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Abstract

Two Gram-staining-negative, aerobic, rod-shaped, bacteria that formed pale-pinkish colonies, designated HMF7056 and HMF7647 were isolated from Ginkgo () and Korean cornel dogwood (), respectively. Phylogenetic analyses based on sequences of 16S rRNA genes and 92 core genes indicated that two strains represent novel species within the family . HMF7056 and HMF7647 showed high 16S rRNA sequence similarities to N7d-4 (93.9 % and 95.7 %, respectively). The genomes of HMF7056 and HMF7647 were 5.2 and 4.8 Mbp in size with 50.5 and 42.5 % DNA G+C contents, respectively. Menaquinone-7 was the main respiratory quinone. The predominant fatty acids of HMF7056 and HMF7647 were iso-C and summed feature 3 (Cω7 and/or Cω6). The major polar lipid of both strains was phosphatidylethanolamine. The average nucleotide identity and digital DNA–DNA hybridization values of HMF7056, HMF7647 and related species were well below the threshold limit for species delineation (<68.9 and <20.8 %, respectively). The average amino acid identity values of HMF7056, HMF7647 with related type strains were below 67.8 and 68.3 %, respectively. On the basis of the results of phenotypic and phylogenetic characterizations, the two strains are considered to represent members of a novel genus of the family , for which the names gen. nov., sp. nov. and sp. nov. are proposed. The type strains are HMF7056 (=KCTC 72282 =NBRC 113964) and HMF7647 (=KCTC 72283 =NBRC 113965), respectively.

  • This is an open-access article distributed under the terms of the Creative Commons Attribution License. This article was made open access via a Publish and Read agreement between the Microbiology Society and the corresponding author’s institution.
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2023-09-27
2024-05-08
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