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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 75, Issue 1

sp. nov., a bacterium isolated from the air of the Icelandic volcanic island Surtsey Open Access

Abstract

A novel bacterium, designated 19SA41, was isolated from the air of the Icelandic volcanic island Surtsey. Cells of strain 19SA41 are Gram-stain-negative, strictly aerobic, non-motile rods and form pale yellow-pigmented colonies. The strain grows at 4–30 °C (optimum, 22 °C), at pH 6–10 (optimum, pH 7.5) and with 0–4% NaCl (optimum, 0.5%). Phylogenetic analyses based on 16S rRNA gene sequences showed that 19SA41 belonged to the genus and is most similar to DSM 19743, with a sequence similarity of 96.52%. The new strain contained iso-C (22%) and summed feature 3 (Cω6c/Cω7c) (20%) as the predominant fatty acids. The major respiratory quinone was menaquinone-6 (100%). The polar lipid profile consisted of phosphatidylethanolamine and several uncharacterized amino lipids, glycolipids and lipids. The genome of the new strain was 4.01 Mbp, and its G+C content was 33.2 mol%. Based on characterization and comparative results, using a polyphasic taxonomic approach, we propose that the new isolate represents a novel species of the genus with the name sp. nov. The type strain is ISCaR-07695 (=DSM 116640 =UBOOC-M-3567).

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Keyword(s): air , Flavobacterium , genome , Iceland and volcanic islands Surstey
Funding
This study was supported by the:
  • Rannís (Award 174425-051)
    • Principal Award Recipient: DaussinAurélien
© 2025 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License.
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2025-01-23
2026-01-17

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Flavobacterium aerium sp. nov., a bacterium isolated from the air of the Icelandic volcanic island Surtsey
Int J Syst Evol Microbiol 75, 006647 (2025); https://doi.org/10.1099/ijsem.0.006647
/content/journal/ijsem/10.1099/ijsem.0.006647
/content/journal/ijsem/10.1099/ijsem.0.006647
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