Mucibacter soli gen. nov., sp. nov., a new member of the family Chitinophagaceae producing mucin

Min-Kyeong Kim; Sewook Park; Tae-Su Kim; Yochan Joung; Ji-Hye Han; Seung Bum Kim

doi:10.1007/s12275-019-8512-1

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Mucibacter soli gen. nov., sp. nov., a new member of the family Chitinophagaceae producing mucin: Min-Kyeong Kim ¹, Sewook Park ^1,2, Tae-Su Kim ^1,3, Yochan Joung ^1,4, Ji-Hye Han ^1,5, Seung Bum Kim ¹; Journal of Microbiology 2019;57(5):356-361.
DOI: https://doi.org/10.1007/s12275-019-8512-1
Published online: February 22, 2019

¹Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Republic of Korea, ²Food Microbiology Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju 28159, Republic of Korea, ³Clinical Drug Manufacturing Center, Osong Medical Innovation Foundation, Cheongju 28160, Republic of Korea, ⁴Department of Biology, Inha University, Incheon 22212, Republic of Korea, ⁵Bacterial Resources Research Team, Freshwater Bioresources Research Division, Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea¹Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Republic of Korea, ²Food Microbiology Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju 28159, Republic of Korea, ³Clinical Drug Manufacturing Center, Osong Medical Innovation Foundation, Cheongju 28160, Republic of Korea, ⁴Department of Biology, Inha University, Incheon 22212, Republic of Korea, ⁵Bacterial Resources Research Team, Freshwater Bioresources Research Division, Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea

Corresponding author: Seung Bum Kim , Tel: +82-42-821-6412,

Received: 17 September 2018 • Accepted: 19 November 2018

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Abstract

A Gram-stain-negative, mucus-forming, motile by gliding, non-spore-forming and short rod-shaped bacterial strain designated R1-15T was isolated from soil and its taxonomic position was evaluated using a polyphasic approach. Strain R1-15T grew at 15–37°C (optimum, 30°C), at pH 6–7 (optimum, pH 6) and in the presence of 0–1% (w/v) NaCl (optimum, 0%) on 0.1X TSA. On the basis of 16S rRNA gene sequence similarity, the novel strain was assigned to the family Chitinophagaceae of the phylum Bacteroidetes, and its closest related taxa were species of the genera Taibaiella (88.76– 90.02% sequence similarity), Lacibacter (89.24–90.00%), Chitinophaga (88.61–89.76%), and Terrimonas (89.04%). Flexirubin- type pigments were produced. The only isoprenoid quinone was MK-7, and the major polar lipid was phosphatidylethanolamine. Based on whole genome comparisons between the strain R1-15T and the type strains of relatives, the orthologous average nucleotide identity values were 66.9– 67.0%. The DNA G+C content of strain R1-15T was 43.8 mol%. The combination of phylogenetic, chemotaxonomic and phenotypic data clearly supported separation of strain R1-15T from related taxa, and thus the name Mucibacter soli gen. nov., sp. nov. is proposed. The type strain is R1-15T (= KCTC 62274T = JCM 31190T).

Keywords: Mucibacter soli;Chitinophagaceae;mucin;soil

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Mucibacter soli gen. nov., sp. nov., a new member of the family Chitinophagaceae producing mucin

J. Microbiol. 2019;57(5):356-361. Published online February 22, 2019

DOI: https://doi.org/10.1007/s12275-019-8512-1

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