Abstract:
:A methanogenic archaeon, strain HC-2(T), was isolated from a deep diatomaceous shale formation. The strain grew on methanol, monomethylamine, dimethylamine, trimethylamine and dimethylsulphide, but not on acetate, H2/CO2, formate, 2-propanol, 2-butanol or cyclopentanol. Cells were Gram-stain-negative, non-motile, and coccus-like, 0.9-1.4 µm in diameter, and occurred singly, in pairs, or as aggregates. The strain grew at 10-40 °C (optimum 35 °C), pH 5.9-7.4 (optimum pH 6.6-6.8) and in 0-0.6 M NaCl (optimum 0.1-0.2 M). The genomic DNA G+C content was 41.5 mol% and the 16S rRNA gene sequence was closely related to those of Methanosarcina lacustris DSM 13486(T) (99.1%) and Methanosarcina siciliae DSM 3028(T) (98.3%). Values for DNA-DNA hybridization with these strains were less than 30%. The phenotypic and phylogenetic features of HC-2(T) indicate that it represents a novel species of the genus Methanosarcina , for which the name Methanosarcina subterranea sp. nov. is proposed. The type strain is HC-2(T) ( = DSM 22503(T) = JCM 15540(T) = NBRC 102578(T)).
journal_name
Int J Syst Evol Microbiolauthors
Shimizu S,Ueno A,Naganuma T,Kaneko Kdoi
10.1099/ijs.0.000072subject
Has Abstractpub_date
2015-04-01 00:00:00pages
1167-1171issue
Pt 4eissn
1466-5026issn
1466-5034journal_volume
65pub_type
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