Journal of Microbiology

Research Article

Virgibacillus saliphilus sp. nov. and Virgibacillus salidurans sp. nov., isolated from kimchi: Young Joon Oh, Joon Yong Kim, Min-Sung Kwon, Sulhee Lee, Sang-Pil Choi, Hak-Jong Choi; J. Microbiol. 2025;63(1):e.2501001. Published online January 24, 2025; DOI: https://doi.org/10.71150/jm.2501001

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Abstract PDF Supplementary Material: This study aimed to provide a taxonomic description of two bacterial strains, NKC19-3^T and NKC19-16^T, isolated from commercially produced kimchi obtained from various regions within the Republic of Korea. Both strains were rod-shaped, gram-stain-positive, facultatively anaerobic, and displayed positive reactions for oxidase and catalase. Additionally, these bacteria were motile, halophilic (salt-tolerant), and proliferated under alkaline conditions. Genetically, both strains showed 98.0% similarity in their 16S rRNA gene sequences and were most closely related to Virgibacillus natechei FarD^T, with 96.5 and 96.8% sequence similarity, respectively. ANI values indicated that the two novel strains were distinct from V. natechei FarD^T, as they were below the species demarcation threshold. The ANI value between strains NKC19-3ᵀ and NKC19-16ᵀ was 84.64–84.75%, and the values between these strains and other related strains did not exceed 80.0%, further supporting their classification as novel species. Phylogenetic analysis revealed that strains NKC19-3^T and NKC19-16^T formed a distinct branch within the genus Virgibacillus, clearly distinguishing them from other species in the same genus. Regarding genomic characteristics, the GC content was 38.9% for strain NKC19-3^T and 39.5% for strain NKC19-16^T. The genome of strain NKC19-3^T had a size of approximately 4.1 Mb and contained 3,785 protein-coding genes (CDSs). Strain NKC19-16^T had a slightly smaller genome, approximately 3.9 Mb in size and harbored 3,726 CDSs. The polar lipid profiles of strains NKC19-3ᵀ and NKC19-16ᵀ included diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), glycolipids (GL), and an unidentified lipid (L). The predominant fatty acids of both strains were anteiso-C_15:0 and anteiso-C_17:0. Considering the comprehensive analysis encompassing phenotypic, genomic, phylogenetic, and chemotaxonomic data, strains NKC19-3^T and NKC19-16^T are proposed to represent two novel species within the genus Virgibacillus. The suggested names for these species are Virgibacillus saliphilus sp. nov. (type strain NKC19-3^T, also referred to as KACC 22326^T and DSM 112707^T) and Virgibacillus salidurans sp. nov. (type strain NKC19-16^T, also referred to as KACC 22327^T and DSM 112708^T).

Journal Articles

Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov., two novel species of the family Bacillaceae isolated from kimchi: Young Joon Oh , Joon Yong Kim , Seul Ki Lim , Min-Sung Kwon , Hak-Jong Choi; J. Microbiol. 2021;59(5):460-466. Published online April 28, 2021; DOI: https://doi.org/10.1007/s12275-021-0513-1

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To date, all species in the genus Salicibibacter have been isolated in Korean commercial kimchi. We aimed to describe the taxonomic characteristics of two strains, NKC5-3T and NKC21-4T, isolated from commercial kimchi collected from various regions in the Republic of Korea. Cells of these strains were rod-shaped, Gram-positive, aerobic, oxidase- and catalase- positive, non-motile, halophilic, and alkalitolerant. Both strains, unlike other species of the genus Salicibibacter, could not grow without NaCl. Strains NKC5-3T and NKC21-4T could tolerate up to 25.0% (w/v) NaCl (optimum 10%) and grow at pH 7.0–10.0 (optimum 8.5) and 8.0–9.0 (optimum 8.5), respectively; they showed 97.1% 16S rRNA gene sequence similarity to each other and were most closely related to S. kimchii NKC1-1T (97.0% and 96.8% similarity, respectively). The genome of strain NKC5-3T was nearly 4.6 Mb in size, with 4,456 protein-coding sequences (CDSs), whereas NKC21-4T genome was nearly 3.9 Mb in size, with 3,717 CDSs. OrthoANI values between the novel strains and S. kimchii NKC1-1T were far lower than the species demarcation threshold. NKC5-3T and NKC21-4T clustered together to form branches that were distinct from the other Salicibibacter species. The major fatty acids in these strains were anteiso-C15:0 and anteiso-C17:0, and the predominant menaquinone was menaquinone-7. The polar lipids of NKC5-3T included diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), and five unidentified phospholipids (PL), and those of NKC21-4T included DPG, PG, seven unidentified PLs, and an unidentified lipid. Both isolates had DPG, which is the first case in the genus Salicibibacter. The genomic G + C content of strains NKC5-3T and NKC21-4T was 44.7 and 44.9 mol%, respectively. Based on phenotypic, genomic, phylogenetic, and chemotaxonomic analyses, strains NKC5-3T (= KACC 22040T = DSM 111417T) and NKC21-4T (= KACC 22041T = DSM 111418T) represent two novel species of the genus Salicibibacter, for which the names Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov. are proposed.

