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A Gram-stain-negative bacterium, designated strain 40Bstr34 T , isolated from a sediment sample from the West Pacific Ocean, was taxonomically characterized by using a polyphasic approach. The strain was phylogenetically close to Jiella aquimaris LZB041 T and Jiella endophytica CBS5Q-3 T , with 16S rRNA gene sequence similarities of 98.5 and 97.1 %, respectively. The genome of strain 40Bstr34 T featured a G+C content of 65.7 % for a 5.8 Mb chromosome. Up-to-date bacterial core gene set analysis revealed that strain 40Bstr34 T represents one independent lineage with J.aquimaris LZB041 T . In silico DNA-DNA hybridization values between strain 40Bstr34 T and its phylogenetic neighbours ranged from 30.3-34.2 %, below the cutoff of 70 %. In addition, the corresponding average nucleotide identity values were between 81.8-83.7 %, which are lower than 95 % threshold. The predominant cellular fatty acids of strain 40Bstr34 T were summed feature 8 (C 18 : 1   ω 6c and/or C 18 : 1   ω 7c ), cyclo-C 19 : 0   ω8 c and iso-C 17 : 0 3-OH, and ubiquinone-10 as the predominant respiratory quinone. The major polar lipids included phosphatidylethanolamine, phosphatidylmonomethylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, two unidentified aminolipids and two unidentified lipids. Based on the results of phenotypic, chemotaxonomic and genetic analyses, strain 40Bstr34 T is identified as representing a novel species of the genus Jiella for which the name Jiella pacifica sp. nov. is proposed. The type strain is 40Bstr34 T (=JCM 33903 T =MCCC 1K04569 T ).

A Gram-stain-negative bacterium, designated strain 501str8 T , was isolated from a sediment sample collected from the East Pacific Ocean. 16S rRNA gene sequence analysis revealed that strain 501str8 T belonged to the genus Muricauda , with closely related type strains Muricauda aquimarina SW-63 T (98.5 %), Muricauda lutimaris SMK-108 T (98.3 %) and Muricauda ruestringensis B1 T (97.9 %). Up-to-date bacterial core gene set analysis revealed that strain 501str8 T represented one independent lineage with M. aquimarina SW-63 T . The average nucleotide identity values of strain 501str8 T with M. aquimarina SW-63 T and M. lutimaris SMK-108 T were 80.2 and 81.3 %, respectively. In silico DNA-DNA hybridization values between strain 501str8 T and M. aquimarina SW-63 T and M. lutimaris SMK-108 T were 22.8 and 32.9 %, respectively. The predominant isoprenoid quinone was menaquinone-6, and iso-C 15 : 0 , iso-C 17 : 0 3-OH and iso-C 15 : 1 G were the dominant cellular fatty acids. The G+C content of the genomic DNA was 42.8 mol%. Differential phylogenetic distinctiveness and chemotaxonomic differences, together with the phenotypic properties observed in this study, revealed that strain 501str8 T could be differentiated from closely related species. Therefore, we propose that strain 501str8 T represents a novel species of the genus Muricauda , for which the name Muricauda oceani sp. nov. is suggested. The type strain is 501str8 T (=JCM 33902 T =MCCC 1K04567 T ).

A Gram-stain-negative bacterium, designated IO390501 T , was isolated from a sea water sample from the Indian Ocean and taxonomically characterized using a polyphasic approach. The strain is phylogenetically close to ' Devosia lucknowensis ' L15 and Devosia chinhatensis IPL18 T , with 16S rRNA gene sequence similarity of 97.7 and 97.4 %, respectively. The genome of IO390501 T has a DNA G+C content of 61.9 mol% for the 3.9 Mb chromosome. Genome-based phylogenetic trees indicated that IO390501 T clusters as an independent lineage with ' D. lucknowensis ' L15. Genomic relatedness of in silico DNA-DNA hybridization between IO390501 T and phylogenetic neighbours ranged from 18.8 to 21.5 %, below the cutoff of 70 %, and corresponding average nucleotide identity values were between 71.4 and 79.0 %, lower than the 95.0 % threshold. The predominant cellular fatty acids of IO390501 T are summed feature 8 (C 18 : 1 ω7 c / C18  : 1 ω6 c ) and C 16  :  0 . IO390501 T contains ubiquinone-10 as the sole respiratory quinone, and phosphatidylglycerol and glycolipids as the major polar lipids. On the basis of the results of phenotypic, chemotaxonomic and genetic analyses, strain IO390501 T represents a novel species of the genus Devosia for which the name Devosia indica sp. nov. is proposed. The type strain is IO390501 T .

Strain IO390502 T , isolated from surface seawater in the Indian Ocean, was characterised using a polyphasic taxonomy approach. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain IO390502 T belongs to the genus Paracoccus and is closely related to Paracoccus seriniphilus DSM 14827 T (97.6%), followed by P. zeaxanthinifaciens JCM 21774 T (97.5%), P. homiensis DSM 17862 T (97.3%), P. marcusii DSM 11574 T (97.2%), P. haeundaensis BC 74171 T (97.0%) and P. carotinifaciens E-396 T (97.0%). Cells are Gram-negative, aerobic, poly-β-hydroxybutyrate-accumulating, motile, rod-shaped, and forms creamy-white colonies. Optimal growth occurred at 25-30 °C, pH 5-8, and in the presence of 3-8% NaCl. The genome of strain IO390502 T has a G+C content of 64.9 mol% and a 3.5 Mb chromosome. The in silico DNA-DNA hybridisation and average nucleotide identity values between strain IO390502 T and the three closely related taxa, P. seriniphilus DSM 14827 T , P. zeaxanthinifaciens JCM 21774 T and P. homiensis DSM 17862 T , are 19.6%, 21.9% and 20.6%, and 76.0%, 79.9% and 77.8%, respectively. Phosphatidylglycerol is the major lipid present, ubiquinone-10 (Q-10) is the sole isoprenoid quinone, and the major cellular fatty acid is C 18:1 ω7c. Based on data from phenotypic tests and genotypic differences between strain IO390502 T and its close phylogenetic relatives, strain IO390502 T represents a new species belonging to the genus Paracoccus, for which the name Paracoccus indicus sp. nov. is proposed. The type strain is IO390502 T (= JCM 32637 T  = CCTCC AB 2018071 T ).