Abstract
A Gram-negative, aerobic, rod-shaped, motile by gliding and yellow-pigmented bacterium, designated strain 10Alg 130T, that displayed the ability to destroy polysaccharides of red and brown algae, was isolated from the red alga Ahnfeltia tobuchiensis. The phylogenetic analysis based on 16S rRNA gene sequence placed the novel strain within the genus Flavobacterium, the type genus of the family Flavobacteriaceae, the phylum Bacteroidetes, with sequence similarities of 96.2 and 95.7 % to Flavobacterium jumunjiense KCTC 23618T and Flavobacterium ponti CCUG 58402T, and 95.3–92.5 % to other recognized Flavobacterium species. The prevalent fatty acids of strain 10Alg 130T were iso-C15:0, iso-C15:0 3-OH, iso-C17:0 3-OH, C15:0 and iso-C17:1ω9c. The polar lipid profile consisted of phosphatidylethanolamine, two unknown aminolipids and three unknown lipids. The DNA G+C content of the type strain was 34.3 mol%. The new isolate and the type strains of recognized species of the genus Flavobacterium could strongly be distinguished by a number of phenotypic characteristics. A combination of the genotypic and phenotypic data showed that the algal isolate represents a novel species of the genus Flavobacterium, for which the name Flavobacterium ahnfeltiae sp. nov. is proposed. The type strain is 10Alg 130T (=KCTC 32467T = KMM 6686T).
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Acknowledgments
We thank Dr. Jung-Sook Lee (Daejeon, Republic of Korea) for providing us with the type strains F. jumunjiense KCTC 23618T and F. dongtanense KCTC 22671T, and Professor Edward R.B. We thank Moore (Göteborg, Sweden) for providing us with the type strain F. ponti CCUG 58402T. This research was supported by grants of the Presidium of the Russian Academy of Sciences “Molecular and Cell Biology” and the Presidium of the Far-Eastern Branch of the Russian Academy of Sciences no. 12-III-A-06-106.
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Communicated by Erko Stackebrandt.
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203_2014_1010_MOESM2_ESM.ppt
Maximum likelihood phylogenetic tree based on 16S rRNA gene sequences showing the phylogenetic position of F. ahnfeltiae sp. nov. 10Alg 130T and related members of the family Flavobacteriaceae. Bootstrap values are based on 1,000 replications. Bar, 0.01 substitutions per nucleotide position. (PPT 92 kb)
203_2014_1010_MOESM3_ESM.ppt
Minimum evolution phylogenetic tree based on 16S rRNA gene sequences showing the phylogenetic position of F. ahnfeltiae sp. nov. 10Alg 130T and related members of the family Flavobacteriaceae. Bootstrap values are based on 1,000 replications. Bar, 0.01 substitutions per nucleotide position. (PPT 92 kb)
203_2014_1010_MOESM4_ESM.pdf
Polar lipid profiles of strain 10Alg 130T (a), Flavobacterium dokdonense LW30T (b), F. jumunjinense HME7102T (c) and F. ponti GSW-R14T (d) after separation by two-dimensional thin-layer chromatography. PE, phosphatidylethanolamine; AL 1-3, unidentified aminolipids; L 1-5, unknown lipids. (PDF 78 kb)
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Nedashkovskaya, O.I., Balabanova, L.A., Zhukova, N.V. et al. Flavobacterium ahnfeltiae sp. nov., a new marine polysaccharide-degrading bacterium isolated from a Pacific red alga. Arch Microbiol 196, 745–752 (2014). https://doi.org/10.1007/s00203-014-1010-2
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DOI: https://doi.org/10.1007/s00203-014-1010-2