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A Gram-negative, rod-shaped, non-motile, non-spore forming bacterium (SV96T) was isolated from wetland soil near Ny-Ålesund, Svalbard. On the basis of 16S rRNA gene sequence similarity, strain SV96T was shown to belong to the Gammaproteobacteria, related to Methylobacter psychrophilus Z-0021T (99·1 %), Methylobacter luteus ATCC 49878T (97·3 %), Methylobacter marinus A45T (97·0 %) and Methylobacter whittenburyi ATCC 51738T (95·8 %); the closest related species within the genus Methylomicrobium with a validly published name was Methylomicrobium album ATCC 33003T (95·0 %). Chemotaxonomic data (including the major fatty acids: 16 : 1ω8, 16 : 1ω7 and 16 : 1ω5t) supported the affiliation of strain SV96T to the genus Methylobacter. The results of DNA–DNA hybridization, physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain SV96T from the four Methylobacter species mentioned above. Strain SV96T therefore represents a novel species, for which the name Methylobacter tundripaludum sp. nov. is proposed (type strain SV96T=DSM 17260T=ATCC BAA-1195T).
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