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Volume 68, Issue 10

Flagellimonas aquimarina sp. nov., and transfer of Spongiibacterium flavum Yoon and Oh 2012 and S. pacificum Gao et al. 2015 to the genus Flagellimonas Bae et al. 2007 as Flagellimonas flava comb. nov. and F. pacifica comb. nov., respectively Free

Abstract

A Gram-stain-negative, non-spore-forming, rod-shaped, aerobic and diffusible yellow-coloured bacterial strain, designated strain ECD12 was isolated from a seaweed, Ecklonia cava. The isolate required sea salts for growth. Catalase-positive and oxidase-negative. A phylogenetic tree based on 16S rRNA gene sequences showed that strain ECD12 formed an evolutionary lineage within the radiation enclosing the members of genera Spongiibacterium and Flagellimonas sharing the highest similarity to Flagellimonas eckloniae DOKDO007 (96.8 % 16S rRNA gene sequence similarity) followed by Spongiibacterium pacificum SW169 (96.4 %) and Spongiibacterium flavum DSM 22638 (96.1 %). The major fatty acids were iso-C15 : 0, iso-C17 : 0 3-OH and iso-C15 : 1 G. The new isolate contained MK-6 as the only isoprenoid quinone and phosphatidylethanolamine, two unidentified amino lipids and two unidentified lipids as the major polar lipids. The genomic DNA G+C content is 39 mol%. A number of phenotypic characteristics such as the production of diffusible pigment distinguished strain ECD12 from the related species. On the basis of the evidence presented in this study, a novel species, Flagellimonas aquimarina sp. nov., is proposed for strain ECD12 (=KCTC 52351=JCM 32292). Based on the sequence similarity, phylogenetic relationship and common morphological, physiological and chemical characters among the members of the genera Spongiibacterium and Flagellimonas , it is recommended that the two genera are combined into a single genus. Thus, transfer of S. flavum Yoon and Oh 2012 and S . pacificum Gao et al. 2015 to the genus Flagellimonas Bae et al. 2007 as Flagellimonas flava comb. nov. and Flagellimonas pacifica comb. nov., respectively, is also proposed.

  • Received:
  • Accepted:
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Keyword(s): Flagellimonas aquimarina , seaweed Ecklonia cava and Spongiibacterium
© 2018 IUMS
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2018-08-16
2024-04-23
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Flagellimonas aquimarina sp. nov., and transfer of Spongiibacterium flavum Yoon and Oh 2012 and S. pacificum Gao et al. 2015 to the genus Flagellimonas Bae et al. 2007 as Flagellimonas flava comb. nov. and F. pacifica comb. nov., respectively
Int J Syst Evol Microbiol 68, 3266 (2018); https://doi.org/10.1099/ijsem.0.002975
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