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Determination of copy number and circularization ratio of Tn916-Tn1545 family of conjugative transposons in oral streptococci by droplet digital PCR

Permanent link
https://hdl.handle.net/10037/14554
DOI
https://doi.org/10.1080/20002297.2018.1552060
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Date
2018-12-06
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Lunde, Tracy Munthali; Al-Haroni, Mohammed; Roberts, Adam P.
Abstract

Background: Tn916 and Tn1545 are paradigms of a large family of related, broad host range, conjugative transposons that are widely distributed in bacteria and contribute to the spread of antibiotic resistance genes (ARGs). Variation in the copy number (CN) of Tn916-Tn1545 elements and the circularization ratio (CR) may play an important role in propagation of ARGs carried by these elements.

Objectives and Design: In this study, the CN and CR of Tn916-Tn1545 elements in oral streptococci were determined using droplet digital PCR (ddPCR). In addition, we investigated the influence of tetracycline on the CR of Tn916-Tn1545 elements.

Results: The ddPCR assay designed in this study is a reliable way to rapidly determine CN and CR of Tn916-Tn1545 elements.

Conclusions: Our data also suggest that Tn916-Tn1545 elements are generally stable without selective pressure in the clinical oral Streptococcus strains investigated in this study.

Is part of
Lunde, T.M. (2022). Antibiotic Resistance in Oral Streptococci: The prevalence, diversity, stability, and fitness cost of Tn916 -Tn1545 family in oral streptococcal isolates. (Doctoral thesis). https://hdl.handle.net/10037/24192.
Publisher
Taylor & Francis Open
Citation
Lunde, T.M., Al-Haroni, M. & Roberts, A.P. (2018). Determination of copy number and circularization ratio of Tn916-Tn1545 family of conjugative transposons in oral streptococci by droplet digital PCR. Journal of Oral Microbiology, 11(1). https://doi.org/10.1080/20002297.2018.1552060
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