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Abstract

Strain ELA7, a novel Gram-negative, non-motile bacterium with a white pigment and rod-shaped morphology, was isolated from the faeces of an eland at Seoul Grand Park, a zoo in the Republic of Korea. The novel bacterial strain grew optimally in R2A medium under the following conditions: 0 % (w/v) NaCl, pH 8.0, and 34 °C. Based on phylogenetic analyses using 16S rRNA gene sequencing, strain ELA7 was found to have the closest relatedness to Gsoil 104 (97.8 %), RP-3-15 (97.2 %), THG S15-2 (97.0 %), THG-G12 (97.0 %), and LMG 31463 (96.9 %). The genome size and genomic DNA G+C content of strain ELA7 were 3.63 Mbp and 46.5 %, respectively. A whole genome-level comparison of strain ELA7 with Gsoil 104, RP-3-15, DSM 12126, and RP-1-14 revealed average nucleotide identity values of 72.0, 71.8, 71.9, and 71.6 %, respectively. The major fatty acids were summed feature 3 (comprising C ω7 and/or C ω6) and MK-7 was the predominant respiratory quinone. The major polar lipids of strain ELA7 were phosphatidylethanolamine, sphingolipid, unidentified aminolipid, unidentified phosphoglycolipid, unidentified glycolipid, and eight unidentified lipids. Considering our chemotaxonomic, genotypic, and phenotypic findings, strain ELA7 (=KACC 23137=JCM 36003) is identified as representing a novel species within the genus , for which the name sp. nov. is proposed.

Funding
This study was supported by the:
  • Ministry of Science, ICT and Future Planning (Award NRF-2022R1A4A1025913)
    • Principle Award Recipient: WoojunPark
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2024-07-17
2024-12-03
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