Hymenobacter amundsenii sp. nov. resistant to ultraviolet radiation, isolated from regoliths in Antarctica

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Publikace nespadá pod Lékařskou fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.

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SEDLÁČEK Ivo PANTŮČEK Roman KRÁLOVÁ Stanislava MAŠLAŇOVÁ Ivana HOLOCHOVÁ Pavla STAŇKOVÁ Eva VRBOVSKÁ Veronika ŠVEC Pavel BUSSE Hans Jürgen

Rok publikování 2019
Druh Článek v odborném periodiku
Časopis / Zdroj Systematic and Applied Microbiology
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
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Doi http://dx.doi.org/10.1016/j.syapm.2018.12.004
Klíčová slova Hymenobacter amundsenii; Antarctica; Soil bacteria; Regolith; UV-radiation resistance; Species description
Přiložené soubory
Popis A group of thirteen bacterial strains was isolated from rock samples collected in a deglaciated northern part of James Ross Island, Antarctica. The cells were rod-shaped, Gram-stain-negative, non-motile, catalase positive, and produced moderately slimy, ultraviolet light (UVC)-irradiation-resistant and red-pink pigmented colonies on R2A agar. A polyphasic taxonomic approach based on 16S rRNA gene sequencing, extensive biotyping, fatty acid profile, chemotaxonomy analyses, and whole genome sequencing were applied in order to clarify the taxonomic position of these isolates. Phylogenetic analysis based on the 16S rRNA gene indicated that all isolates constituted a coherent group belonging to the genus Hymenobacter. The closest relatives to the representative isolate P5136(T) were Hymenobacter psychrophilus BZ33r(T) and Hymenobacter rubripertinctus CCM 8852(T), exhibiting 97.53% and 97.47% 16S rRNA pairwise similarity, respectively. Average nucleotide identity calculated from the whole-genome sequencing data supported the finding that P5136(T) represents a distinct Hymenobacter species. The major components in fatty acid profiles were Summed Feature 3 (C-16:1 omega 7c/C-16:1 omega 6c), C-16:1 omega 5c, C-15:0 iso and C-15:0 anteiso. The cellular quinone content contained unanimously menaquinone MK-6 and MK-7 (ratio 1:5.1). The predominant polar lipid was phosphatidylethanolamine, and moderate to minor amounts of two unknown polar lipids, two unknown aminolipids, one unknown glycolipid and two unknown glycophospholipids were present. The G + C content of genomic DNAs is 60.31 mol%. Based on all the obtained results, we propose a novel species for which the name Hymenobacter amundsenii sp. nov. is suggested, with the type strain P5136(T) (= CCM 8682(T) =LMG 29687(T)). (C) 2018 Elsevier GmbH. All rights reserved.
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