Transformation frequencies of a mariner-based transposon system in Rickettsia rickettsii were determined using a plaque assay system for enumeration and isolation of mutants. Sequence analysis of insertion sites in both R. rickettsii and R. prowazekii indicated that insertions were random. Transposon mutagenesis provides a useful tool for rickettsial research.
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http://dx.doi.org/10.1128/JB.05279-11 | DOI Listing |
Vet Microbiol
December 2024
Key Laboratory of Avian Bioproduct Development, Ministry of Agriculture and Rural Affairs, Yangzhou, Jiangsu 225009, PR China; College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, PR China; Institutes of Agricultural Science and Technology Development, Yangzhou University, Ministry of Agriculture and Rural Affairs, Yangzhou, Jiangsu 225009, PR China. Electronic address:
Avian pathogenic Escherichia coli (APEC) constitutes a significant threat to poultry health worldwide, causing colibacillosis and inflicting substantial economic losses. The ability to resist serum-mediated killing is a key virulence factor enabling APEC to circumvent the host immune system and establish systemic infection. In this study, we employed mariner-based transposon mutagenesis to generate a mutant library of APEC strain E058 and screened for mutants with reduced serum resistance.
View Article and Find Full Text PDFPLoS Pathog
December 2022
Department of Microbiology and Immunology, University of South Alabama College of Medicine, Mobile, Alabama, United States of America.
Since its recognition in 1994 as the causative agent of human flea-borne spotted fever, Rickettsia felis, has been detected worldwide in over 40 different arthropod species. The cat flea, Ctenocephalides felis, is a well-described biological vector of R. felis.
View Article and Find Full Text PDFMicrobiol Spectr
April 2022
Department of Restorative Dentistry, Oregon Health and Science University, Portland, Oregon, USA.
Parvimonas micra is a Gram-positive obligate anaerobe and a typical member of the human microbiome. P. micra is among the most highly enriched species at numerous sites of mucosal dysbiotic disease and is closely associated with the development of multiple types of malignant tumors.
View Article and Find Full Text PDFAppl Environ Microbiol
April 2022
Clostridia Research Group, BBSRC/EPSRC Synthetic Biology Research Centre (SBRC), Biodiscovery Institute, School of Life Sciences, The University of Nottinghamgrid.4563.4, Nottingham, United Kingdom.
The majority of the genes present in bacterial genomes remain poorly characterized, with up to one-third of those that are protein encoding having no definitive function. Transposon insertion sequencing represents a high-throughput technique that can help rectify this deficiency. The technology, however, can only be realistically applied to those species in which high rates of DNA transfer can be achieved.
View Article and Find Full Text PDFMol Oral Microbiol
December 2020
MOE Key Laboratory of Industrial Fermentation Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin, China.
Fluoride has been used as an effective anticaries agent for more than 70 years, which might result in the emergence of fluoride-resistant strains. However, the fluoride resistance mechanism and the cariogenic properties of fluoride-resistant mutant for cariogenic bacterial species Streptococcus mutans remain largely unknown. We describe here the construction and characterization of a mariner-based transposon system designed to be used in S.
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