Seongchinamella unica gen. nov., sp. nov., isolated from a tidal mudflat of beach, and transfer of Halioglobus sediminis to Seongchinamella sediminis comb. nov. and Halioglobus lutimaris to Pseudohalioglobus gen. nov. as Pseudohalioglobus lutimaris comb. nov.

A Gram-reaction-negative, motile by gliding, rod-shaped bacterium, designated strain GH4-78 T , was isolated from the tidal mudflat of a beach in the Republic of Korea. Cells were aerobic, catalase-positive, oxidase-negative and produced cream-coloured colonies. Q-8 was the only isoprenoid quinone. The major fatty acids were summed feature 8 (C 18 : 1  ω 7 c and/or C 18 : 1  ω 6 c ), summed feature 3 (C 16 : 1   ω6 c and/or C 16 : 1   ω7 c ) and C 16 : 0 . The major polar lipids are phosphatidylethanolamine and phosphatidylglycerol. Results of phylogenetic analyses based on 16S rRNA gene sequences revealed that strain GH4-78 T formed a distinct lineage with Halioglobus sediminis (98.2 % sequence similarity). The DNA G+C content was 59.9 mol%. The average nucleotide identity value with the closest relative was 82.90 %. On the basis of the results from phenotypic, chemotaxonomic, phylogenetic and phylogenomic analyses, strain GH4-78 T (=KCTC 62383 T =DSM 106349 T ) represents a novel species of a new genus in the family Halieaceae , for which the name Seongchinamella unica gen. nov., sp. nov. is proposed. Moreover, the transfers of Halioglobus sediminis Han et al . 2019 to Seongchinamella sediminis comb. nov. and Halioglobus lutimaris Shi et al . 2018 to Pseudohalioglobus gen. nov. as Pseudohalioglobus lutimaris comb. nov. are also proposed, with the emended description of the genus Halioglobus .