Journal of Microbiology

Review

The “Cins” of Our Fathers: Rejuvenated Interest in Colicins to Combat Drug Resistance: Sumudu Upatissa , Robert J. Mitchell; J. Microbiol. 2023;61(2):145-158. Published online February 8, 2023; DOI: https://doi.org/10.1007/s12275-023-00023-x

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With the growing threat of antibiotic resistance, researchers around the globe are seeking alternatives to stem bacterial pathogenesis. One such alternative is bacteriocins, proteins produced by bacterial species to inhibit the growth and viability of related bacterial species. With their diverse mechanisms, which include pore formation and nuclease activities, and narrow spectrum of activities, which limit their impact to only certain bacterial species, unlike many chemical antibiotics, bacteriocins offer intriguing possibilities to selectively control individual bacterial populations. Within this review, therefore, we highlight current research exploring the application of colicins and microcins, a subset of bacteriocins, with an emphasis on their activities against drug-resistant pathogens, both in in vitro and in vivo settings.

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Isolation, Genomics-Based and Biochemical Characterization of Bacteriocinogenic Bacteria and Their Bacteriocins, Sourced from the Gastrointestinal Tract of Meat-Producing Pigs
Ester Sevillano, Irene Lafuente, Nuria Peña, Luis M. Cintas, Estefanía Muñoz-Atienza, Pablo E. Hernández, Juan Borrero
International Journal of Molecular Sciences.2024; 25(22): 12210. CrossRef
Intelligent Biological Networks: Improving Anti-Microbial Resistance Resilience through Nutritional Interventions to Understand Protozoal Gut Infections
Avinash V. Karpe, David J. Beale, Cuong D. Tran
Microorganisms.2023; 11(7): 1800. CrossRef
Pairing Colicins B and E5 with Bdellovibrio bacteriovorus To Eradicate Carbapenem- and Colistin-Resistant Strains of Escherichia coli
Sumudu Upatissa, Wonsik Mun, Robert J. Mitchell, Minsu Kim
Microbiology Spectrum.2023;[Epub] CrossRef
Bacteriocin-Producing Escherichia coli Q5 and C41 with Potential Probiotic Properties: In Silico, In Vitro, and In Vivo Studies
Veronika S. Mihailovskaya, Dmitry A. Sutormin, Marina O. Karipova, Anna B. Trofimova, Victor A. Mamontov, Konstantin Severinov, Marina V. Kuznetsova
International Journal of Molecular Sciences.2023; 24(16): 12636. CrossRef

Journal Article

Paenibacillus lycopersici sp. nov. and Paenibacillus rhizovicinus sp. nov., isolated from the rhizosphere of tomato (Solanum lycopersicum): Shin Ae Lee , Tae-Wan Kim , Mee-Kyung Sang , Jaekyeong Song , Soon-Wo Kwon , Hang-Yeon Weon; J. Microbiol. 2020;58(10):832-840. Published online September 29, 2020; DOI: https://doi.org/10.1007/s12275-020-0258-2

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Abstract

Two Gram-stain-positive, rod-shaped, endospore-forming bacteria, designated 12200R-189T and 14171R-81T were isolated from the rhizosphere of tomato plants. The 16S rRNA gene sequence similarity between strains 12200R-189T and 14171R-81T were 97.2%. Both strains showed the highest 16S rRNA gene sequence similarities to Paenibacillus sacheonensis SY01T (96.3% and 98.0%, respectively). The genome of strain 12200R-189T was approximately 6.7 Mb in size with 5,750 protein-coding genes (CDSs) and the G + C content was 58.1 mol%, whereas that of strain 14171R-81T comprised one chromosome of 7.0 Mb and two plasmids (0.2 Mb each) with 6,595 CDSs and the G + C content was 54.5 mol%. Comparative genome analysis revealed that average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values among 12200R-189T, 14171R-81T, and other closely related species were below the cut-off levels 95% and 70%, respectively. Strain 12200R-189T grew at a temperature range of 15–40°C, pH 6.0–9.0, and 0–3% NaCl (w/v), whereas strain 14171R-81T grew at a temperature range of 10–37°C, pH 6.0– 8.0, and 0–1% NaCl (w/v). Menaquinone-7 (MK-7) was the only isoprenoid quinone detected in both strains. The predominant cellular fatty acids (> 10%) were iso-C15:0, anteiso- C15:0, and iso-C16:0. The polar lipids of strain 12200R- 189T were diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), aminophospholipid (APL), phospholipid (PL), phosphatidylglycolipid (PGL), and four aminophosphoglycolipids (APGLs) and those of strain 14171R-81T were DPG, PG, PE, APL, three PLs, two PGLs, and three APGLs. Based on phylogenetic, genomic, phenotypic, and chemotaxonomic analyses, strains 12200R- 189T and 14171R-81T represent two novel species of the genus Paenibacillus, for which the names Paenibacillus lycopersici sp. nov. and Paenibacillus rhizovicinus sp. nov. are proposed. The type strains are 12200R-189T (= KACC 19916T = CCTCC AB 2020027T) and 14171R-81T (= KACC 19915T = CCTCC AB 2020026T).

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Description and genomic characterization of Jiella flava sp. nov., isolated from Acrostichum aureum
Ming-Sheng Chen, Xiu-Long Pu, Ming-Dan Weng, Li Chen, Lan-Ying Zhu, Li Tuo
International Journal of Systematic and Evolutionary Microbiology .2022;[Epub] CrossRef
Jiella sonneratiae sp. nov., a novel endophytic bacterium isolated from bark of Sonneratia apetala
Ming-Sheng Chen, Hai-Bo Yi, Zi-Hao Huang, Xiao-Rui Yan, Xiao-Hui Chen, Xiao Ma, Zhou-Qing Zheng, Li Tuo
International Journal of Systematic and Evolutionary Microbiology .2022;[Epub] CrossRef
Paenibacillus vietnamensis sp. nov., isolated from the rhizosphere soil of Arachis hypogaea
Minh Hong Nguyen, Mai Thi Ngoc Dinh, Keun Chul Lee, Ji-Sun Kim, Thao Kim Nu Nguyen, Jung-Sook Lee
International Journal of Systematic and Evolutionary Microbiology .2022;[Epub] CrossRef
Effect of exopolysaccharides of Paenibacillus polymyxa rhizobacteria on physiological and morphological variables of wheat seedlings
Irina V. Yegorenkova, Kristina V. Tregubova, Alexander I. Krasov, Nina V. Evseeva, Larisa Yu. Matora
Journal of Microbiology.2021; 59(8): 729. CrossRef

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