Journal of Microbiology

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Staphylococcus parequorum sp. nov. and Staphylococcus halotolerans sp. nov., isolated from traditional Korean soybean foods: Ju Hye Baek, Dong Min Han, Dae Gyu Choi, Chae Yeong Moon, Jae Kyeong Lee, Chul-Hong Kim, Jung-Woong Kim, Che Ok Jeon; J. Microbiol. 2025;63(8):e2503003. Published online August 31, 2025; DOI: https://doi.org/10.71150/jm.2503003; Correction in: J. Microbiol 2025;63(9):e2509100 Correction in: https://doi.org/10.71150/jm.2510101

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Abstract PDF Supplementary Material: Strains Mo2-6^T, S9, KG4-3^T, and 50Mo3-2, identified as coagulase-negative, Gram-stain-positive, halotolerant, non-motile coccoid bacteria, were isolated from traditional Korean soybean foods. Strains Mo2-6^T and S9 were both catalase- and oxidase-negative, whereas KG4-3^T and 50Mo3-2 were catalase-positive but oxidase-negative. The optimal growth conditions for Mo2-6^T and S9 were 30°C, 2% NaCl, and pH 7.0, while KG4-3^T and 50Mo3-2 grew best at 35°C, 2% NaCl, and pH 7.0. All strains contained menaquinone-7 as the predominant isoprenoid quinone, with anteiso-C_15:0 and iso-C_15:0 as the major cellular fatty acids (> 10%). Additionally, anteiso-C_13:0 was a major fatty acid in strain KG4-3^T. The DNA G + C contents of strains Mo2-6^T, S9, KG4-3^T, and 50Mo3-2 were 33.4%, 33.3%, 32.5%, and 32.7%, respectively. Phylogenetic analyses based on the 16S rRNA gene and whole-genome sequences revealed that strains Mo2-6^T and S9, as well as KG4-3^T and 50Mo3-2, formed distinct lineages within the genus Staphylococcus. Digital DNA-DNA hybridization (dDDH) and average nucleotide identity (ANI) analyses confirmed that strains Mo2-6^T and S9, as well as KG4-3^T and 50Mo3-2, belonged to the same species. Meanwhile, dDDH and ANI values between strains Mo2-6^T and KG4-3^T, as well as comparisons with other Staphylococcus type strains, were below the species delineation thresholds, indicating they represent novel species. Based on phenotypic, chemotaxonomic, and molecular data, we propose strain Mo2-6^T as the type strain of Staphylococcus parequorum sp. nov. (=KACC 23685^T =JCM 37038^T) and strain KG4-3^T as the type strain of Staphylococcus halotolerans sp. nov. (=KACC 23684^T =JCM 37037^T).

Characterization of novel bacteriophages for effective phage therapy against Vibrio infections in aquaculture: Kira Moon, Sangdon Ryu, Seung Hui Song, Se Won Chun, Nakyeong Lee, Aslan Hwanhwi Lee; J. Microbiol. 2025;63(5):e2502009. Published online May 27, 2025; DOI: https://doi.org/10.71150/jm.2502009

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The widespread use of antibiotics in aquaculture has led to the emergence of multidrug-resistant pathogens and environmental concerns, highlighting the need for sustainable, eco-friendly alternatives. In this study, we isolated and characterized three novel bacteriophages from aquaculture effluents in Korean shrimp farms that target the key Vibrio pathogens, Vibrio harveyi, and Vibrio parahaemolyticus. Bacteriophages were isolated through environmental enrichment and serial purification using double-layer agar assays. Transmission electron microscopy revealed that the phages infecting V. harveyi, designated as vB_VhaS-MS01 and vB_VhaS-MS03, exhibited typical Siphoviridae morphology with long contractile tails and icosahedral heads, whereas the phage isolated from V. parahaemolyticus (vB_VpaP-MS02) displayed Podoviridae characteristics with an icosahedral head and short tail.

Whole-genome sequencing produced complete, circularized genomes of 81,710 bp for vB_VhaS-MS01, 81,874 bp for vB_VhaS-MS03, and 76,865 bp for vB_VpaP-MS02, each showing a modular genome organization typical of Caudoviricetes. Genomic and phylogenetic analyses based on the terminase large subunit gene revealed that although vB_VhaS-MS01 and vB_VhaS-MS03 were closely related, vB_VpaP-MS02 exhibited a distinct genomic architecture that reflects its unique morphology and host specificity. Collectively, these comparative analyses demonstrated that all three phages possess genetic sequences markedly different from those of previously reported bacteriophages, thereby establishing their novelty. One-step growth and multiplicity of infection (MOI) experiments demonstrated significant differences in replication kinetics, such as burst size and lytic efficiency, among the phages, with vB_VhaS-MS03 maintaining the most effective bacterial control, even at an MOI of 0.01. Additionally, host range assays showed that vB_VhaS-MS03 possessed a broader spectrum of activity, supporting its potential use as a stand-alone agent or key component of phage cocktails. These findings highlight the potential of region-specific phage therapy as a targeted and sustainable alternative to antibiotics for controlling Vibrio infections in aquaculture.

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Feed Additives in Aquaculture: Benefits, Risks, and the Need for Robust Regulatory Frameworks
Ekemini Okon, Matthew Iyobhebhe, Paul Olatunji, Mary Adeleke, Nelson Matekwe, Reuben Okocha
Fishes.2025; 10(9): 471. CrossRef

Review

Small regulatory RNAs as key modulators of antibiotic resistance in pathogenic bacteria: Yubin Yang, Hana Hyeon, Minju Joo, Kangseok Lee, Eunkyoung Shin; J. Microbiol. 2025;63(4):e2501027. Published online April 2, 2025; DOI: https://doi.org/10.71150/jm.2501027

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The escalating antibiotic resistance crisis poses a significant challenge to global public health, threatening the efficacy of current treatments and driving the emergence of multidrug-resistant pathogens. Among the various factors associated with bacterial antibiotic resistance, small regulatory RNAs (sRNAs) have emerged as pivotal post-transcriptional regulators which orchestrate bacterial adaptation to antibiotic pressure via diverse mechanisms. This review consolidates the current knowledge on sRNA-mediated mechanisms, focusing on drug uptake, drug efflux systems, lipopolysaccharides, cell wall modification, biofilm formation, and mutagenesis. Recent advances in transcriptomics and functional analyses have revealed novel sRNAs and their regulatory networks, expanding our understanding of resistance mechanisms. These findings highlight the potential of targeting sRNA-mediated pathways as an innovative therapeutic strategy to combat antibiotic resistance, and offer promising avenues for managing challenging bacterial infections.

