Aestuariibius insulae gen. nov., sp nov., isolated from a tidal flat sediment

作者：Park Sooyeon; Choi Jeehyun; Won Sung Min; Park Ji Min; Yoon Jung Hoon^*

来源：International Journal of Systematic and Evolutionary Microbiology, 2018, 68(4): 1350-1355.

DOI：10.1099/ijsem.0.002679

A Gram-stain-negative, non-motile and ovoid or rod-shaped bacterial strain, DBTF-13(T), which was isolated from a tidal flat sediment of the Yellow Sea in South Korea, was characterized taxonomically. Strain DBTF-13(T) grew optimally at 25-30 degrees C and pH 7.0-8.0, and in the presence of 2.0% (w/v) NaCl. The phylogenetic trees based on 16S rRNA gene sequences revealed that strain DBTF-13(T) formed an evolutionary lineage independent of other genera, including the genera Pseudooctadecabacter and Octadecabacter. Strain DBTF-13(T) exhibited 16S rRNA gene sequence similarity values of 96.9% to the type strain of Pseudooctadecabacter jejudonensis, and of 95.8-96.5% to the type strains of Octadecabacter species. Strain DBTF-13(T) contained Q-10 as the predominant ubiquinone and C-18 : 1 omega 7c and C-16 : 0 as the major fatty acids. The major polar lipids of strain DBTF-13(T) were phosphatidylcholine, phosphatidylglycerol, one unidentified aminolipid and one unidentified lipid. The DNA G+C content of strain DBTF-13(T) was 61.6 mol%. The chemotaxonomic data and other differential phenotypic properties made it reasonable to differentiate strain DBTF-13(T) from the genera Pseudooctadecabacter and Octadecabacter. On the basis of the data presented, strain DBTF-13(T) constitutes a new genus and species within the class Alphaproteobacteria, for which the name Aestuariibius insulae gen. nov., sp. nov. is proposed. The type strain is DBTF-13(T) (=KACC 19432(T) = NBRC 113038(T)).

• 出版日期2018-4