Synthetic multi-antibiotic resistant plasmids in plant-associated bacteria from agricultural soils

Autor: Silvina Brambilla, Romina Frare, Margarita Stritzler, Gabriela Soto, Carolina Berini, Cintia Jozefkowicz, Nicolás Ayub
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Journal of Global Antimicrobial Resistance, Vol 22, Iss , Pp 113-116 (2020)
Druh dokumentu: article
ISSN: 2213-7165
DOI: 10.1016/j.jgar.2020.01.015
Popis: Objectives: Unlike higher organisms such as domestic animals and cultivated plants, which display a robust reproductive isolation and limited dispersal ability, microbes exhibit an extremely promiscuous gene flow and can rapidly disperse across the planet by multiple ways. Thus, microbial plasmids, including synthetic replicons, containing antibiotic resistance genes are a serious risk to public health. In this short communication, we explored the presence of synthetic elements in alfalfa symbionts (Ensifer meliloti strains) from agricultural soils. Methods: A total of 148 E. meliloti isolates from alfalfa plants growing under field conditions were collected from January 2015 to June 2019. Antimicrobial susceptibility testing was performed under laboratory conditions. We identified five kanamycin-resistant E. meliloti strains (named K1-K5). Whole genome sequencing analysis and conjugations were used to identify and study the plasmids of K strains. Results: We found that the genomes of K strains contain ampicillin, kanamycin and tetracycline resistance genes, the reporter gene lacZ from Escherichia coli and multiple cloning sites. These sequences were found within
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