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Biofilm, resistance, and quorum sensing: The triple threat in bacterial pathogenesis
Mohammad Nazrul Islam Bhuiyan
The Microbe.2025; 9: 100578. CrossRef
Biofilm maturation in carbapenem-resistant Pseudomonas aeruginosa is regulated by the sRNA PA213 and its corresponding encoded small protein
Yongli Song, Jie Li, Yating Zhang, Lingge Su, Shuang Qin, Chunyan Wu, Guibo Song
International Journal of Antimicrobial Agents.2025; 66(6): 107625. CrossRef

Journal Articles

Characterization and Comparative Genomic Analysis of vB_BceM_CEP1: A Novel Temperate Bacteriophage Infecting Burkholderia cepacia Complex: Momen Askoura, Eslam K Fahmy, Safya E Esmaeel, Wael A H Hegazy, Aliaa Abdelghafar; J. Microbiol. 2024;62(11):1035-1055. Published online November 18, 2024; DOI: https://doi.org/10.1007/s12275-024-00185-2

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The increasing prevalence of multidrug-resistant bacteria imminently threatens public health and jeopardizes nearly all aspects of modern medicine. The Burkholderia cepacia complex (Bcc) comprises Burkholderia cepacia and the related species of Gram-negative bacteria. Members of the Bcc group are opportunistic pathogens responsible for various chronic illnesses, including cystic fibrosis and chronic granulomatous disease. Phage therapy is emerging as a potential solution to combat the antimicrobial resistance crisis. In this study, a temperate phage vB_BceM_CEP1 was isolated from sewage and fully characterized. Transmission electron microscopy indicated that vB_BceM_CEP1 belongs to the family Peduoviridae. The isolated phage demonstrated enhanced environmental stability and antibiofilm potential. One-step growth analysis revealed a latent period of 30 min and an average burst size of 139 plaque-forming units per cell. The genome of vB_BceM_CEP1 consists of 32,486 bp with a GC content of 62.05%. A total of 40 open reading frames were annotated in the phage genome, and none of the predicted genes was annotated as tRNA. Notably, genes associated with antibiotic resistance, host virulence factors, and toxins were absent from the vB_BceM_CEP1 genome. Based on its unique phenotype and phylogeny, the isolated phage vB_BceM_CEP1 is classified as a new temperate phage with lytic activity. The findings of this study enhance our understanding of the diversity of Bcc phages.

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Bacteriophage therapy to combat MDR non-fermenting Gram-negative bacteria causing nosocomial infections: recent progress and challenges
Sunil Kumar, Razique Anwer, Anil Sharma, Mukesh Yadav, Nirmala Sehrawat
Naunyn-Schmiedeberg's Archives of Pharmacology.2025;[Epub] CrossRef

The Gut Microbiota Mediates the Protective Effects of Spironolactone on Myocardial Infarction: Lu Li, Jian-Yong Sun, Yu-Lin Li, Shi-Wei Zhu, Sheng-Zhong Duan; J. Microbiol. 2024;62(10):883-895. Published online September 3, 2024; DOI: https://doi.org/10.1007/s12275-024-00164-7

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Myocardial infarction (MI) is a type of cardiovascular disease that influences millions of human beings worldwide and has a great rate of mortality and morbidity. Spironolactone has been used as a critical drug for the treatment of cardiac failure and it ameliorates cardiac dysfunction post-MI. Despite these findings, whether there is a relationship between the therapeutic effects of spironolactone and the gut microorganism after MI has not been determined. In our research, we used male C57BL/6 J mice to explore whether the gut microbiota mediates the beneficial function of spironolactone after myocardial infarction. We demonstrated that deletion of the gut microbiota eliminated the beneficial function of spironolactone in MI mice, displaying exacerbated cardiac dysfunction, cardiac infarct size. In addition, the gut microbiota was altered by spironolactone after sham or MI operation in mice. We also used male C57BL/6 J mice to investigate the function of a probiotic in the myocardial infarction. In summary, our findings reveal a precious role of the gut flora in the therapeutic function of spironolactone on MI.

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Probiotics and Prebiotics in Post-Myocardial Infarction Rehabilitation: Mechanisms, Benefits, and Future Directions
Georgy Leonov, Elena Livantsova, Yurgita Varaeva, Antonina Starodubova
Current Nutrition Reports.2025;[Epub] CrossRef
Research Trends and Hotspots of Gut Microbiota and Its Metabolites in Cardiovascular Diseases: A Bibliometric Analysis
Kaixuan Zhang, Yajun Shi, Lirong Peng, Xiaofei Zhang, Nanbo Zheng, Jiajing Xin, Junbo Zou, Fei Luan
Journal of Multidisciplinary Healthcare.2025; Volume 18: 5125. CrossRef
The role of the gut microbiota in the onset and progression of heart failure: insights into epigenetic mechanisms and aging
Giulia Matacchione, Francesco Piacenza, Lorenzo Pimpini, Yuri Rosati, Serena Marcozzi
Clinical Epigenetics.2024;[Epub] CrossRef

Delineating the Acquired Genetic Diversity and Multidrug Resistance in Alcaligenes from Poultry Farms and Nearby Soil: Abhilash Bhattacharjee, Anil Kumar Singh; J. Microbiol. 2024;62(7):511-523. Published online June 21, 2024; DOI: https://doi.org/10.1007/s12275-024-00129-w

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Alcaligenes faecalis is one of the most important and clinically significant environmental pathogens, increasing in importance due to its isolation from soil and nosocomial environments. The Gram-negative soil bacterium is associated with skin endocarditis, bacteremia, dysentery, meningitis, endophthalmitis, urinary tract infections, and pneumonia in patients. With emerging antibiotic resistance in A. faecalis, it has become crucial to understand the origin of such resistance genes within this clinically significant environmental and gut bacterium. In this research, we studied the impact of antibiotic overuse in poultry and its effect on developing resistance in A. faecalis. We sampled soil and faecal materials from five poultry farms, performed whole genome sequencing & analysis and identified four strains of A. faecalis. Furthermore, we characterized the genes in the genomic islands of A. faecalis isolates. We found four multidrug-resistant A. faecalis strains that showed resistance against vancomycin (MIC >1000 μg/ml), ceftazidime (50 μg/ml), colistin (50 μg/ml) and ciprofloxacin (50 μg/ml). From whole genome comparative analysis, we found more than 180 resistance genes compared to the reference sequence. Parts of our assembled contigs were found to be similar to different bacteria which included pbp1A and pbp2 imparting resistance to amoxicillin originally a part of Helicobacter and Bordetella pertussis. We also found the Mycobacterial insertion element IS6110 in the genomic islands of all four genomes. This prominent insertion element can be transferred and induce resistance to other bacterial genomes. The results thus are crucial in understanding the transfer of resistance genes in the environment and can help in developing regimes for antibiotic use in the food and poultry industry.

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First Case of Respiratory Infection in Rabbits Caused by Alcaligenes faecalis in Romania
Vlad Iorgoni, Ionica Iancu, Ionela Popa, Alexandru Gligor, Gabriel Orghici, Bogdan Sicoe, Corina Badea, Cristian Dreghiciu, Călin Pop, Timea Bochiș, Janos Degi, Luminita Costinar, Corina Pascu, Viorel Herman
Veterinary Sciences.2025; 12(1): 33. CrossRef

Review

Structural Insights into the Lipopolysaccharide Transport (Lpt) System as a Novel Antibiotic Target: Yurim Yoon, Saemee Song; J. Microbiol. 2024;62(4):261-275. Published online May 31, 2024; DOI: https://doi.org/10.1007/s12275-024-00137-w

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Lipopolysaccharide (LPS) is a critical component of the extracellular leaflet within the bacterial outer membrane, forming an effective physical barrier against environmental threats in Gram-negative bacteria. After LPS is synthesized and matured in the bacterial cytoplasm and the inner membrane (IM), LPS is inserted into the outer membrane (OM) through the ATP-driven LPS transport (Lpt) pathway, which is an energy-intensive process. A trans-envelope complex that contains seven Lpt proteins (LptA-LptG) is crucial for extracting LPS from the IM and transporting it across the periplasm to the OM. The last step in LPS transport involves the mediation of the LptDE complex, facilitating the insertion of LPS into the outer leaflet of the OM. As the Lpt system plays an essential role in maintaining the impermeability of the OM via LPS decoration, the interactions between these interconnected subunits, which are meticulously regulated, may be potential targets for the development of new antibiotics to combat multidrug-resistant Gram-negative bacteria. In this review, we aimed to provide an overview of current research concerning the structural interactions within the Lpt system and their implications to clarify the function and regulation of LPS transport in the overall process of OM biogenesis. Additionally, we explored studies on the development of therapeutic inhibitors of LPS transport, the factors that limit success, and future prospects.

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Boosting the Antimicrobial Activity of Quaternary Ammonium Photosensitizers by Janus‐Type AIE Luminogens
Dongyang Fan, Meng Li, Zipeng Shen, Ying Li, Jingjing Guo, Dong Wang, Ting Han, Ben Zhong Tang
Aggregate.2025;[Epub] CrossRef
Functional Versatility of Vibrio cholerae Outer Membrane Proteins
Annabelle Mathieu-Denoncourt, Marylise Duperthuy
Applied Microbiology.2025; 5(3): 64. CrossRef

Journal Articles

Coumarin-based combined computational study to design novel drugs against Candida albicans: Akhilesh Kumar Maurya , Nidhi Mishra; J. Microbiol. 2022;60(12):1201-1207. Published online November 10, 2022; DOI: https://doi.org/10.1007/s12275-022-2279-5

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Candida species cause the most prevalent fungal illness, candidiasis. Candida albicans is known to cause bloodstream infections. This species is a commensal bacterium, but it can cause hospital–acquired diseases, particularly in COVID-19 patients with impaired immune systems. Candida infections have increased in patients with acute respiratory distress syndrome. Coumarins are both naturally occurring and synthetically produced. In this study, the biological activity of 40 coumarin derivatives was used to create a three-dimensional quantitative structure activity relationship (3D-QSAR) model. The training and test minimum inhibitory concentration values of C. albicans active compounds were split, and a regression model based on statistical data was established. This model served as a foundation for the creation of coumarin derivative QSARs. This is a unique way to create new therapeutic compounds for various ailments. We constructed novel structural coumarin derivatives using the derived QSAR model, and the models were confirmed using molecular docking and molecular dynamics simulation.

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Synthesis, molecular docking and anti-biofilm activity of novel benzo[4,5]imidazo[2,1-a]quinazoline, 4H-chromene, and acridine derivatives as potent anti-candida agents
Farid M. Sroor, Ahmed Younis, Mohamed Abdelraof, Ismail A. Abdelhamid
Journal of Molecular Structure.2025; 1331: 141520. CrossRef
Coumarin derivatives ameliorate the intestinal inflammation and pathogenic gut microbiome changes in the model of infectious colitis through antibacterial activity
Hui-su Jung, Yei Ju Park, Bon-Hee Gu, Goeun Han, Woonhak Ji, Su mi Hwang, Myunghoo Kim
Frontiers in Cellular and Infection Microbiology.2024;[Epub] CrossRef
Therapeutic Effects of Coumarins with Different Substitution Patterns
Virginia Flores-Morales, Ana P. Villasana-Ruíz, Idalia Garza-Veloz, Samantha González-Delgado, Margarita L. Martinez-Fierro
Molecules.2023; 28(5): 2413. CrossRef
Cyclometalated iridium(III) complexes combined with fluconazole: antifungal activity against resistant C. albicans
Jun-Jian Lu, Zhi-Chang Xu, Hou Zhu, Lin-Yuan Zhu, Xiu-Rong Ma, Rui-Rui Wang, Rong-Tao Li, Rui-Rong Ye
Frontiers in Cellular and Infection Microbiology.2023;[Epub] CrossRef

