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Abstract

A Gram-stain-negative bacterium, designated strain 501str8, was isolated from a sediment sample collected from the East Pacific Ocean. 16S rRNA gene sequence analysis revealed that strain 501str8 belonged to the genus , with closely related type strains SW-63 (98.5 %), SMK-108 (98.3 %) and B1 (97.9 %). Up-to-date bacterial core gene set analysis revealed that strain 501str8 represented one independent lineage with SW-63. The average nucleotide identity values of strain 501str8 with SW-63 and SMK-108 were 80.2 and 81.3 %, respectively. DNA–DNA hybridization values between strain 501str8 and SW-63 and SMK-108 were 22.8 and 32.9 %, respectively. The predominant isoprenoid quinone was menaquinone-6, and iso-C, iso-C 3-OH and iso-C G were the dominant cellular fatty acids. The G+C content of the genomic DNA was 42.8 mol%. Differential phylogenetic distinctiveness and chemotaxonomic differences, together with the phenotypic properties observed in this study, revealed that strain 501str8 could be differentiated from closely related species. Therefore, we propose that strain 501str8 represents a novel species of the genus , for which the name sp. nov. is suggested. The type strain is 501str8 (=JCM 33902=MCCC 1K04567).

Funding
This study was supported by the:
  • Jifang Yang , Key Science and Technology Program of Ningbo City , (Award 2012C10038)
  • Bingxia Dong , Zhejiang Provincial Top Key Discipline of Biological Engineering , (Award CX2018006)
  • Jigang Chen , China Ocean Mineral Resources Research and Development Association , (Award DY135-E2-02-07)
  • Jifang Yang , China Ocean Mineral Resources Research and Development Association , (Award DY125-15-R-03)
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2020-06-04
2020-10-20
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