Five cold-adapted bacteria belonging to the genus Mucilaginibacter were isolated from lichen and soil samples collected from Finnish Lapland and investigated in detail by phenotypic and phylogenetic analyses. Based on 16S rRNA gene phylogeny, the novel strains represent three new branches within the genus Mucilaginibacter. The strains were aerobic, chemo-organotrophic, non-motile rods and formed pigmented, smooth, mucoid colonies on solid media. The strains grew between 0 and 33°C (optimum growth at 25°C) and at pH 4.5-8.0 (optimum growth at pH 6.0). The main cellular fatty acids were iso-C15:0, summed feature 3 (C16:1ω7c/iso-C 15:0 2-OH) and iso-C17:0 3-OH and the major respiratory quinone was MK-7. The DNA G+C contents were 44.0-46.5 mol%. Based on phylogenetic, phenotypic and chemotaxonomic data, the strains represent three novel species of the genus Mucilaginibacter for which the names Mucilaginibacter frigoritolerans sp. nov. (type strain FT22T =ATCC BAA-1854 T 5LMG 25359T), Mucilaginibacter lappiensis sp. nov. (type strain ANJLI2T =ATCC BAA-1855T =LMG 25358T) and Mucilaginibacter mallensis sp. nov. (type strain MP1X4T =ATCC BAA-1856T =LMG 25360T) are proposed.
|Original language||English (US)|
|Number of pages||8|
|Journal||International Journal of Systematic and Evolutionary Microbiology|
|State||Published - Dec 2010|
All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics