J. E. Olsen

Publications198
h-index32
Citations2,804
Highly Influential Citations181
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Comparative phylogenies of the housekeeping genes atpD, infB and rpoB and the 16S rRNA gene within the Pasteurellaceae.
Phylogenies of housekeeping gene and 16S rRNA gene sequences were compared to improve the classification of the bacterial family Pasteurellaceae and knowledge of the evolutionary relationships of its… Expand
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Bacterial decimation times in anaerobic digestions of animal slurries
Abstract The reductions of pathogenic and indicator bacteria in animal slurry subjected to mesophilic (35°C) and thermophilic (53°C) anaerobic digestion have been measured in small-scale, as well as… Expand
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Diversity and evolution of blaZ from Staphylococcus aureus and coagulase-negative staphylococci.
OBJECTIVES To elucidate the diversity and evolutionary history of plasmid- and chromosomally-located blaZ, to detect indications of frequent exchange of blaZ between human and bovine staphylococci… Expand
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Role of Flagellin and the Two-Component CheA/CheY System of Listeria monocytogenes in Host Cell Invasion and Virulence
ABSTRACT The flagellum protein flagellin of Listeria monocytogenes is encoded by the flaA gene. Immediately downstream of flaA, two genes, cheY and cheA, encoding products with homology to chemotaxis… Expand
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Polyamines Are Required for Virulence in Salmonella enterica Serovar Typhimurium
Sensing and responding to environmental cues is a fundamental characteristic of bacterial physiology and virulence. Here we identify polyamines as novel environmental signals essential for virulence… Expand
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Influences of temperature, salinity and starvation on the motility and chemotactic response of Vibrio anguillarum.
The role of growth factors for the motility and chemotaxis of the fish pathogen Vibrio anguillarum was determined. Cells of V. anguillarum were chemotactic to serine in the temperature range 5-25… Expand
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Increase in the prevalence of oxolinic acid resistant Acinetobacter spp. observed in a stream receiving the effluent from a freshwater trout farm following the treatment with oxolinic acid-medicated…
Acinetobacter spp. were used as bacterial indicators to monitor antimicrobial resistance in a freshwater trout farm before and after treatment with oxolinic acid (OA)-medicated feed. The level of… Expand
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Salmonella source attribution based on microbial subtyping.
Source attribution of cases of food-borne disease represents a valuable tool for identifying and prioritizing effective food-safety interventions. Microbial subtyping is one of the most common… Expand
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Specific identification of Gallibacterium by a PCR using primers targeting the 16S rRNA and 23S rRNA genes.
Gallibacterium was recently established as a new genus including organisms previously reported as Pasteurella anatis, [Actinobacillus] salpingitidis and avian Pasteurella haemolytica-like organisms.… Expand
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Genetic relationships among avian isolates classified as Pasteurella haemolytica, 'Actinobacillus salpingitidis' or Pasteurella anatis with proposal of Gallibacterium anatis gen. nov., comb. nov. and…
Bacteria of the avian [Pasteurella haemolytica]-'Actinobacillus salpingitidis' complex have been associated with different pathological conditions in birds, among which salpingitis and peritonitis in… Expand
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