Description of Polaribacter batillariae sp. nov., Polaribacter cellanae sp. nov., and Polaribacter pectinis sp. nov., novel bacteria isolated from the gut of three types of South Korean shellfish

Su-Won Jeong; Jeong Eun Han; June-Young Lee; Ji-Ho Yoo; Do-Yeon Kim; In Chul Jeong; Jee-Won Choi; Yun-Seok Jeong; Jae-Yun Lee; So-Yeon Lee; Euon Jung Tak; Hojun Sung; Hyun Sik Kim; Pil Soo Kim; Dong-Wook Hyun; Jin-Woo Bae

doi:10.1007/s12275-022-1604-3

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Description of Polaribacter batillariae sp. nov., Polaribacter cellanae sp. nov., and Polaribacter pectinis sp. nov., novel bacteria isolated from the gut of three types of South Korean shellfish: Su-Won Jeong ¹, Jeong Eun Han ¹, June-Young Lee ², Ji-Ho Yoo ¹, Do-Yeon Kim ¹, In Chul Jeong ¹, Jee-Won Choi ¹, Yun-Seok Jeong ¹, Jae-Yun Lee ², So-Yeon Lee ¹, Euon Jung Tak ², Hojun Sung ², Hyun Sik Kim ², Pil Soo Kim ², Dong-Wook Hyun ¹, Jin-Woo Bae ^1,2; Journal of Microbiology 2022;60(6):576-584.
DOI: https://doi.org/10.1007/s12275-022-1604-3
Published online: April 18, 2022

¹Department of Biology and Department of Biomedical and Pharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea, ²Department of Life and Nanopharmaceutical Sciences and Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea¹Department of Biology and Department of Biomedical and Pharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea, ²Department of Life and Nanopharmaceutical Sciences and Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea

Corresponding author: Jin-Woo Bae , Tel: +82-2-961-2312;,

Received: 23 November 2021 • Revised: 21 February 2022 • Accepted: 2 March 2022

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Abstract

Three aerobic, Gram-negative, and rod-shaped bacterial strains, designated strains G4M1T, SM13T, and L12M9T, were isolated from the gut of Batillaria multiformis, Cellana toreuma, and Patinopecten yessoensis collected from the Yellow Sea in South Korea. All the strains grew optimally at 25°C, in the presence of 2% (w/v) NaCl, and at pH 7. These three strains, which belonged to the genus Polaribacter in the family Flavobacteriaceae, shared < 98.8% in 16S rRNA gene sequence and < 86.68% in whole-genome sequence with each other. Compared with the type strains of Polaribacter, isolates showed the highest sequence similarity to P. haliotis KCTC 52418T (< 98.68%), followed by P. litorisediminis KCTC 52500T (< 98.13%). All the strains contained MK-6 as their predominant menaquinone and iso-C15:0 as their major fatty acid. Moreover, all the strains had phosphatidylethanolamine as their polar lipid component. In addition, strain G4M1T had two unidentified lipids and three unidentified aminolipids, strain SM13T had three unidentified lipids and three unidentified aminolipids, and strain L12M9T had three unidentified lipids and one unidentified aminolipid. The DNA G + C contents of strains G4M1T, SM13T, and L12M9T were 31.0, 30.4, and 29.7 mol%, respectively. Based on phenotypic, phylogenetic, chemotaxonomic, and genotypic findings, strains G4M1T (= KCTC 82388T = DSM 112372T), SM13T (= KCTC 82389T = DSM 112373T), and L12M9T (= KCTC 62751T = DSM 112374T) were classified into the genus Polaribacter as the type strains of novel species, for which the names Polaribacter batillariae sp. nov., Polaribacter cellanae sp. nov., and Polaribacter pectinis sp. nov., respectively, have been proposed.

Keywords: average amino acid identity;comparative genomics;phylogeny;software suite

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Description of Polaribacter batillariae sp. nov., Polaribacter cellanae sp. nov., and Polaribacter pectinis sp. nov., novel bacteria isolated from the gut of three types of South Korean shellfish

J. Microbiol. 2022;60(6):576-584. Published online April 18, 2022

DOI: https://doi.org/10.1007/s12275-022-1604-3

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