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Shewanella seohaensis sp. nov., isolated from a tidal flat sediment

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Abstract

A Gram-negative, motile and rod-shaped bacterial strain, designated S7-3T, was isolated from a tidal flat sediment at Saemankum on the western coast of Korea. Phylogenetic analyses based on 16S rRNA gene and gyrB sequences showed that strain S7-3T belonged to the genus Shewanella, clustering with Shewanella decolorationis S12T. Strain S7-3T exhibited 98.8 % 16S rRNA gene sequence similarity and 96.8 % gyrB sequence similarity to S. decolorationis S12T, respectively. The 16S rRNA gene sequence similarity values between strain S7-3T and other members of the genus Shewanella were in the range of 93.0–98.0 %. Strain S7-3T contained simultaneously both menaquinones (MK) and ubiquinones (Q); the predominant menaquinone was MK-7 and the predominant ubiquinones were Q-7 and Q-8. The fatty acid profiles of strain S7-3T and S. decolorationis JCM 21555T were similar; major components were C17:1 ω8c, iso-C15:0 and iso-C15:0 2-OH and/or C16:1 ω7c. The DNA G+C content of strain S7-3T was 51.8 mol% and its mean DNA–DNA relatedness value with S. decolorationis JCM 21555T was 43 %. Differential phenotypic properties of strain S7-3T, together with the phylogenetic and genetic distinctiveness, revealed that this strain is distinguishable from recognized Shewanella species. On the basis of the data presented, strain S7-3T is considered to represent a novel Shewanella species, for which the name Shewanella seohaensis sp. nov. is proposed. The type strain is S7-3T (=KCTC 23556T = CCUG 60900T).

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Acknowledgements

This work was supported by the Program for Collection, Management and Utilization of Biological Resources (grant M10867010003) and BK 21 program from the Ministry of Education, Science and Technology (MEST) of the Republic of Korea.

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Authors and Affiliations

  1. Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, South Korea

    Jung-Hoon Yoon

  2. Korea Research Institute of Bioscience and Biotechnology (KRIBB), P.O. Box 115, Yuseong, Daejeon, South Korea

    Sooyeon Park, Yong-Taek Jung & Jung-Sook Lee

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  1. Jung-Hoon Yoon
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  2. Sooyeon Park
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  3. Yong-Taek Jung
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  4. Jung-Sook Lee
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Correspondence to Jung-Hoon Yoon.

Additional information

The GenBank accession numbers of the 16S rRNA gene sequence and gyrB sequence of Shewanella seohaensis S7-3T are GU944672 and GU944673, respectively.

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Yoon, JH., Park, S., Jung, YT. et al. Shewanella seohaensis sp. nov., isolated from a tidal flat sediment. Antonie van Leeuwenhoek 102, 149–156 (2012). https://doi.org/10.1007/s10482-012-9722-2

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