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Valid publication of new names and new combinations effectively published outside the IJSEM
Aharon Oren, George M. Garrity
International Journal of Systematic and Evolutionary Microbiology .2021;[Epub] CrossRef

Lentibacillus cibarius sp. nov., isolated from kimchi, a Korean fermented food: Young Joon Oh , Joon Yong Kim , Hee Eun Jo , Hyo Kyeong Park , Seul Ki Lim , Min-Sung Kwon , Hak-Jong Choi; J. Microbiol. 2020;58(5):387-394. Published online April 11, 2020; DOI: https://doi.org/10.1007/s12275-020-9507-7

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Abstract

Two bacterial strains designated NKC220-2T and NKC851-2 were isolated from commercial kimchi from different areas in Korea. The strains were Gram-positive, aerobic, oxidaseand catalase-positive, rod-shaped, spore-forming, non-motile, and halophilic bacteria. Both strains grew without NaCl, unlike type species in the genus Lentibacillus. The optimal pH for growth was 8.0, higher than that of the type species in the genus Lentibacillus, although growth was observed at pH 5.5–9.0. 16S rRNA gene sequence-based phylogenetic analysis indicated that the two strains (99.3–99.9% similarity) are grouped within the genus Lentibacillus and most closely related to Lentibacillus juripiscarius IS40-3T (97.4–97.6% similarity) isolated from fish sauce in Thailand. OrthoANI value between two novel strains and Lentibacillus lipolyticus SSKP1- 9T (79.5–79.6% similarity) was far lower than the species demarcation threshold. Comparative genomic analysis displayed differences between the two strains as well as among other strains belonging to Lentibacillus. Furthermore, each isolate had strain-specific groups of orthologous genes based on pangenome analysis. Genomic G + C contents of strains NKC- 220-2T and NKC851-2 were 41.9 and 42.2 mol%, respectively. The strains contained meso-diaminopimelic acid in their cell walls, and the major menaquinone was menaquinone-7. Phosphatidylglycerol, diphosphatidylglycerol, and an unidentified glycolipid, aminophospholipid, and phospholipid were the major polar lipid components of both strains. The major cellular fatty acids of the strains were anteiso-C15:0 and anteiso- C17:0. Based on phenotypic, genomic, phylogenetic, and chemotaxonomic features, strains NKC220-2T and NKC851-2 represent novel species of the genus Lentibacillus, for which the name Lentibacillus cibarius sp. nov. is proposed. The type strain is NKC220-2T (= KACC 21232T = JCM 33390T).

