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Volume 71, Issue 6

sp. nov., an airborne bacterium isolated from King George Island, Antarctica No Access

Abstract

A rod-shaped and Gram-stain-negative bacterial strain 9A, was isolated from an air sample collected at King George Island, maritime Antarctica. Phylogenetic analysis based on 16S rRNA gene sequence reveals that strain 9A belongs to the genus and shows the highest similarity to CCM 8649 (96.8 %). The DNA G+C content based on the draft genome sequence is 64.9 mol%. Strain 9A is strictly aerobic, psychrophilic, catalase-positive, oxidase-positive and non-motile. Growth is observed at 0–20 °C (optimum 10 °C), pH 6.0–8.0 (optimum pH 7.0), and in the absence of NaCl. The predominant menaquinone of strain 9A is MK-7 and the major fatty acids comprise Summed Feature 3 (C c and/or C c; 25.2 %), iso-C (23.2 %), C c (11.6 %), Summed Feature 4 (anteiso-C B/iso-C I) (9.6 %) and anteiso-C (9.6 %). The polar lipid profile consists of the major lipid phosphatidylethanolamine and moderate to minor amounts of phosphatidylserine, unidentified aminolipids, aminophospholipids, aminophosphoglycolipids, polar lipids lacking a functional group and an unidentified phospholipid and a glycolipid. In the polyamine pattern -homospermidine is predominant. On the basis of the results obtained, strain 9A is proposed as a novel species of the genus , for which the name sp. nov. is suggested. The type strain is 9A (=CCM 8971=LMG 32109=DSM 111653).

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Keyword(s): airborne bacteria , extremophiles , Hymenobacter sp. , maritime Antarctica and psychrophiles
© 2021 The Authors
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2021-06-21
2024-04-24
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Hymenobacter caeli sp. nov., an airborne bacterium isolated from King George Island, Antarctica
Int J Syst Evol Microbiol 71, 004838 (2021); https://doi.org/10.1099/ijsem.0.004838
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