title: Actibacterium atlanticum sp. nov., isolated from surface seawater of the Atlantic Ocean.
abstract: A taxonomic study was carried out on strain 22II-S11-z10(T), which was isolated from the surface seawater of the Atlantic Ocean. The bacterium was found to be Gram-stain negative, oxidase and catalase positive, oval- to rod-shaped and non-motile. Growth was observed at salinities of 0.5-9 % and at temperatures of 10-41 °C. The isolate can reduce nitrate to nitrite, degrade gelatin and aesculin, but can not degrade Tween 80. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 22II-S11-z10(T) belongs to the genus Actibacterium, with the highest sequence similarity to the type strain Actibacterium mucosum CECT 7668(T) (97.3 %). The DNA-DNA hybridization estimate value between strain 22II-S11-z10(T) and A. mucosum CECT 7668(T) was 19.30 ± 2.29 %. The principal fatty acids were identified as Summed Feature 8 (C18:1 ω7c/ω6c as defined by the MIDI system, 75.2 %) and Summed Feature 3 (C16:1 ω7c/ω6c, 6.9 %). The G+C content of the chromosomal DNA was determined to be 59.0 mol%. The respiratory quinone was determined to be Q-10 (100 %). Phosphatidylglycerol, phosphatidylcholine, two phospholipids, two aminolipids and two lipids were identified in the polar lipids. The combined genotypic and phenotypic data show that strain 22II-S11-z10(T) represents a novel species within the genus Actibacterium, for which the name Actibacterium atlanticum sp. nov. is proposed, with the type strain 22II-S11-z10(T) (=MCCC 1A09298(T) = LMG 27158(T)).
authors.affiliation: State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, SOA, Key Laboratory of Marine Genetic Resources of Fujian Province, Collaborative Innovation Center of Deep Sea Biology, Xiamen, 361005, China.
authors.forename: Guizhen
authors.initials: G
authors.lastname: Li
authors.forename: Qiliang
authors.initials: Q
authors.lastname: Lai
authors.forename: Fengqin
authors.initials: F
authors.lastname: Sun
authors.forename: Yaping
authors.initials: Y
authors.lastname: Du
authors.forename: Xiupian
authors.initials: X
authors.lastname: Liu
authors.forename: Guangyu
authors.initials: G
authors.lastname: Li
authors.forename: Yunbiao
authors.initials: Y
authors.lastname: Xie
authors.forename: Zongze
authors.initials: Z
authors.lastname: Shao
mesh_terms: D001267:Atlantic Ocean; D001482:Base Composition; D016000:Cluster Analysis; D003600:Cytosol / Q000737:chemistry; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis; D008124:Locomotion; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010743:Phospholipids / Q000032:analysis; D010802:Phylogeny; D011809:Quinones / Q000032:analysis; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D041902:Rhodobacteraceae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D012623:Seawater / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D012965:Sodium Chloride / Q000378:metabolism; D013696:Temperature
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D010743:Phospholipids; D011809:Quinones; D012336:RNA, Ribosomal, 16S; D012965:Sodium Chloride