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Ulvibacterium marinum gen. nov., sp. nov., a novel marine bacterium of the family Flavobacteriaceae, isolated from a culture of the green alga Ulva prolifera

Abstract

A Gram-stain negative, aerobic, rod-shaped, and non-motile bacterium, designated strain CCMM003T, was isolated from a culture of the green alga Ulva prolifera. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain CCMM003T belongs to the family Flavobacteriaceae and exhibits a close relationship to Pseudozobellia thermophila DSM 19858T (92.5%). Optimal growth occurred in the presence of 4% (w/v) NaCl, at pH 7.0 and 30 °C. The polar lipids of strain CCMM003T consisted of phosphatidylethanolamine and six unidentified lipids. The predominant isoprenoid quinone was MK-6. The major fatty acids were iso-C15:0, iso-C15:1 G, iso-C17:0 3-OH and summed feature 3 (C16:1ω7c and/or iso-C15:0 2-OH). The DNA G + C content of strain CCMM003T calculated on the basis of the genome sequence was 41.2 mol% and the genome size was 5.9 Mbp. On the basis of data from this polyphasic study, strain CCMM003T is considered to represent a novel genus and species of the family Flavobacteriaceae, for which the name Ulvibacterium marinum gen. nov., sp. nov. is proposed. The type strain is CCMM003T (= MCCC 1K03244T =KCTC 52639T).

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Acknowledgements

We are grateful to the Marine Culture Collection of China for analysing the genome of the type strain.

Funding

This work was supported by the open task of Qingdao National Laboratory for Marine Science and Technology (QNLM2016ORP0311), the National Key Research and Development Program of China (2016YFA0601402), the CNOOC Tianjin project (CNOOC-KJ 125 FZDXM 00TJ 001-2014) and Natural Science Foundation of China (no. 41876174, 31700104). This study is a contribution to the international IMBER project.

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YZ: Conception or design of the work. ZZ, ZH, LT and ZW: Data collection. YZ and ZZ: Data analysis and interpretation. ZZ: Drafting the article. YZ: Critical revision of the article. ZZ, ZH, LT, ZW and YZ: Final approval of the version to be published. ZZ and ZH: Revising the manuscript.

Corresponding author

Correspondence to Yongyu Zhang.

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The authors declare that there are no conflicts of interest.

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This article does not contain any studies with human participants and/or animals performed by any of the authors.

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The GenBank accession numbers for the 16S rRNA gene and the genome sequences of Ulvibacterium marinum CCMM003T are KY060010 and RBCJ01000000, respectively.

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Zhang, Z., Hu, Z., Tang, L. et al. Ulvibacterium marinum gen. nov., sp. nov., a novel marine bacterium of the family Flavobacteriaceae, isolated from a culture of the green alga Ulva prolifera. Antonie van Leeuwenhoek 112, 1077–1085 (2019). https://doi.org/10.1007/s10482-019-01239-x

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  • DOI: https://doi.org/10.1007/s10482-019-01239-x

Keywords

  • Polyphasic taxonomy
  • Ulvibacterium marinum gen. nov.
  • Ulva prolifera