Functionality of Tn916 in Paenibacillus larvae
| Autor: | Douglas W. Dingman |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Transposable element DNA Bacterial American foulbrood Tetracycline 030106 microbiology Bacterial genome size Biochemistry Microbiology 03 medical and health sciences Paenibacillus stomatognathic system Genetics medicine Molecular Biology Southern blot biology Circular bacterial chromosome Paenibacillus larvae Tetracycline Resistance General Medicine Gene Expression Regulation Bacterial biochemical phenomena metabolism and nutrition Chromosomes Bacterial biology.organism_classification Mutagenesis Insertional Conjugation Genetic DNA Transposable Elements bacteria Bacteria medicine.drug |
| Zdroj: | Archives of microbiology. 199(3) |
| ISSN: | 1432-072X |
| Popis: | The conjugative transposon Tn916 was determined to be functional in Paenibacillus larvae in regard to expression of tetracycline resistance and conjugative transfer. Expression of erythromycin resistance, using Tn916ΔE, was also observed. Conjugative transfer experiments employing Paenibacillus popilliae strains Tc1001 and Em1001 as transposon donors and experiments using different P. larvae subspecies or different transposon-containing strains demonstrated interspecies and intraspecies transfer occurred for Tn916 and Tn916ΔE. Southern hybridization analysis of several Tn916-containing P. larvae isolates showed that the transposon randomly inserted into the bacterial chromosome with an indication that hot spot insertion had occurred. Hybridization analysis indicated single-copy insertion of Tn916 into the genome predominated. However, selection of multiple-resistant isolates (i.e., isolates containing Tn916 and Tn916ΔE) demonstrated that multiple copies of the transposon could coexist in the bacterial genome. Growth of transposon-containing isolates in broth medium in the absence of selective antibiotic pressure showed that Tn916 and Tn916ΔE were stably maintained in the bacterium. |
| Databáze: | OpenAIRE |
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