Marimonas arenosa gen. nov., sp nov., isolated from sea sand

초록

A Gram-stain-negative, non-motile, non-spore-forming, aerobic and short rod-shaped bacterial strain, CAU 1311(T), was isolated from sea sand in the Republic of Korea. Strain CAU 1311(T) grew at temperatures from 20-37 degrees C, in the range of pH 6.5-10.0, and under various NaCl concentrations from 0-6% (w/v). Phylogenetic analysis based on the 16S rRNA gene sequence of CAU 1311(T) showed that it formed a distinct lineage within the family Rhodobacteraceae as a separate deep branch, with 96.2% or lower sequence identity to representatives of the genera Marivita, Aestuariivita, Mameliella, Sulfitobacter and Maritimibacter. The major fatty acid was C-18 : 1 omega 7c and the predominant respiratory quinone was Q-10. The major polar lipids were phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, an unidentified aminolipid and an unidentified glycolipid. The DNA G+C content was 60.7 mol%. On the basis of genotypic, phenotypic and chemotaxanomic findings, strain CAU 1311(T) could be classified as representing a novel species of a new genus of the family Rhodobacteraceae, for which the name Marimonas arenosa gen. nov., sp. nov. is proposed. The type strain of the type species is CAU 1311(T) (= KCTC 52189(T) = NBRC 111988(T)).

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