|Paludibaculum fermentans gen. nov., sp. nov., a facultative anaerobe capable of dissimilatory iron reduction from subdivision 3 Acidobacteria|Kulichevskaya, I.S.; Suzina, N.E.; Rijpstra, W.I.C.; Sinninghe Damsté, J.S.; Dedysh, S.N. (2014). Paludibaculum fermentans gen. nov., sp. nov., a facultative anaerobe capable of dissimilatory iron reduction from subdivision 3 Acidobacteria. Int. J. Syst. Evol. Microbiol. 64: 2857-2864. hdl.handle.net/10.1099/ijs.0.066175-0
In: International Journal of Systematic and Evolutionary Microbiology. Society for General Microbiology: Reading. ISSN 1466-5026, more
|Authors|| || Top |
- Kulichevskaya, I.S.
- Suzina, N.E.
- Rijpstra, W.I.C., more
- Sinninghe Damsté, J.S., more
- Dedysh, S.N.
A facultatively anaerobic, non-pigmented and non-spore-forming bacterium was isolated from a littoral wetland of a boreal lake located in Valaam Island, Northern Russia, and designated strain P105T. Cells of this isolate are Gram-negative, non-motile rods coated by S-layers with p2 lattice symmetry. Sugars are the preferred growth substrates. Under anoxic conditions, strain P105T is capable of fermentation and dissimilatory Fe(III) reduction. End products of fermentation are acetate, propionate, and H2. Strain P105T is a mildly acidophilic, mesophilic organism, capable of growth at a pH range of 4.0 - 7.2 (optimum pH 5.5-6.0) and at temperatures between 4 and 35 °C (optimum at 20-28 °C). The major fatty acids are iso-C15:0 and C16:1w7c; the cells contain also significant amounts of 13, 16-dimethyl octacosanedioic acid. The major polar lipids are phosphocholine and phosphoethanolamine; the quinone is MK-8. The G+C content of the DNA is 60.5 mol%. 16S rRNA gene sequence analysis showed that strain P105T belongs to subdivision 3 Acidobacteria and is only distantly related (90% sequence similarity) to the only currently characterized member of this subdivision, Bryobacter aggregatus. The novel isolate differs from Bryobacter aggregatus by cell morphology, ability to grow under anoxic conditions, the presence of iron- and nitrate-reducing capabilities, as well as quinone and polar lipid compositions. These differences suggest that strain P105T (=DSM 26340T = VKM B-2878T) represents a novel genus and species, for which the name Paludibaculum fermentans gen. nov., sp. nov., is proposed.