4.4 Article

Glaciibacter flavus sp. nov., isolated from a lichen sample

Journal

ARCHIVES OF MICROBIOLOGY
Volume 203, Issue 5, Pages 2439-2444

Publisher

SPRINGER
DOI: 10.1007/s00203-021-02247-0

Keywords

Glaciibacter; Glaciibacter flavus sp; nov; Lichen

Categories

Funding

  1. National Natural Science Foundation of China [31460005, 32060001]
  2. Major research project of Guangxi for science and technology [AA18242026]

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A novel Actinobacterium strain YIM 131861(T) was isolated from lichen collected from the South Bank Forest of the Baltic Sea in Germany, belonging to the genus Glaciibacter. The strain exhibited specific growth and physiological characteristics, with high sequence similarity to Glaciibacter superstes NBRC 104264(T). The proposed name for this novel species is Glaciibacter flavus sp. nov., with the type strain being YIM 131861(T) (= CGMCC 1.16588(T) = NBRC 113572(T)).
A novel Actinobacterium strain YIM 131861( T), was isolated from lichen collected from the South Bank Forest of the Baltic Sea, Germany. It was Gram-stain-positive, strictly aerobic, catalase positive and oxidase negative, yellow pigmented. Cells were motile with a polar flagellum, irregular rod shaped and did not display spore formation. The strain grew at 15 - 30 degrees C (optimum 25 degrees C), at pH 6.0 - 10.0 (optimum pH 7.0) and in the presence of 0 - 1.5% (w/v) NaCl (optimum 1%). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain YIM 131861( T) belonged to the genus Glaciibacter, and exhibited a high sequence similarity (96.4%) with Glaciibacter superstes NBRC 104264( T). The genomic DNA G + C content of strain YIM 131861( T) was 68.2 mol%. The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between strain YIM 131861( T) and Glaciibacter superstes NBRC 104264( T) were 73.2 and 19.9% based on the draft genome sequence. The cell-wall peptidoglycan type was B2 gamma and contained the 2, 4-diaminobutyric acid as the diagnostic amino acid. Whole cell sugars were galactose, rhamnose, ribose and glucose. It contained MK-12 and MK-13 as the predominant menaquinones. The major cellular fatty acids (> 10%) were identified as anteiso-C-15:0, iso-C-16:0 and anteiso-C-17:0. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol and two unknown glycolipids. Based on the results of phenotypic, chemotaxonomic and phylogenetic analyses, strain YIM 131861( T) should belong to the genus Glaciibacter and represents a novel species of the genus Glaciibacter, for which the name Glaciibacter flavus sp. nov. is proposed. The type strain is YIM 131861( T) (= CGMCC 1.16588( T) = NBRC 113572( T)).

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