Uliginosibacterium aquaticum sp. nov., Isolated from a Freshwater Lake
2021
Song, Jaeho | Kim, Mirae | Park, Miri S. | Joung, Yochan | Kang, Ilnam | Cho, Jang-Cheon
A Gram-stain-negative, aerobic, chemoheterotrophic, rod-shaped bacterium motile by a polar flagellum, designated IMCC34675ᵀ, was isolated from Chungju Lake, an artificial freshwater reservoir in Republic of Korea. The 16S rRNA gene sequence analysis indicated that strain IMCC34675ᵀ belongs to the genus Uliginosibacterium, sharing ≤ 97.1% sequence similarities with the type strains of the genus. Whole genome sequencing of strain IMCC34675ᵀ revealed a 4.1 Mbp of genome size with 62.4% of the DNA G + C content. The IMCC34675ᵀ genome shared 73.3% of average nucleotide identity and 19.9% of digital DNA-DNA hybridization values to the genome of Uliginosibacterium gangwonense DSM 18521ᵀ, the type species of the genus. The major fatty acids of strain IMCC34675ᵀ were summed feature 3 (comprising C₁₆:₁ω6c and/or C₁₆:₁ω7c) and C₁₆:₀. The respiratory quinone detected in the strains was ubiquinone-8 (Q-8). The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, one unidentified aminophospholipid, one aminolipid, and five unidentified lipids. Based on the phylogenetic and phenotypic characterization, strain IMCC34675ᵀ was considered to represent a novel species within the genus Uliginosibacterium, for which the name Uliginosibacterium aquaticum sp. nov. is proposed with IMCC34675ᵀ (= KACC 21758ᵀ = NBRC 114418ᵀ) as the type strain.
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