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Detection of the Microbial Composition of Some Commercial Fermented Liquid Products via Metagenomic Analysis
Cansu Çelik Doğan, Hafize Tuğba Yüksel Dolgun, Serkan İkiz, Şükrü Kırkan, Uğur Parın
Foods.2023; 12(19): 3538. CrossRef
Lentibacillus daqui sp. nov., isolated from high-temperature Daqu, a starter for production of Chinese Jiang-flavour Baijiu
Yuan Liang, Zhen-Ming Lu, Wei Shi, Lin-Huan Wu, Li-Juan Chai, Xiao-Juan Zhang, Su-Yi Zhang, Song-Tao Wang, Cai-Hong Shen, Zheng-Hong Xu
International Journal of Systematic and Evolutionary Microbiology .2023;[Epub] CrossRef
Occurrence of biogenic amines and their correlation with bacterial communities in the Ivorian traditional fermented fish adjuevan during the storage
Marina Ghislaine Abré, Clémentine Amenan Kouakou-Kouamé, Florent Kouadio N’guessan, Corinne Teyssier, Didier Montet
Folia Microbiologica.2023; 68(2): 257. CrossRef
Description of Corynebacterium poyangense sp. nov., isolated from the feces of the greater white-fronted geese (Anser albifrons)
Qian Liu, Guoying Fan, Kui Wu, Xiangning Bai, Xi Yang, Wentao Song, Shengen Chen, Yanwen Xiong, Haiying Chen
Journal of Microbiology.2022; 60(7): 668. CrossRef
Parasphingorhabdus cellanae sp. nov., isolated from the gut of a Korean limpet, Cellana toreuma
Ji-Ho Yoo, Jeong Eun Han, June-Young Lee, Su-Won Jeong, Yun-Seok Jeong, Jae-Yun Lee, So-Yeon Lee, Hojun Sung, Euon Jung Tak, Hyun Sik Kim, Pil Soo Kim, Jee-Won Choi, Do-Yeon Kim, In Chul Jeong, Do-Hun Gim, Seo Min Kang, Jin-Woo Bae
International Journal of Systematic and Evolutionary Microbiology .2022;[Epub] CrossRef
Isolation and characterization of tick-borne Roseomonas haemaphysalidis sp. nov. and rodent-borne Roseomonas marmotae sp. nov.
Wentao Zhu, Juan Zhou, Shan Lu, Jing Yang, Xin-He Lai, Dong Jin, Ji Pu, Yuyuan Huang, Liyun Liu, Zhenjun Li, Jianguo Xu
Journal of Microbiology.2022; 60(2): 137. CrossRef
The Methods of Digging for “Gold” within the Salt: Characterization of Halophilic Prokaryotes and Identification of Their Valuable Biological Products Using Sequencing and Genome Mining Tools
Jakub Lach, Paulina Jęcz, Dominik Strapagiel, Agnieszka Matera-Witkiewicz, Paweł Stączek
Genes.2021; 12(11): 1756. CrossRef
Lentibacillus saliphilus. sp. nov., a moderately halophilic bacterium isolated from a saltern in Korea
Yun Wang, Gang-Qiang Jiang, Hong-Ping Lin, Peng Sun, Hong-Yan Zhang, Dong-Mei Lu, Li-Yun Wang, Chang-Jin Kim, Shu-Kun Tang
Archives of Microbiology.2021; 203(2): 621. CrossRef
Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov., two novel species of the family Bacillaceae isolated from kimchi
Young Joon Oh, Joon Yong Kim, Seul Ki Lim, Min-Sung Kwon, Hak-Jong Choi
Journal of Microbiology.2021; 59(5): 460. CrossRef
Flaviflexus ciconiae sp. nov., isolated from the faeces of the oriental stork, Ciconia boyciana
Jae-Yun Lee, Woorim Kang, Pil Soo Kim, So-Yeon Lee, Na-Ri Shin, Hojun Sung, June-Young Lee, Ji-Hyun Yun, Yun-Seok Jeong, Jeong Eun Han, Mi-Ja Jung, Dong-Wook Hyun, Hyun Sik Kim, Euon Jung Tak, Jin-Woo Bae
International Journal of Systematic and Evolutionary Microbiology.2020; 70(10): 5439. CrossRef
List of new names and new combinations that have appeared in effective publications outside of the IJSEM and are submitted for valid publication
Aharon Oren, George M. Garrity
International Journal of Systematic and Evolutionary Microbiology .2019;[Epub] CrossRef

Salicibibacter halophilus sp. nov., a moderately halophilic bacterium isolated from kimchi: Young Joon Oh , Joon Yong Kim , Hyo Kyeong Park , Ja-Young Jang , Seul Ki Lim , Min-Sung Kwon , Hak-Jong Choi; J. Microbiol. 2019;57(11):997-1002. Published online October 28, 2019; DOI: https://doi.org/10.1007/s12275-019-9421-z