Description of Flavobacterium cyclinae sp. nov. and Flavobacterium channae sp. nov., isolated from the intestines of Cyclina sinensis (Corb shell) and Channa argus (Northern snakehead): Seomin Kang , Jae-Yun Lee , Jeong Eun Han , Yun-Seok Jeong , Do-Hun Gim , Jin-Woo Bae; J. Microbiol. 2022;60(9):890-898. Published online June 22, 2022; DOI: https://doi.org/10.1007/s12275-022-2075-2

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Two novel bacterial strains, KSM-R2A25T and KSM-R2A30T, were isolated from intestines of Cyclina sinensis (corb shell) and Channa argus (northern snakehead), respectively. Both specimens were collected in Korea. The strains were Gramstain- negative, non-motile, and strictly aerobic. According to phylogenetic analyses based on 16S rRNA gene sequences, strains belonged to the genus Flavobacterium within the family Flavobacteriaceae. 16S rRNA gene sequences of strains KSMR2A25T and KSM-R2A30T were closely related to Flavobacterium cucumis DSM 18830T and Flavobacterium aquaticum JC164T with sequence similarities of 97.77% and 98.54%, respectively. Further genomic analyses including reconstruction of the UBCG tree and overall genome-related indices suggested them as novel species of the genus Flavobacterium. Both strains contained menaquinone with six isoprene units (MK-6) as a major isoprenoid quinone and iso-C15:1 G, iso- C15:0, and iso-C16:0 as major cellular fatty acids. The major polar lipid in both strains was phosphatidylethanolamine. The genomic G + C contents of strains KSM-R2A25T and KSMR2A30T were 31.7 and 31.9%, respectively. Based on the polyphasic taxonomic study presented here, strains KSM-R2A25T and KSM-R2A30T represent novel species of the genus Flavobacterium, for which the names Flavobacterium cyclinae sp. nov and Flavobacterium channae sp. nov are proposed. The type strains of F. cyclinae sp. nov and F. channae sp. nov are KSM-R2A25T (= KCTC 82978T = JCM 34997T) and KSMR2A30T (= KCTC 82979T = JCM 34998T), respectively.

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Flavobacterium rivulicola sp. nov., Isolated from a Freshwater Stream
Sumin Kim, Miri S. Park, Ilnam Kang, Jang-Cheon Cho
Current Microbiology.2024;[Epub] CrossRef
Comprehensive genome analysis of five novel flavobacteria: Flavobacterium piscisymbiosum sp. nov., Flavobacterium pisciphilum sp. nov., Flavobacterium flavipigmentatum sp. nov., Flavobacterium lipolyticum sp. nov. and Flavobacterium cupriresistens sp. nov
Izzet Burcin Saticioglu, Hilal Ay, Soner Altun, Nihed Ajmi, Enes Said Gunduz, Huban Gocmen, Muhammed Duman
Systematic and Applied Microbiology.2024; 47(4): 126518. CrossRef
The first report of submandibular lymph node infection with Flavobacterium ceti in a horse and its complete genome sequence
Seung-Ho Ryu, Beomsoon Jang, Byung-Sun Kim, Kun Taek Park
Microbial Pathogenesis.2024; 197: 107096. CrossRef
Rhodobacteraceae are Prevalent and Ecologically Crucial Bacterial Members in Marine Biofloc Aquaculture
Meora Rajeev, Jang-Cheon Cho
Journal of Microbiology.2024; 62(11): 985. CrossRef
Congregibacter variabilis sp. nov. and Congregibacter brevis sp. nov. Within the OM60/NOR5 Clade, Isolated from Seawater, and Emended Description of the Genus Congregibacter
Hyeonsu Tak, Miri S. Park, Hyerim Cho, Yeonjung Lim, Jang-Cheon Cho
Journal of Microbiology.2024; 62(9): 739. CrossRef
An update on novel taxa and revised taxonomic status of bacteria isolated from aquatic host species described in 2022–2023
Claire R. Burbick, Sara D. Lawhon, Brittany Bukouras, Giovanna Lazzerini, Erik Munson, Romney M. Humphries
Journal of Clinical Microbiology.2024;[Epub] CrossRef
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Peng Sun, Di Zhang, Na Li, Xiao-Fei Li, Yi-Han Ma, Hui Li, Ye Tian, Tao Wang, Shahrood Ahmed Siddiquid, Wu-wen Sun, Lei Zhang, Xiao-Feng Shan, Chun-Feng Wang, Ai-Dong Qian, Dong-Xing Zhang
Ecotoxicology and Environmental Safety.2023; 255: 114825. CrossRef
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Hyunyoung Jo, Miri S. Park, Yeonjung Lim, Ilnam Kang, Jang-Cheon Cho
Journal of Microbiology.2023; 61(5): 495. CrossRef
Validation List no. 209. Valid publication of new names and new combinations effectively published outside the IJSEM
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Eradication of drug-resistant Acinetobacter baumannii by cell-penetrating peptide fused endolysin: Jeonghyun Lim , Jaeyeon Jang , Heejoon Myung , Miryoung Song; J. Microbiol. 2022;60(8):859-866. Published online May 25, 2022; DOI: https://doi.org/10.1007/s12275-022-2107-y

