Hymenobacter baengnokdamensis sp. nov., Isolated from the Soil of a Crater Lake in Korea
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Hymenobacter baengnokdamensis sp. nov., Isolated from the Soil of a Crater Lake in Korea Ji Hee Lee1 · Min‑Kyu Kim1 · Jong‑Hyun Jung1,2 · Ho Seong Seo1,2 · Jing Zhang1,3 · Han Na Choe4 · Seon Choi5 · Chi Nam Seong5 · Sangyong Lim1,2 Received: 12 April 2020 / Accepted: 22 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract An aerobic, Gram-stain-negative, non-motile, non-spore-forming, rod-shaped and pink-colored bacterial strain, designated BRD72T, was isolated from a crater lake (Baengnokdam) at the top of Mt. Hallasan in the Republic of Korea. Cells were catalase-positive and oxidase-negative. Phylogenetic analysis based on the 16S rRNA gene sequences revealed that the isolate was a member of the genus Hymenobacter and most closely related to Hymenobacter marinus KJ035T (96.2% similarity). The isolate was found to produce carotenoid pigment, but not flexirubin-type pigment. The predominant fatty acids of strain BRD72T were summed feature 3 (C16:1 ω7c and/or C16:1 ω6c, 21.6%), iso-C15:0 (17.9%), anteiso-C15:0 (13.3%) and summed feature 4 (iso-C17:1 I and/or anteiso-C17:1 B, 11.3%). The major polar lipids were phosphatidylethanolamine, an unidentified amino lipid, and two unidentified aminophospholipids. The main respiratory quinone was menaquinone-7 (MK-7), and the main polyamine was homospermidine. The DNA G+C content was 59.8 mol%. Based on the phylogenetic, physiological, and chemotaxonomic characteristics, strain BRD72T represents a novel species, for which the name Hymenobacter baengnokdamensis sp. nov. is proposed. The type strain is BRD72T (= KCTC 72649T = JCM 33837T).
Introduction The genus Hymenobacter (Hymenobacter roseosalivarius, type species) was first proposed by Hirsch et al. [1], as a member of the family Cytophagaceae, phylum Bacteroidetes. At the time of writing, the genus includes 80 species with validly published names in the List of Prokaryotic Accession number The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain BRD72T is MK752551. The GenBank/EMBL/DDBJ accession number for the whole genome sequence of strain BRD72T is CP044285. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00284-020-02225-7) contains supplementary material, which is available to authorized users.
names with Standing in Nomenclature (https://lpsn.dsmz. de/genus/hymenobacter) [2]. The members of genus Hymenobacter have been isolated from air [3], soil [4, 5], water [6, 7]. The presence of Hymenobacter species has also been confirmed in various extreme environments, including polar and arid regions, e.g., from permafrost sediment [8], glacial ice [9], Antarctic soils [10], and desert [11, 12], suggesting that these bacteria can help us to understand adaptation mechanisms and survival strategies of living organisms against extreme environmental stresses, coupled with the fact that some Hymenobacter species are resistant to gamma and UV radiation [13, 14]. In addition, most species produce caro
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