4.4 Article

Algicella marina gen. nov., sp. nov., a novel marine bacterium isolated from a Pacific red alga

Journal

ARCHIVES OF MICROBIOLOGY
Volume 204, Issue 8, Pages -

Publisher

SPRINGER
DOI: 10.1007/s00203-022-03091-6

Keywords

Algicella marina; Rhodobacteraceae; Marine bacteria; Red alga Tichocarpus crinitus; 16S rRNA gene; Whole genome sequence

Categories

Funding

  1. Ministry of Science and Higher Education, Russian Federation 15 [BRK.21.0004, 075-15-2021-1052]

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A novel Gram-staining negative, strictly aerobic, rod-shaped, and non-motile bacterium, Algicella marina, was isolated from the red alga Tichocarpus crinitus. It belongs to the family Rhodobacteraceae, the order Rhodobacterales, the class Alphaproteobacteria, and the phylum Pseudomonadota.
A novel Gram-staining negative, strictly aerobic, rod-shaped, and non-motile bacterium, designated strain 9Alg 56(T), was isolated from the red alga Tichocarpus crinitus. The phylogenetic analysis based on 16S rRNA gene sequences placed the novel strain within the family Rhodobacteraceae, the order Rhodobacterales, the class Alphaproteobacteria, the phylum Pseudomonadota. The nearest neighbors of the new strain were Pontivivens insulae KCTC 42458(T), Oceanibium sediminis KCTC 62076(T), Halovulum dunhuangense YYQ-30(T) and Monaibacterium marinum C7(T) with 16S rRNA gene sequence similarity of 94.7, 94.4%, 93.1 and 92.7%, respectively. The AAI/ANI/dDDH values between 9Alg 56(T) and the five species of the closest genera (Pontivivens, Oceanibium, Halovulum, Monaibacterium, and 'Oceanomicrobium') were 58.63-63.91%/ 75.91-77.37%/ 19.3-20.4%. The prevalent fatty acids of strain 9Alg 56(T) were C-18:1 omega 7c, C-18:0 and C-14:0 3-OH. The polar lipid profile consisted of phosphatidylethanolamine, phosphatidylglycerol, phosphatidic acid, phosphatidylcholine, and two unidentified lipids. The DNA G+C content of strain 9Alg 56(T) was 61.5 mol%. A combination of the genotypic and phenotypic data showed that the algal isolate represents a novel genus and species, for which the name Algicella marina gen. nov., sp. nov. is proposed. The type strain is 9Alg 56(T) (= KCTC 72005(T) = KMM 6775(T)).

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