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Antimicrobial agents targeting peptidoglycan have shown successful results in eliminating bacteria with high selective toxicity. Bacteriophage encoded endolysin as an alternative antibiotics is a peptidoglycan degrading enzyme with a low rate of resistance. Here, the engineered endolysin was developed to defeat multiple drug-resistant (MDR) Acinetobacter baumannii. First, putative endolysin PA90 was predicted by genome analysis of isolated Pseudomonas phage PBPA. The His-tagged PA90 was purified from BL21(DE3) pLysS and tested for the enzymatic activity using Gram-negative pathogens known for having a high antibiotic resistance rate including A. baumannii. Since the measured activity of PA90 was low, probably due to the outer membrane, cell-penetrating peptide (CPP) DS4.3 was introduced at the N-terminus of PA90 to aid access to its substrate. This engineered endolysin, DS-PA90, completely killed A. baumannii at 0.25 μM, at which concentration PA90 could only eliminate less than one log in CFU/ml. Additionally, DS-PA90 has tolerance to NaCl, where the ~50% of activity could be maintained in the presence of 150 mM NaCl, and stable activity was also observed with changes in pH or temperature. Even MDR A. baumannii strains were highly susceptible to DS-PA90 treatment: five out of nine strains were entirely killed and four strains were reduced by 3–4 log in CFU/ml. Consequently, DS-PA90 could protect waxworm from A. baumannii-induced death by ~70% for ATCC 17978 or ~44% for MDR strain 1656-2 infection. Collectively, our data suggest that CPP-fused endolysin can be an effective antibacterial agent against Gramnegative pathogens regardless of antibiotics resistance mechanisms.

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Bactericidal Effect of a Novel Phage Endolysin Targeting Multi-Drug-Resistant Acinetobacter baumannii
Sara Garcia Torres, Dirk Henrich, Rene D. Verboket, Ingo Marzi, Gernot Hahne, Volkhard A. J. Kempf, Stephan Göttig
Antibiotics.2025; 14(2): 162. CrossRef
In vitro and in vivo efficacy studies of an engineered endolysin targeting Gram-negative pathogens
Hye-Won Hong, Jaeyeon Jang, Young Deuk Kim, Tae-Hwan Jeong, Dogeun Lee, Kyungah Park, Min Soo Kim, In-Soo Yoon, Miryoung Song, Min-Duk Seo, Hyunjin Yoon, Daejin Lim, Heejoon Myung
International Journal of Biological Macromolecules.2025; 302: 140463. CrossRef
Endolysins and membrane-active peptides: innovative engineering strategies against gram-negative bacteria
Monika Wojciechowska
Frontiers in Microbiology.2025;[Epub] CrossRef
Bacteriophage therapy to combat MDR non-fermenting Gram-negative bacteria causing nosocomial infections: recent progress and challenges
Sunil Kumar, Razique Anwer, Anil Sharma, Mukesh Yadav, Nirmala Sehrawat
Naunyn-Schmiedeberg's Archives of Pharmacology.2025;[Epub] CrossRef
Antimicrobial peptide thanatin fused endolysin PA90 (Tha-PA90) for the control of Acinetobacter baumannii infection in mouse model
Jeonghyun Lim, Heejoon Myung, Daejin Lim, Miryoung Song
Journal of Biomedical Science.2024;[Epub] CrossRef
Tissue damage alleviation and mucin inhibition by P5 in a respiratory infection mouse model with multidrug-resistant Acinetobacter baumannii
Jun Hee Oh, Jonggwan Park, Hee Kyoung Kang, Hee Joo Park, Yoonkyung Park
Biomedicine & Pharmacotherapy.2024; 181: 117724. CrossRef
Potential of antimicrobial peptide-fused endolysin LysC02 as therapeutics for infections and disinfectants for food contact surfaces to control Cronobacter sakazakii
Doyeon Kim, Jinwoo Kim, Minsik Kim
Food Control.2024; 157: 110190. CrossRef
Gram-negative endolysins: overcoming the outer membrane obstacle
Hazel M Sisson, Simon A Jackson, Robert D Fagerlund, Suzanne L Warring, Peter C Fineran
Current Opinion in Microbiology.2024; 78: 102433. CrossRef
LysJEP8: A promising novel endolysin for combating multidrug‐resistant Gram‐negative bacteria
Jose Vicente Carratalá, Neus Ferrer‐Miralles, Elena Garcia‐Fruitós, Anna Arís
Microbial Biotechnology.2024;[Epub] CrossRef
You get what you test for: The killing effect of phage lysins is highly dependent on buffer tonicity and ionic strength
Roberto Vázquez, Diana Gutiérrez, Zoë Dezutter, Bjorn Criel, Philippe de Groote, Yves Briers
Microbial Biotechnology.2024;[Epub] CrossRef
Endolysins: a new antimicrobial agent against antimicrobial resistance. Strategies and opportunities in overcoming the challenges of endolysins against Gram-negative bacteria
Fazal Mehmood Khan, Fazal Rasheed, Yunlan Yang, Bin Liu, Rui Zhang
Frontiers in Pharmacology.2024;[Epub] CrossRef
Characterization of Three Different Endolysins Effective against Gram-Negative Bacteria
Tae-Hwan Jeong, Hye-Won Hong, Min Soo Kim, Miryoung Song, Heejoon Myung
Viruses.2023; 15(3): 679. CrossRef
Design strategies for positively charged endolysins: Insights into Artilysin development
Jose Vicente Carratalá, Anna Arís, Elena Garcia-Fruitós, Neus Ferrer-Miralles
Biotechnology Advances.2023; 69: 108250. CrossRef

Assessing the microcystins concentration through optimized protein phosphatase inhibition assay in environmental samples: Kyoung-Hee Oh , Kung-Min Beak , Yuna Shin , Young-Cheol Cho; J. Microbiol. 2022;60(6):602-609. Published online April 30, 2022; DOI: https://doi.org/10.1007/s12275-022-2020-4

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Protein phosphatase (PPase) inhibition assay (PPIA) is widely used to analyze the concentration of microcystins (MCs) because it is comparatively less expensive and faster than other assays. This study aimed to optimize the PPIA by determining a suitable reaction terminator and an optimal methanol concentration in the sample. The most suitable reaction time was 90 min, with the corresponding methanol concentration in the sample being 15% or less. When p-nitrophenyl phosphate (pNPP) was used as a substrate, copper chloride solution was suitably used as a reaction terminator, and when 4- methylumbelliferyl phosphate (MUP) was used, a glycine buffer not only increased the measurement sensitivity of the reaction product but also terminated the enzymatic reaction. When PPase 1 and MUP were used as an enzyme and a substrate, respectively, the limit of quantitation for MC-leucine/ arginine (LR) was 0.02 μg/L, whereas it was 0.1 μg/L when pNPP was used as a substrate. The proposed method facilitated the measurement of MC-LR concentration without additional pretreatments, such as concentration or purification; therefore, this method was suitable and feasible for the continuous monitoring of MCs in drinking water.

