Article
Microbiology
Juseok Kim, Hye Seon Song, Joon Yong Kim, Tae Woong Whon, Won-Hyong Chung, Young -Do Nam, Yoon-E Choi, Seong Woon Roh
Summary: A novel bacterial strain, CBA7301T, was isolated from human faeces and identified as a member of the genus Bacteroides. It showed 96.2% similarity in 16S rRNA gene sequence with its closest related species, Bacteroides faecichinchillae JCM 17102T. CBA7301T is a Gram-stain-negative, strictly anaerobic, rod-shaped bacterium that grows optimally at 30-35°C, pH 7.0, and 0.5% NaCl.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Microbiology
Yajun Ge, Gui Zhang, Jing Yang, Xin-He Lai, Dong Jin, Shan Lu, Ji Pu, Ying Huang, Xuelian Luo, Han Zheng, Xiaoyan Zhang, Jianguo Xu
Summary: Four unknown strains isolated from fresh feces of healthy humans in PR China have been identified as two novel species in the genus Bacteroides, named Bacteroides luhongzhouii sp. nov. and Bacteroides zhangwenhongii sp. nov. The strains exhibited distinct phenotypic, biochemical, and genetic differences from their closest relatives, suggesting they represent unique taxa within the genus.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Jeong Eun Bak, Byeong Seob Oh, Seoung Woo Ryu, Seung Yeob Yu, Won Jung Choi, Ji-Sun Kim, Jung-Sook Lee, Seung-Hwan Park, Se Won Kang, Jiyoung Lee, Mi-Kyung Lee, Chan Seok Yun, Won Yong Jung, Jo Eun Kim, Eun Seok Cho, Hyeun Bum Kim, Jae-Kyung Kim, Ju-Hoon Lee, Ju Huck Lee
Summary: A Gram-negative, obligate anaerobic, non-motile, non-spore-forming, rod-shaped bacterial strain AGMB00274(T) was isolated from swine faeces. It belonged to the genus Parabacteroides, with the highest similarity to Parabacteroides johnsonii DSM 18315(T) (sequence similarity of 94.9%). The strain was proposed as a novel species named Parabacteroides faecalis sp. nov. with the type strain AGMB00274(T) (= KCTC 25286(T) = GDMCC 1.2742(T)).
CURRENT MICROBIOLOGY
(2023)
Article
Microbiology
Ji Young Choi, Seung-Hyeon Choi, Jam-Eon Park, Ji-Sun Kim, Jiyoung Lee, Mi-Kyung Lee, Jung-Sook Lee, Ju Huck Lee, Hyunjung Jung, Tai-Young Hur, Hyeun Bum Kim, Ju-Hoon Lee, Jae-Kyung Kim, Se Won Kang, Seung-Hwan Park
Summary: An obligately anaerobic, non-motile, Gram-negative and rod-shaped strain (AGMB03916T) was isolated from faeces. It belongs to the genus Phocaeicola and is closely related to Phocaeicola plebeius and Phocaeicola coprocola. The strain is able to grow at 30-45 degrees C and pH 6-9, producing acetate as the major end product of metabolism.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Immunology
Yuyuan Huang, Suping Zhang, Yuanmeihui Tao, Jing Yang, Shan Lu, Dong Jin, Ji Pu, Wenbo Luo, Han Zheng, Liyun Liu, Jia-fu Jiang, Jianguo Xu
Summary: Four novel strains of Gram-staining-positive, aerobic, non-motile, circle-shaped bacteria were isolated from bat feces in South China. These strains belong to the genus Ornithinimicrobium and were named Ornithinimicrobium sufpigmenti and Ornithinimicrobium faecis. This discovery is significant for understanding the characteristics and diversity of these bacteria.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2023)
Article
Microbiology
Han Sol Kim, Ji-Sun Kim, Min Kuk Suh, Mi Kyung Eom, Ju Huck Lee, Seung-Hwan Park, Se Won Kang, Dong Ho Lee, Hyuk Yoon, Je Hee Lee, Jung-Sook Lee
Summary: Two similar anaerobic bacteria were isolated from the feces of two Korean individuals. They belong to the genus Bacteroides and have the ability to utilize complex polysaccharides that cannot be digested by humans.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Zhu-Xiang Liu, Jin-Hua Chen, Ling-Ling Yang, Yu-Zhou Feng, Li-Ying Deng, Jian-Wu He, Shu-Kun Tang, Yi-Guang Chen
Summary: A new moderately halophilic, Gram-stain-negative bacterium, Halomonas faecis sp. nov., was isolated from human faeces. It was able to grow in complex media with NaCl concentrations ranging from 0.5% to 18%, with optimum growth at pH 7-8 and 30 degrees C.
