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  • Title: Methanolobus zinderi sp. nov., a methylotrophic methanogen isolated from a deep subsurface coal seam.
    Author: Doerfert SN, Reichlen M, Iyer P, Wang M, Ferry JG.
    Journal: Int J Syst Evol Microbiol; 2009 May; 59(Pt 5):1064-9. PubMed ID: 19406794.
    Abstract:
    A methanogenic organism from the domain Archaea (SD1(T)) was isolated from saline water released from a coal seam located 926 m below the surface via a methane-producing well near Monroe, Louisiana, USA. Growth and methanogenesis were supported with methanol, monomethylamine, dimethylamine or trimethylamine, but not with dimethylsulfide, formate, acetate or H(2)/CO(2). Cells grew in high-salt minimal medium but growth was stimulated with yeast extract or tryptone. Cells were single, non-motile, irregular coccoids 0.5-1.0 microm in diameter and the cell wall contained protein. Conditions for the maximum rate of growth were 40-50 degrees C, 0.2-0.6 M NaCl, 100->or=200 mM MgCl(2), and pH 7.0-8.0. The G+C content of the genomic DNA was 42+/-1mol %. A comparison of 16S rRNA gene sequences indicated that strain SD1(T) was most closely related to Methanolobus oregonensis DSM 5435(T) with 96 % gene sequence similarity. It is proposed that strain SD1(T) represents a novel species, Methanolobus zinderi sp. nov. The type strain is SD1(T) (=ATCC BAA-1601(T)=DSM 21339(T)).
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