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Acid phosphatase detection using a colorimetric probe based on azo compound toward forensic applications for seminal fluid identification
Jéssica Raimundo da Rocha, Marcone Gomes dos Santos Alcântara, Verônica Diniz da Silva, Dimas José da Paz Lima, Josué Carinhanha Caldas Santos
Dyes and Pigments.2025; 239: 112806. CrossRef
Analyzing MC-LR distribution characteristics in natural lakes by a novel fluorescence technology
Xiangyu Hu, Zhaomin Wang, Xiao Ye, Ping Xie, Yong Liu
Environmental Pollution.2024; 342: 123123. CrossRef
Magnetic solid phase extraction coupled with high-performance liquid chromatography-diode array detection based on assembled magnetic covalent organic frameworks for selective extraction and detection of microcystins in aquatic foods
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Characterization of components of a reducing system for SoxR in the cytoplasmic membrane of Escherichia coli: Kang-Lok Lee , Kyung-Chang Lee , Joon-Hee Lee , Jung-Hye Roe; J. Microbiol. 2022;60(4):387-394. Published online March 28, 2022; DOI: https://doi.org/10.1007/s12275-022-1667-1

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A reducing system of SoxR, a regulator of redox-active molecules, was identified as rsxABCDGE gene products and RseC in Escherichia coli through genetic studies. We found that ApbE was an additional component of the reducer system. Bacterial two hybrid analysis revealed that these proteins indeed had multiple interactions among themselves. RseC and RsxB formed the core of the complex, interacting with more than five other components. RsxC, the only cytoplasmic component of the system, interacted with SoxR. It might be linked with the rest of the complex via RsxB. Membrane fractions containing the wild type complex but not the mutant complex reduced purified SoxR using NADH as an electron source. These results suggest that Rsx genes, RseC, and ApbE can form a complex using NAD(P)H to reduce SoxR.

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The RNF/NQR redox pumps: a versatile system for energy transduction in bacteria and archaea
Wolfgang Buckel, Ulrich Ermler, Janet Vonck, Günter Fritz, Julia Steuber
Applied Microbiology and Biotechnology.2025;[Epub] CrossRef
AcrAB-TolC efflux pump overexpression and tet(A) gene mutation increase tigecycline resistance in Klebsiella pneumoniae
Zhaoxin Xia, Jing zhou, Nana Gao, Ge Li, Runde Liu, Guoping Lu, Jilu Shen
World Journal of Microbiology and Biotechnology.2024;[Epub] CrossRef
The Na+-translocating NADH:quinone oxidoreductase (Na+-NQR): Physiological role, structure and function of a redox-driven, molecular machine
Julia Steuber, Günter Fritz
Biochimica et Biophysica Acta (BBA) - Bioenergetics.2024; 1865(4): 149485. CrossRef
Functional Characterization of RseC in the SoxR Reducing System and Its Role in Oxidative Stress Response in Escherichia coli
Kang-Lok Lee, Joon-Hee Lee, Yun-Hee Kim, Jung-Hye Roe
Journal of Microbiology and Biotechnology.2024; 34(12): 2547. CrossRef
Functional analysis of bacterial genes accidentally packaged in rhizospheric phageome of the wild plant species Abutilon fruticosum
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Saudi Journal of Biological Sciences.2023; 30(10): 103789. CrossRef

Review

Coordinated regulation of interferon and inflammasome signaling pathways by SARS-CoV-2 proteins: Na-Eun Kim , Yoon-Jae Song; J. Microbiol. 2022;60(3):300-307. Published online January 28, 2022; DOI: https://doi.org/10.1007/s12275-022-1502-8

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Type I and III interferons (IFNs) and the nucleotide-binding domain (NBD) leucine-rich repeat (LRR)-containing receptor (NLR) family pyrin domain containing 3 (NLRP3) inflammasome play pivotal roles in the pathogenesis of SARS-CoV-2. While optimal IFN and inflammasome responses are essential for limiting SARS-CoV-2 infection, aberrant activation of these innate immune responses is associated with COVID-19 pathogenesis. In this review, we focus our discussion on recent findings on SARS-CoV-2-induced type I and III IFNs and NLRP3 inflammasome responses and the viral proteins regulating these mechanisms.

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Journal Articles

The synergy effect of arbuscular mycorrhizal fungi symbiosis and exogenous calcium on bacterial community composition and growth performance of peanut (Arachis hypogaea L.) in saline alkali soil: Dunwei Ci , Zhaohui Tang , Hong Ding , Li Cui , Guanchu Zhang , Shangxia Li , Liangxiang Dai , Feifei Qin , Zhimeng Zhang , Jishun Yang , Yang Xu; J. Microbiol. 2021;59(1):51-63. Published online November 17, 2020; DOI: https://doi.org/10.1007/s12275-021-0317-3

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Peanut (Arachis hypogaea. L) is an important oil seed crop. Both arbuscular mycorrhizal fungi (AMF) symbiosis and calcium (Ca2+) application can ameliorate the impact of saline soil on peanut production, and the rhizosphere bacterial communities are also closely correlated with peanut salt tolerance; however, whether AMF and Ca2+ can withstand high-salinity through or partially through modulating rhizosphere bacterial communities is unclear. Here, we used the rhizosphere bacterial DNA from saline alkali soil treated with AMF and Ca2+ alone or together to perform high-throughput sequencing of 16S rRNA genes. Taxonomic analysis revealed that AMF and Ca2+ treatment increased the abundance of Proteobacteria and Firmicutes at the phylum level. The nitrogenfixing bacterium Sphingomonas was the dominant genus in these soils at the genus level, and the soil invertase and urease activities were also increased after AMF and Ca2+ treatment, implying that AMF and Ca2+ effectively improved the living environment of plants under salt stress. Moreover, AMF combined with Ca2+ was better than AMF or Ca2+ alone at altering the bacterial structure and improving peanut growth in saline alkali soil. Together, AMF and Ca2+ applications are conducive to peanut salt adaption by regulating the bacterial community in saline alkali soil.

