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Granulicella sibirica sp. nov., a psychrotolerant acidobacterium isolated from an organic soil layer in forested tundra, West Siberia
Oshkin, I.Y.; Kulichevskaya, I.S.; Rijpstra, W.I.C.; Sinninghe Damsté, J.S.; Rakitin, A.L.; Ravin, N.V.; Dedysh, S.N. (2019). Granulicella sibirica sp. nov., a psychrotolerant acidobacterium isolated from an organic soil layer in forested tundra, West Siberia. Int. J. Syst. Evol. Microbiol. 69(4): 1195-1201. https://dx.doi.org/10.1099/ijsem.0.003290
In: International Journal of Systematic and Evolutionary Microbiology. Society for General Microbiology: Reading. ISSN 1466-5026; e-ISSN 1466-5034, more
Peer reviewed article  

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Keywords
    Acidobacteria [WoRMS]; Acidobacteriaceae [WoRMS]; Granuicella sibirica
Author keywords
    psychrotolerant bacterium; tundra soil; Granuicella sibirica sp. nov.; Acidobacteriaceae; Acidobacteria

Authors  Top 
  • Oshkin, I.Y.
  • Kulichevskaya, I.S.
  • Rijpstra, W.I.C., more
  • Sinninghe Damsté, J.S., more
  • Rakitin, A.L.
  • Ravin, N.V.
  • Dedysh, S.N.

Abstract
    An isolate of strictly aerobic, pale-pink pigmented bacteria, strain AF10T, was obtained from an organic soil layer in forested tundra, Nadym region, West Siberia. Cells of strain AF10T were Gram-negative, non-motile rods that produced an amorphous extracellular polysaccharide-like substance and formed large cell aggregates in old cultures. These bacteria were chemoorganotrophic, mildly acidophilic and psychrotolerant, and grew between pH 3.5 and 7.0 (optimum, pH 4.5–5.0) and at temperatures between 2 and 30 °C. The preferred growth substrates were sugars and some polysaccharides. The major fatty acids were iso-C15 : 0, C16 : 0, C16 : 1∆9 c and 13,16-dimethyl octacosanedioic acid. The genome of strain AF10T was 6.14 Mbp in size and encoded a wide repertoire of carbohydrate active enzymes. The genomic DNA G+C content was 59.8 mol%. Phylogenetic analysis indicated that strain AF10T is a member of the genus Granulicella, family Acidobacteriaceae , but displays 94.4–98.0 % 16S rRNA gene sequence similarity to currently described members of this genus. On the basis of phenotypic, chemotaxonomic, phylogenetic and genomic analyses, we propose to classify this bacterium as representing a novel species of the genus Granulicella, Granulicella sibirica sp. nov. Strain AF10T (=DSM 104461T=VKM B-3276T) is the type strain.

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