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Abstract

A Gram-stain-positive, rod-shaped, alkalitolerant, and halophilic bacterium–designated as strain NKC3-5T–was isolated from kimchi that was collected from the Geumsan area in the Republic of Korea. Cells of isolated strain NKC3-5T were 0.5–0.7􍾘μm wide and 1.4–2.8 μm long. The strain NKC3-5T could grow at up to 20.0% (w/v) NaCl (optimum 10%), pH 6.5–10.0 (optimum pH 9.0), and 25–40°C (optimum 35°C). The cells were able to reduce nitrate under aerobic conditions, which is the first report in the genus Salicibibacter. The genome size and genomic G + C content of strain NKC3-5T were 3,754,174 bp and 45.9 mol%, respectively; it contained 3,630 coding sequences, 16S rRNA genes (six 16S, five 5S, and five 23S), and 59 tRNA genes. Phylogenetic analysis based on 16S rRNA showed that strain NKC- 3-5T clustered with bacterium Salicibibacter kimchii NKC1-1T, with a similarity of 96.2–97.6%, but formed a distinct branch with other published species of the family Bacillaceae. In addition, OrthoANI value between strain NKC3-5T and Salicibibacter kimchii NKC1-1T was far lower than the species demarcation threshold. Using functional genome annotation, the result found that carbohydrate, amino acid, and vitamin metabolism related genes were highly distributed in the genome of strain NKC3-5T. Comparative genomic analysis revealed that strain NKC3-5T had 716 pan-genome orthologous groups (POGs), dominated with carbohydrate metabolism. Phylogenomic analysis based on the concatenated core POGs revealed that strain NKC3-5T was closely related to Salicibibacter kimchii. The predominant polar lipids were phosphatidylglycerol and two unidentified lipids. Anteiso- C15:0, iso-C17:0, anteiso-C17:0, and iso-C15:0 were the major cellular fatty acids, and menaquinone-7 was the major isoprenoid quinone present in strain NKC3-5T. Cell wall peptidoglycan analysis of strain NKC3-5T showed that meso-diaminopimelic acid was the diagnostic diamino acid. The phenotypic, genomic, phylogenetic, and chemotaxonomic properties reveal that the strain represents a novel species of the genus Salicibibacter, for which the name Salicibibacter halophilus sp. nov. is proposed, with the type strain NKC3-5T (= KACC 21230T = JCM 33437T).

Citations

Citations to this article as recorded by

Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov., two novel species of the family Bacillaceae isolated from kimchi
Young Joon Oh, Joon Yong Kim, Seul Ki Lim, Min-Sung Kwon, Hak-Jong Choi
Journal of Microbiology.2021; 59(5): 460. CrossRef
The Methods of Digging for “Gold” within the Salt: Characterization of Halophilic Prokaryotes and Identification of Their Valuable Biological Products Using Sequencing and Genome Mining Tools
Jakub Lach, Paulina Jęcz, Dominik Strapagiel, Agnieszka Matera-Witkiewicz, Paweł Stączek
Genes.2021; 12(11): 1756. CrossRef
List of new names and new combinations that have appeared in effective publications outside of the IJSEM and are submitted for valid publication
Aharon Oren, George M. Garrity
International Journal of Systematic and Evolutionary Microbiology .2019;[Epub] CrossRef

Rotavirus-mediated alteration of gut microbiota and its correlation with physiological characteristics in neonatal calves: Ja-Young Jang , Suhee Kim , Min-Sung Kwon , Jieun Lee , Do-Hyeon Yu , Ru-Hui Song , Hak-Jong Choi , Jinho Park; J. Microbiol. 2019;57(2):113-121. Published online November 19, 2018; DOI: https://doi.org/10.1007/s12275-019-8549-1

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32 Crossref

Abstract

Diarrhea is a fatal disease to neonatal calves, and rotavirus is the main pathogen associated with neonatal calf diarrhea. Although previous studies have reported that the gut microbiota is changed in calves during diarrhea, less is known about whether rotavirus infection alters the structure of the gut microbiota. Here, we characterized fecal microbial communities and identified possible relationships between the gut microbiota profiles and physiological parameters. Five fecal specimens of rotavirus-infected calves from 1 to 30 days after birth and five fecal specimens of age-matched healthy calves were used for the microbial community analysis using the Illumina MiSeq sequencer. Rotavirus infection was associated with reduced rotavirus infection significantly reduced the richness and diversity of the bacterial community. Weighted unique fraction metric analysis exhibited significant differences in community membership and structure between healthy and rotavirus-infected calves. Based on relative abundance analysis and linear discriminant analysis effect size, we found that the representative genera from Lactobacillus, Subdoligranulum, Blautia, and Bacteroides were closely related to healthy calves, while the genera Escherichia and Clostridium were closely affiliated to rotavirus-infected calves. Furthermore, canonical correlation analysis and Pearson correlation coefficient results revealed that the increased relative abundances of Lactobacillus, Subdoligranulum, and Bacteroides were correlated with normal levels of physiological characteristics such as white blood cells, blood urea nitrogen, serum amyloid protein A, and glucose concentration in serum. These
results
suggest that rotavirus infection alters the structure of the gut microbiota, correlating changes in physiological