Article
Microbiology
Boram Seo, Kyungchan Jeon, Inwoo Baek, Yung Mi Lee, Kiwoon Baek, GwangPyo Ko
Summary: Strain SNUG30386(T) is an obligately anaerobic, Gram-stain-positive and spore-forming bacterium belonging to the family Lachnospiraceae. Phylogenetic analysis based on 16S rRNA gene sequences suggests that it represents a novel species within the genus Clostridium, which has been proposed as Clostridium fessum sp. nov.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Atsushi Hisatomi, Moriya Ohkuma, Mitsuo Sakamoto
Summary: Two strains of obligately anaerobic, Gram-stain-positive, small-chain coccobacilli were isolated from faecal samples of healthy Japanese humans and named Sellimonas catena sp. nov.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Microbiology
Xin-Wei Sun, Rashidin Abdugheni, Hao-Jie Huang, Yu-Jing Wang, Min-Zhi Jiang, Chang Liu, Nan Zhou, He Jiang, Shuang-Jiang Liu
Summary: A novel species of the genus Bacteroides, named Bacteroides propionicigenes, was isolated from the feces of a healthy adult in China. The strain showed distinct phenotypic and genotypic characteristics, supporting its classification as a new species.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Rashidin Abdugheni, Yu-Jing Wang, Dan-Hua Li, Meng-Xuan Du, Chang Liu, Nan Zhou, Shuang-Jiang Liu
Summary: A new anaerobic and motile bacterium strain NSJ-9(T) was isolated from human faeces. It belongs to a new genus in the family Lachnospiraceae based on its cellular and genetic characteristics, showing high similarity to some known species.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Yuanqiang Zou, Xiaoqian Lin, Wenbin Xue, Li Tuo, Ming-Sheng Chen, Xiao-Hui Chen, Cheng-hang Sun, Feina Li, Shao-wei Liu, Ying Dai, Karsten Kristiansen, Liang Xiao
Summary: Two novel anaerobic strains, designated AF52-21(T) and CM04-06(T), were isolated from faeces of healthy Chinese donors using a pure culture strategy. Phylogenetic analysis revealed that these strains clustered with Faecalibacterium species, supporting their recognition as two new species within the genus. Genomic analysis showed differences below the proposed species threshold, confirming their uniqueness.
SCIENTIFIC REPORTS
(2021)
Article
Microbiology
Claire Belkhou, Raul Tito Tadeo, Rodrigo Bacigalupe, Mireia Valles-Colomer, Samuel Chaffron, Marie Joossens, Alexandra Obregon, Luis Marin Reyes, Omar Trujillo, Geert R. B. Huys, Jeroen Raes
Summary: A novel Treponema species, named Treponema peruense, was isolated from the fecal sample of an individual residing in a remote Amazonian community in Peru. This bacterium represents the first commensal Treponema isolated from human fecal microbiota of remote populations.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Lu Bai, Jayoung Paek, Hongik Kim, Si Hyun Kim, Jeong Hwan Shin, Joong-Ki Kook, Young Hyo Chang
Summary: A rod-shaped, aerotolerant, Gram-stain-positive bacterium strain YH-lim2214T isolated from pig faeces showed the highest similarity to Limosilactobacillus pontis KCTC 25258T with 98.0% similarity based on 16S rRNA gene sequence analysis. The average nucleotide identity and average amino acid identity values between YH-lim2214T and the most closely related strain Lm. pontis KCTC 25258T were 81.4 and 81.3%, respectively. The chemotaxonomic, phenotypic and phylogenetic properties suggest that strain YH-lim2214T represents a novel taxon, proposed as Limosilactobacillus kribbianus sp. nov. (YH-lim2214T = KCTC 25572T = JCM 35701T).