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Diversified Soil Types Differentially Regulated the Peanut (Arachis hydropoaea L.) Growth and Rhizosphere Bacterial Community Structure
Wenfei Lan, Hong Ding, Zhimeng Zhang, Fan Li, Hao Feng, Qing Guo, Feifei Qin, Guanchu Zhang, Manlin Xu, Yang Xu
Plants.2025; 14(8): 1169. CrossRef
Stratified Fertilization Increases Peanut Yield and Quality by Enhancing Photosynthesis and Modulating Antioxidative, Carbon and Nitrogen Metabolic Enzymes
Tong Si, Jinhao Lu, Zhaojun Liang, Jie Kong, Xiaona Yu, Xiaojun Zhang, Xiaoxia Zou
Journal of Soil Science and Plant Nutrition.2025; 25(2): 4925. CrossRef
Microbial inoculants – fostering sustainability in groundnut production
Kaviya Sree Krishnan, Anandham Rangasamy, Yuvasri Errakutty Arunan, Balachandar Dananjeyan, Thiyageshwari Subramanium, Vincent Saminathan
Science Progress.2025;[Epub] CrossRef
Location-optimized remediation measures for soil multifunctionality and carbon sequestration of saline-alkali land in China
Zhaoqiang Han, Yi Leng, Zhe Xu, Longping Tu, Chao Wang, Shuqing Li, Shuang Wu, Yawen Huang, Shuwei Liu, Jinyang Wang, Philippe Ciais, Ruoya Ma, Jianwen Zou
Journal of Cleaner Production.2025; 519: 146017. CrossRef
Morphological and molecular identification of indigenous arbuscular mycorrhizal fungi in the rhizosphere of chickpea (Cicer arietinum) and their role in nutrient uptake
Kamran Akbar, Tabassum Yaseen, Banzeer Ahsan Abbasi, Javed Iqbal, Badr Alharthi, Sajid Fiaz, Salma Noureen, Shumaila Ijaz, Ejaz Aziz, Rashid Iqbal, Muhammad Zaheer
Functional Plant Biology.2025;[Epub] CrossRef
Arbuscular mycorrhizal fungi drive bacterial community assembly in halophyte Suaeda salsa
Fengwei Diao, Bingbing Jia, Junqing Luo, Shengli Ding, Tai Liu, Wei Guo
Microbiological Research.2024; 282: 127657. CrossRef
Functional Characterization of Core and Unique Calcite-Dissolving Bacteria Communities from Peanut Fields
Alan Peper, Carter J. Newton, Sheena Lim, Wendy Zheng, Timothy Brenneman, Li Yang
Phytopathology®.2024; 114(5): 1011. CrossRef
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Ravi Kumar Gangwar, András Táncsics, Marianna Makádi, Milán Farkas, Mátyás Cserháti, Erika Michéli, Márta Fuchs, Tamás Szegi
Biologia Futura.2024; 75(3): 339. CrossRef
Peanut production in saline-alkali land of Yellow River Delta: influence of spatiotemporal changes of meteorological conditions and soil properties
Feifei Qin, Zhihong Xin, Jianguo Wang, Jialei Zhang, Jishun Yang, Feng Guo, Zhaohui Tang, Dunwei Ci
BMC Plant Biology.2024;[Epub] CrossRef
Multi-year crop rotation and quicklime application promote stable peanut yield and high nutrient-use efficiency by regulating soil nutrient availability and bacterial/fungal community
Liyu Yang, Caibin Wang, Xinhua He, Haiyan Liang, Qi Wu, Xuewu Sun, Miao Liu, Pu Shen
Frontiers in Microbiology.2024;[Epub] CrossRef
Arbuscular Mycorrhizal Fungi Restored the Saline–Alkali Soil and Promoted the Growth of Peanut Roots
Dunwei Ci, Feifei Qin, Zhaohui Tang, Guanchu Zhang, Jialei Zhang, Tong Si, Jishun Yang, Yang Xu, Tianyi Yu, Manlin Xu, Kang He
Plants.2023; 12(19): 3426. CrossRef
Green manure increases peanut production by shaping the rhizosphere bacterial community and regulating soil metabolites under continuous peanut production systems
Yang Xu, Hong Ding, Guanchu Zhang, Zelun Li, Qing Guo, Hao Feng, Feifei Qin, Liangxiang Dai, Zhimeng Zhang
BMC Plant Biology.2023;[Epub] CrossRef
The multifaceted roles of Arbuscular Mycorrhizal Fungi in peanut responses to salt, drought, and cold stress
Yuexu Liu, Jinhao Lu, Li Cui, Zhaohui Tang, Dunwei Ci, Xiaoxia Zou, Xiaojun Zhang, Xiaona Yu, Yuefu Wang, Tong Si
BMC Plant Biology.2023;[Epub] CrossRef
Advances and future research in ecological stoichiometry under saline-alkali stress
Keyi Zhang, Lei Chang, Guanghui Li, Yuefen Li
Environmental Science and Pollution Research.2023; 30(3): 5475. CrossRef
Arbuscular mycorrhizal fungi increased peanut (Arachis hypogaea L.) yield by changing the rhizosphere microbial community structure in saline-alkali soil
Jia Kang, Wenlong Yang, Shangwu Liu, Ning Xuan, Yahui Shao, Yun Geng, Muhammad Afzal, Yingxin Zhang, Shousong Yue, Rubina Mushtaq, Gao Chen
Frontiers in Microbiology.2023;[Epub] CrossRef
Distribution of microbial communities in seasonally frozen soil layers on the Tibetan Plateau and the driving environmental factors
Xiaojie Wang, Zhiqiang Yu, Guofeng Shen, Hefa Cheng, Shu Tao
Environmental Science and Pollution Research.2023; 30(1): 1919. CrossRef
Effects of phosphogypsum on enzyme activity and microbial community in acid soil
Changan Li, Yonggang Dong, Yun Yi, Juan Tian, Chao Xuan, Yan Wang, Yuanbo Wen, Jianxin Cao
Scientific Reports.2023;[Epub] CrossRef
Microbial keystone taxa drive crop productivity through shifting aboveground-belowground mineral element flows
Jia Lin Wang, Kai Lou Liu, Xue Qiang Zhao, Gui-Feng Gao, Yong Hong Wu, Ren Fang Shen
Science of The Total Environment.2022; 811: 152342. CrossRef
Peanut and cotton intercropping increases productivity and economic returns through regulating plant nutrient accumulation and soil microbial communities
Wei Xie, Kai Zhang, Xiaoying Wang, Xiaoxia Zou, Xiaojun Zhang, Xiaona Yu, Yuefu Wang, Tong Si
BMC Plant Biology.2022;[Epub] CrossRef
Illumina MiSeq Sequencing Reveals Correlations among Fruit Ingredients, Environmental Factors, and AMF Communities in Three Lycium Barbarum Producing Regions of China
Kaili Chen, Gang Huang, Yuekun Li, Xinrui Zhang, Yonghui Lei, Yang Li, Jie Xiong, Yanfei Sun, Kristen M. DeAngelis
Microbiology Spectrum.2022;[Epub] CrossRef
Genome-Wide Identification of Auxin Response Factors in Peanut (Arachis hypogaea L.) and Functional Analysis in Root Morphology
Lu Luo, Qian Wan, Zipeng Yu, Kun Zhang, Xiurong Zhang, Suqing Zhu, Yongshan Wan, Zhaojun Ding, Fengzhen Liu
International Journal of Molecular Sciences.2022; 23(10): 5309. CrossRef
Impact of an arbuscular mycorrhizal fungal inoculum and exogenous methyl jasmonate on the performance of tall fescue under saline-alkali condition
Hui Liu, Huimin Tang, Xiaozhen Ni, Yajie Zhang, Yingchao Wang
Frontiers in Microbiology.2022;[Epub] CrossRef
The resistance of peanut to soil-borne pathogens improved by rhizosphere probiotics under calcium treatment
Wei Zhang, Bo-wen Zhang, Jie-fu Deng, Lin Li, Tu-yong Yi, Yan-yun Hong
BMC Microbiology.2021;[Epub] CrossRef
Arbuscular mycorrhizal fungi alleviate salinity stress in peanut: Evidence from pot‐grown and field experiments
Wenjie Qin, Hengyu Yan, Bingyin Zou, Runze Guo, Dunwei Ci, Zhaohui Tang, Xiaoxia Zou, Xiaojun Zhang, Xiaona Yu, Yuefu Wang, Tong Si
Food and Energy Security.2021;[Epub] CrossRef

