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International journal of systematic and evolutionary microbiology

Agaribacter marinus gen. nov., sp. nov., an agar-degrading bacterium from surface seawater.


PMID 24763604

Abstract

A Gram-stain-negative, motile, mesophilic, aerobic, rod-shaped bacterium, strain 8-8(T), was isolated from surface seawater at Muroto, Kochi, Japan. The strain exhibited agar-degrading activity. Phylogenetic analyses based on 16S rRNA gene sequences showed that the strain fell within the family Alteromonadaceae and clustered distantly with members of the genus Glaciecola (≤ 94.0% similarity). The DNA G+C content was 41.8 mol%. The major fatty acids were C16 : 1ω7c and/or iso-C15 : 0 2-OH, C16 : 0 and C18 : 1ω7c and the major hydroxy fatty acid was C12 : 0 3-OH. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and an unidentified polar lipid; lysophosphatidylethanolamine and unidentified polar lipids were found as minor components. The major quinone was Q-8. On the basis of phenotypic, genotypic and chemotaxonomic data, strain 8-8(T) represents a novel species of a new genus, for which the name Agaribacter marinus gen. nov., sp. nov. is proposed. The type strain of Agaribacter marinus is 8-8(T) ( = NBRC 110023(T) = LMG 28167(T)).

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