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Microbiology
Ji Young Choi, Jam-Eon Park, Seung-Hyeon Choi, Ji-Sun Kim, Jung-Sook Lee, Ju Huck Lee, Hyeun Bum Kim, Ju-Hoon Lee, Jae-Kyung Kim, Se Won Kang, Seung-Hwan Park
Summary: A new bacterium belonging to the genus Succinivibrio, named Succinivibrio feacicola sp. nov., was isolated from feces of a cow. It is an obligately anaerobic, Gram-stain-negative helical rod-shaped bacterium with a genomic DNA G+C content of 35.9 mol%. It can grow at temperatures of 30-40 degrees C and pH 6-7, and in the presence of 0.5-1.0% (w/v) NaCl.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Changsu Lee, Hye Seon Song, Se Hee Lee, Joon Yong Kim, Jin-Kyu Rhee, Seong Woon Roh
Summary: In this study, three facultatively oligotrophic haloarchaea were isolated from solar salt and their complete genomes were sequenced, revealing the presence of carbohydrate-active enzyme genes and stress-tolerance protein genes that may have industrial applications. The genome data generated will facilitate further research on halophilic strains and their potential industrial uses.
ARCHIVES OF MICROBIOLOGY
(2021)
Review
Microbiology
Tae Woong Whon, Na-Ri Shin, Joon Yong Kim, Seong Woon Roh
Summary: Recent advances in environmental microbial genomics have improved our understanding of the interactions between microbial communities and their niche in the host gut; integration of various omics data to study the gut microbiome has become increasingly common, although downstream analysis and interpretation of complex omics data remain challenging. Studies have explored gut microbiome characteristics using omics approaches, and recent discussions have focused on analytics programs and advanced techniques for further utilization of omics data.
JOURNAL OF MICROBIOLOGY
(2021)
Article
Microbiology
Tae Woong Whon, Hyun Sik Kim, Na-Ri Shin, Hojun Sung, Min-Soo Kim, Joon Yong Kim, Woorim Kang, Pil Soo Kim, Dong-Wook Hyun, Hoon Je Seong, Woo Jun Sul, Seong Woon Roh, Jin-Woo Bae
Summary: Neonatal calf diarrhea is a major cause of economic loss for cattle producers worldwide, with multifactorial etiology making disease control challenging. The study reveals microbial compositional and functional dysbiosis in the gut of diarrheic calves, potentially contributing to the onset of diarrhea. Additionally, it suggests that prolonged expansion of nontoxigenic Enterobacteriaceae in the gut may play a role in the development of calf diarrhea.
Article
Microbiology
Juseok Kim, Joon Yong Kim, Hye Seon Song, Yeon Bee Kim, Tae Woong Whon, Seung Woo Ahn, Se Hee Lee, SeungRan Yoo, Yu Jin Kim, Jinjong Myoung, Yoon-E Choi, Hong-Seok Son, Seong Woon Roh
Summary: The novel species Anaerocolumna sedimenticola sp. nov. (CBA3638(T)) was isolated from the Geum River sediment in South Korea and belongs to the genus Anaerocolumna. The strain exhibits Gram-stain-positive, anaerobic characteristics with specific cell size and morphology. Detailed information on the genome characteristics and growth conditions of this strain are also provided.
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
(2021)
Article
Microbiology
Eui-Sang Cho, In-Tae Cha, Seong Woon Roh, Myung-Ji Seo
Summary: Three novel halophilic archaea, isolated from seawater and sediment near Yeoungheungdo Island in Korea, belong to the genus Haloferax, with similarities and differences in their genetic properties. They thrive in high-salt environments and exhibit specific physiological and metabolic characteristics.
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
(2021)
Article
Food Science & Technology
Hye Seon Song, Se Hee Lee, Seung Woo Ahn, Joon Yong Kim, Jin-Kyu Rhee, Seong Woon Roh
Summary: The main ingredients of kimchi play a crucial role in determining the microbial community and metabolite composition during food fermentation. Microorganisms such as Leuconostoc gelidum, Weissella kandleri, and Lactobacillus sakei groups were found to be primarily distributed in kimchi cabbage and young radish-based foods. The metabolite profiles varied depending on the sample type, suggesting that the main ingredients significantly impact the fermentation process.