Oecophyllibacter saccharovorans gen. nov. sp. nov., a bacterial symbiont of the weaver ant Oecophylla smaragdina: Kah-Ooi Chua , Wah-Seng See-Too , Jia-Yi Tan , Sze-Looi Song , Hoi-Sen Yong , Wai-Fong Yin , Kok-Gan Chan; J. Microbiol. 2020;58(12):988-997. Published online October 23, 2020; DOI: https://doi.org/10.1007/s12275-020-0325-8

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In this study, bacterial strains Ha5T, Ta1, and Jb2 were isolated from different colonies of weaver ant Oecophylla smaragdina. They were identified as bacterial symbionts of the ant belonging to family Acetobacteraceae and were distinguished as different strains based on distinctive random-amplified polymorphic DNA (RAPD) fingerprints. Cells of these bacterial strains were Gram-negative, rod-shaped, aerobic, non-motile, catalase-positive and oxidase-negative. They were able to grow at 15–37°C (optimum, 28–30°C) and in the presence of 0–1.5% (w/v) NaCl (optimum 0%). Their predominant cellular fatty acids were C18:1 ω7c, C16:0, C19:0 ω8c cyclo, C14:0, and C16:0 2-OH. Strains Ha5T, Ta1, and Jb2 shared highest 16S rRNA gene sequence similarity (94.56–94.63%) with Neokomagataea tanensis NBRC106556T of family Acetobacteraceae. Both 16S rRNA gene sequence-based phylogenetic analysis and core gene-based phylogenomic analysis placed them in a distinct lineage in family Acetobacteraceae. These bacterial strains shared higher than species level thresholds in multiple overall genome-relatedness indices which indicated that they belonged to the same species. In addition, they did not belong to any of the current taxa of Acetobacteraceae as they had low pairwise average nucleotide identity (< 71%), in silico DNA-DNA hybridization (< 38%) and average amino acid identity (< 67%) values with all the type members of the family. Based on these results, bacterial strains Ha5T, Ta1, and Jb2 represent a novel species of a novel genus in family Acetobacteraceae, for which we propose the name Oecophyllibacter saccharovorans gen. nov. sp. nov., and strain Ha5T as the type strain.

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Bernarda Karničnik, Tomaž Accetto, Lijana Fanedl, Igor Jugović, Janja Trček
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Aristophania vespae gen. nov., sp. nov., isolated from wasps, is related to Bombella and Oecophyllibacter, isolated from bees and ants
Juan Guzman, Miyoung Won, Anja Poehlein, Atena Sadat Sombolestani, Daniela Mayorga-Ch, David Laureys, Jessika De Clippeleer, Peter Kämpfer, Rolf Daniel, Andreas Vilcinskas, Peter Vandamme, Soon-Wo Kwon
International Journal of Systematic and Evolutionary Microbiology .2023;[Epub] CrossRef
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Nature Communications.2023;[Epub] CrossRef
Formicincola oecophyllae gen. nov. sp. nov., a novel member of the family Acetobacteraceae isolated from the weaver ant Oecophylla smaragdina
Kah-Ooi Chua, Yvonne Jing Mei Liew, Wah-Seng See-Too, Jia-Yi Tan, Hoi-Sen Yong, Wai-Fong Yin, Kok-Gan Chan
Antonie van Leeuwenhoek.2022; 115(8): 995. CrossRef
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Valid publication of new names and new combinations effectively published outside the IJSEM
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