), and Methanothermobacter marburgensis (three isolates).
Reassigned nine isolates previously termed Methanobacterium thermoformicicum into either M. thermautotrophicus (six isolates) or M. wolfeii (three isolates).

Cite This Study

Wasserfallen et al. (2000) studied this question.

synapsesocial.com/papers/69db01ce1e19c8ae08836002 https://doi.org/10.1099/00207713-50-1-43

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Implication

Phylogenetic analysis reveals distinct divergence among thermophilic Methanobacterium isolates, supporting creation of the genus Methanothermobacter and species-level reclassification.

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Cite This Study

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