20173003
not annotated - annotated - LINNAEUS only
Methanobacterium arcticum sp. nov., a methanogenic archaeon from Holocene Arctic permafrost.
A mesophilic, non-motile, hydrogenotrophic, rod-shaped methanogen, designated M2(T), was isolated from Holocene permafrost sediments of the Kolyma lowland in the Russian Arctic. Cells were 3-6 mum long and 0.45-0.5 mum wide. Strain M2(T) grew on H(2)/CO(2) and formate. Optimum conditions for growth were 37^0C, pH 6.8-7.2 and 0.1 M NaCl. The DNA G+C content was 38.1 mol%. On the basis of 16S rRNA gene sequence comparison with known methanogens, strain M2(T) was affiliated with the genus Methanobacterium and was most closely related to Methanobacterium veterum MK4(T) and Methanobacterium bryantii DSM 863(T) (both 99 % 16S rRNA gene sequence similarity). However, no significant DNA-DNA relatedness was observed between strain M2(T) and these type strains. We propose that strain M2(T) represents a novel species, with the name Methanobacterium arcticum sp. nov., with type strain M2(T) (=DSM 19844(T) =VKM B-2371(T)).
Ann file
T1 Species 173 175 M2
N1 Reference T1 Taxonomy:386456
T2 Species 327 329 M2
N2 Reference T2 Taxonomy:386456
T3 Species 550 552 M2
N3 Reference T3 Taxonomy:386456
T4 Species 635 663 Methanobacterium veterum MK4
N4 Reference T4 Taxonomy:408577
T6 Species 671 704 Methanobacterium bryantii DSM 863
N6 Reference T6 Taxonomy:2161
T7 Species 827 829 M2
N7 Reference T7 Taxonomy:386456
T8 Species 880 882 M2
N8 Reference T8 Taxonomy:386456
T9 Species 981 983 M2
N9 Reference T9 Taxonomy:386456
T10 Species 0 25 Methanobacterium arcticum
N10 Reference T10 Taxonomy:386456 Methanobacterium arcticum
T11 Species 928 953 Methanobacterium arcticum
N11 Reference T11 Taxonomy:386456 Methanobacterium arcticum