Jejudonia soesokkakensis gen. nov., sp. nov., a member of the family Flavobacteriaceae isolated from the junction between the ocean and a freshwater spring, and emended description of the genus Aureitalea Park et al. 2012
A Gram-negative, non-flagellated, non-gliding and rod-shaped bacterial strain, designated SSK1-1T, was isolated from the junction between the ocean and a freshwater spring at Jeju island of South Korea. Strain SSK1-1T was found to grow optimally at 30 °C, at pH 7.0–7.5 and in the presence of 2 % (w/v) NaCl. Neighbour-joining, maximum-likelihood and maximum-parsimony phylogenetic trees based on 16S rRNA gene sequences revealed that strain SSK1-1T is phylogenetically most closely related to members of the genera Ulvibacter and Aureitalea, with which it exhibited 16S rRNA gene sequence similarities of 93.1–95.3 %. The results of chemotaxonomic analyses distinguish strain SSK1-1T from the genera Ulvibacter and Aureitalea. Strain SSK1-1T was determined to contain MK-6 as the predominant menaquinone and iso-C15:0, anteiso-C15:0 and iso-C16:0 as the major fatty acids. The major polar lipids of strain SSK1-1T were identified as phosphatidylethanolamine and one unidentified lipid. The DNA G + C content of strain SSK1-1T was determined to be 39.9 mol%. The phylogenetic analysis, chemotaxonomic data and other phenotypic properties revealed that the strain SSK1-1T can be distinguished from the members of previously known genera of the family Flavobacteriaceae. On the basis of the data presented, strain SSK1-1T is considered to represent a novel genus and species, for which the name Jejudonia soesokkakensis gen. nov., sp. nov. is proposed. The type strain is SSK1-1T (=KCTC 32325T = CCUG 63830T). An emended description of the genus Aureitalea is also proposed.
KeywordsJejudonia soesokkakensis Novel genus Novel species Ocean Freshwater spring Aureitalea
This work was supported by a Grant from the National Institute of Biological Resources (NIBR) funded by the Ministry of Environment (MOE) and the Program for Collection, Management and Utilization of Biological Resources and BK21 program from the Ministry of Science, ICT & Future Planning (MSIP) of the Republic of Korea. We are very grateful to Prof. Jang-Cheon Cho for kindly providing Ulvibacter antarcticus IMCC3101T.
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