Brambilla, E. et al., 2010. Complete genome sequence of Methanoplanus petrolearius type strain (SEBR 4847). Standards in genomic sciences, 3(2), pp. 203–11; Free Article

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Methanoplanus petrolearius Ollivier et al. 1998 is the type strain of the genus Methanoplanus. The strain was originally isolated from an offshore oil field from the Gulf of Guinea. Members of the genus Methanoplanus are of interest because they play an important role in the carbon cycle and also because of their significant contribution to the global warming by methane emission in the atmosphere. Like other archaea of the family Methanomicrobiales, the members of the genus Methanoplanus are able to use CO(2) and H(2) as a source of carbon and energy; acetate is required for growth and probably also serves as carbon source. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first complete genome sequence of a member of the family Methanomicrobiaceae and the sixth complete genome sequence from the order Methanomicrobiales. The 2,843,290 bp long genome with its 2,824 protein-coding and 57 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Ollivier, B. et al., 1997. Methanoplanus petrolearius sp. nov., a novel methanogenic bacterium from an oil-producing well. FEMS microbiology letters, 147(1), pp. 51–6

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A disc-shaped methanogenic bacterium designated strain SEBR 4847T (T = type strain) was isolated from a sample collected from an African offshore oil field. Strain SEBR 4847T was non-motile, had a G + C content of 50 mol% and produced methane from H2 + CO2, formate, and CO2 + propanol. Strain SEBR 4847T grew optimally at 37 degrees C; no growth was observed at 25 degrees C or 45 degrees C. It grew in the presence of up to 50 g/l NaCl; 10-30 g/l was required for optimal growth. The optimum pH for growth was 7.0. Doubling time was about 10 h under optimal conditions. Based on 16S rRNA sequence analysis, the isolate was identified as a new species of the genus Methanoplanus and designated Methanoplanus petrolearius sp. nov. The type strain is SEBR 4847T (= OCM 486).