01541naa a2200253 a 450000100080000000500110000800800410001910000200006024500960008026000090017652008190018565000270100465300170103165300130104865300170106165300170107870000240109570000210111970000220114070000190116270000180118170000240119977300640122316212412001-07-24       2000    bl ---       0--  u    #d1 aSIMANKOVA, M. V  aAcetobacterium tundrae sp. nov., a new psychrophilic acetogenic bacterium from tundra soil.  c2000  aA new psychrophilic, anaerobic, acetogenic bacterium from the tundra wetland soil of Polar Ural is described. The organism fermented H2/CO2, formate, methanol, and several sugars to acetate as the sole end-product. The temperature range for growth was 1-30 C with an optimum at 20 C. The bacterium showed no growth at 32C. Cells were gram-positive, oval-shaped, flagellated rods 0.7 - 1.1 x 1.1 -4.0 um in size when grown at 1-20 C. At 25-30 C, the cell size increased up to 2-3 x 10-15 um due to a defect in cell division. The DNA G+C content of the organism was 39.2 mol%. Based upon 16S rDNA analysis and DNA-DNA reassociation studies, the organism was classified in the genus Acetobacterium as a new species for which the name Acetobacterium tundrae sp. nov. is proposed. The type strain is Z-4493 (=dsm 9173).  aAcetobacterium tundrae  aAcetogenesis  aAnaerobe  aPaychrotroph  aPsychrophile1 aKOTSYURBENKO, O. R.1 aSTACKEBRANDT, E.1 aKOSTRIKINA, N. A.1 aLYSENKO, A. M.1 aOSIPON, G. A.1 aNOZHEVNIKOVA, A. N.  tArchives of Microbiology, New Yorkgv.174, p.440-447, 2000.