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Methylobacter tundripaludum sp. nov., a methane-oxidizing bacterium from Arctic wetland soil on the Svalbard islands, Norway (78° N)

¹ Department of Biology, Faculty of Science, University of Tromsø, N-9037 Tromsø, Norway
² Department of Biological Sciences, University of Waikato, Private Bag 3105, Hamilton, New Zealand

Correspondence
Mette M. Svenning
Mette.Svenning{at}ib.uit.no

A Gram-negative, rod-shaped, non-motile, non-spore forming bacterium (SV96^T) was isolated from wetland soil near Ny-Ålesund, Svalbard. On the basis of 16S rRNA gene sequence similarity, strain SV96^T was shown to belong to the Gammaproteobacteria, related to Methylobacter psychrophilus Z-0021^T (99·1 %), Methylobacter luteus ATCC 49878^T (97·3 %), Methylobacter marinus A45^T (97·0 %) and Methylobacter whittenburyi ATCC 51738^T (95·8 %); the closest related species within the genus Methylomicrobium with a validly published name was Methylomicrobium album ATCC 33003^T (95·0 %). Chemotaxonomic data (including the major fatty acids: 16 : 18, 16 : 17 and 16 : 15t) supported the affiliation of strain SV96^T to the genus Methylobacter. The results of DNA–DNA hybridization, physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain SV96^T from the four Methylobacter species mentioned above. Strain SV96^T therefore represents a novel species, for which the name Methylobacter tundripaludum sp. nov. is proposed (type strain SV96^T=DSM 17260^T=ATCC BAA-1195^T).

Published online ahead of print on 26 August 2005 as DOI 10.1099/ijs.0.63728-0.

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene, pmoA and nifH sequences of Methylobacter tundripaludum SV96^T are AJ414655, AJ414658 and AY937260, respectively.

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