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Virgibacillus kimchii sp. nov., a halophilic bacterium isolated from kimchi: Young Joon Oh , Ja-Young Jang , Seul Ki Lim , Min-Sung Kwon , Jieun Lee , NamHee Kim , Mi-Young Shin , Hyo Kyeong Park , Myung-Ji Seo , Hak-Jong Choi; J. Microbiol. 2017;55(12):933-938. Published online December 7, 2017; DOI: https://doi.org/10.1007/s12275-017-7386-3

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Abstract

A Gram-stain-positive, halophilic, rod-shaped, non-motile, spore forming bacterium, strain NKC1-2T, was isolated from kimchi, a Korean fermented food. Comparative analysis based on 16S rRNA gene sequence demonstrated that the isolated strain was a species of the genus Virgibacillus. Strain NKC1- 2T exhibited high level of 16S rRNA gene sequence similarity with the type strains of Virgibacillus xinjiangensis SL6-1T (96.9%), V. sediminis YIM kkny3T (96.8%), and V. salarius SA-Vb1T (96.7%). The isolate grew at pH 6.5–10.0 (optimum, pH 8.5–9.0), 0.0–25.0% (w/v) NaCl (optimum, 10–15% NaCl), and 15–50°C (optimum, 37°C). The major menaquinone in the strain was menaquinone-7, and the main peptidoglycan of the strain was meso-diaminopimelic acid. The predominant fatty acids of the strain were iso-C14:0, anteisio-C15:0, iso- C15:0, and iso-C16:0 (other components were < 10.0%). The polar lipids consisted of diphosphatidylglycerol and phosphatidylglycerol. The genomic DNA G + C content of NKC1-2T was 42.5 mol%. On the basis of these findings, strain NKC1- 2T is proposed as a novel species in the genus Virgibacillus, for which the name Virgibacillus kimchii sp. nov. is proposed (=KACC 19404T =JCM 32284T). The type strain of Virgibacillus kimchii is NKC1-2T.

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Gracilibacillus kimchii sp. nov., a halophilic bacterium isolated from kimchi§: Young Joon Oh , Hae-Won Lee , Seul Ki Lim , Min-Sung Kwon , Jieun Lee , Ja-Young Jang , Hae Woong Park , Young-Do Nam , Myung-Ji Seo , Hak-Jong Choi; J. Microbiol. 2016;54(9):588-593. Published online August 31, 2016; DOI: https://doi.org/10.1007/s12275-016-6349-4

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Abstract

A novel halophilic bacterium, strain K7T, was isolated from kimchi, a traditional Korean fermented food. The strain is Gram-positive, motile, and produces terminal endospores. The isolate is facultative aerobic and grows at salinities of 0.0–25.0% (w/v) NaCl (optimum 10–15% NaCl), pH 5.5–8.5 (optimum pH 7.0–7.5), and 15–42°C (optimum 37°C). The predominant isoprenoid quinone in the strain is menaquinone- 7 and the peptidoglycan of the strain is meso-diaminopimelic acid. The major fatty acids of the strain are anteisio- C15:0, iso-C15:0, and, C16:0 (other components were < 10.0%), while the major polar lipids are diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, and three unidentified lipids. A phylogenetic analysis of 16S rRNA gene sequence similarity showed that the isolated strain was a cluster of the genus Gracilibacillus. High levels of gene sequence similarity were observed between strain K7T and Gracilibacillus orientalis XH-63T (96.5%), and between the present strain and Gracilibacillus xinjiangensis (96.5%). The DNA G+C content of this strain is 37.7 mol%. Based on these findings, strain K7T is proposed as a novel species: Gracilibacillus kimchii sp. nov. The type strain is K7T (KACC 18669T; JCM 31344T).

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