FOOD RESEARCH INTERNATIONAL
(2021)
Correction
Food Science & Technology
Hye Seon Song, Se Hee Lee, Seung Woo Ahn, Joon Yong Kim, Jin-Kyu Rhee, Seong Woon Roh
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Food Science & Technology
Joon Yong Kim, Seong-Eun Park, Eun-Ju Kim, Seung-Ho Seo, Tae Woong Whon, Kwang-Moon Cho, Sun Jae Kwon, Seong Woon Roh, Hong-Seok Son
Summary: This study investigated the succession of microorganisms and changes in metabolites during long-term fermentation of kimchi. The dominant taxa shifted from Leuconostoc and Weissella in the early stages to Latilactobacillus and Levilactobacillus in the middle and late stages. The metabolite analysis showed that about half of the metabolites were produced within the first 15 days of fermentation. These findings highlight the dynamic nature of microbiota and the evolving composition of metabolites during long-term fermentation.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Food Science & Technology
Namhee Kim, Jieun Lee, Hye Seon Song, Young Joon Oh, Min-Sung Kwon, Misun Yun, Seul Ki Lim, Hyo Kyeong Park, Young Seo Jang, Sulhee Lee, Sang-Pil Choi, Seong Woon Roh, Hak-Jong Choi
Summary: This study found that kimchi can suppress obesity-induced inflammation and exert its effects by changing gut microbiota composition and short-chain fatty acids production.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Food Science & Technology
Mi-Ja Jung, Juseok Kim, Se Hee Lee, Tae Woong Whon, Hojun Sung, Jin-Woo Bae, Yoon-E Choi, Seong Woon Roh
Summary: This study reveals the ecological role of LAB starters in the fermentation of kimchi and investigates the potential impact of bacteriophages on the fermentation properties of kimchi.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Biotechnology & Applied Microbiology
Chang Hee Jeong, Joon Yong Kim, Young Joon Oh, Hye In Ko, Seong Woon Roh, Sung Wook Hong, Hyuk Cheol Kwon, Sung Gu Han, Tae Woon Kim
Summary: This study assessed the safety of white colony-forming yeasts (WCFYs), finding that they did not induce toxic responses in cell and animal experiments, and genomic analysis showed that one of the yeasts did not harbor genes related to toxicity and antimicrobial resistance.
Article
Microbiology
Juseok Kim, Seong Woo Ahn, Joon Yong Kim, Tae Woong Whon, Seul Ki Lim, Byung Hee Ryu, Nam Soo Han, Hak-Jong Choi, Seong Woon Roh, Se Hee Lee
Summary: This study found that the ingestion of lactic acid bacteria can alleviate the ill effects of alcoholic liver disease, including inflammation, liver damage, gut dysbiosis, and abnormal intestinal nutrient metabolism.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Hae-In Joe, Jee-Won Choi, June-Young Lee, Hojun Sung, Su-Won Jeong, Yun-Seok Jeong, Jae-Yun Lee, Jin-Woo Bae
Summary: Three new bacterial strains, 321(T), 335(T), and 353(T), were isolated from the intestines of Aegosoma sinicum larvae collected in Paju-Si, South Korea. These strains belong to the genus Luteibacter and are characterized as Gram-negative, obligate aerobes with rod-shaped cells and a single flagellum. Through genomic analysis, it is determined that these strains are novel species within the genus Luteibacter.
JOURNAL OF MICROBIOLOGY
(2023)
Article
Microbiology
Hye Seon Song, Juseok Kim, Yeon Bee Kim, Se Hee Lee, Tae Woong Whon, Seong Woon Roh
Summary: Two novel halophilic archaeal strains were isolated from solar salt in South Korea. Through genetic, physiological, and biochemical analyses, they were found to represent a new genus and species in the family Halobacteriaceae.
JOURNAL OF MICROBIOLOGY
(2022)
Article
Microbiology
Yujin Kim, Yeon Bee Kim, Juseok Kim, Joon Yong Kim, Tae Woong Whon, Won-Hyong Chung, Eun-Ji Song, Young-Do Nam, Se Hee Lee, Seong Woon Roh
Summary: Two novel bacterial strains, CBA3104(T) and CBA3105(T), isolated from kimchi, were identified as a new species of Brachybacterium genus (Brachybacterium kimchii sp. nov.) and a new subspecies of B. halotolerans (B. halotolerans subsp. kimchii subsp. nov.), respectively. These strains showed differences in growth conditions and genetic similarity.
JOURNAL OF MICROBIOLOGY
(2022)