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Infection of Tick Cells By Two Nonpathogenic Strains of Rickettsia

Published online by Cambridge University Press:  02 July 2020

Ann T. Palmer ,
Ulrike G. Munderloh  and
Timothy J. Kurtti
Ann T. Palmer
Affiliation:
Department of Entomology, University of Minnesota, St. Paul, Minnesota55108
Ulrike G. Munderloh
Affiliation:
Department of Entomology, University of Minnesota, St. Paul, Minnesota55108
Timothy J. Kurtti
Affiliation:
Department of Entomology, University of Minnesota, St. Paul, Minnesota55108
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Extract

Ticks harbor several different genera of endosymbiotic bacteria. These obligate intracellular bacteria, most of which appear to be nonpathogenic for the tick, persist in nature by being transmitted transovarially from generation to generation. Those in the genus Rickettsiabelong to the spotted fever group (SFG) of rickettsia which includes both mammalian pathogenic and nonpathogenic species. The species that cause spotted fevers in humans, e.g. Rickettsia rickettsii, are well characterized but those not known to cause disease remain poorly understood. Transmission electron microscopy on SFG rickettsia cultured in tick cell cultures offers a powerful way to examine dynamic host parasite interactions in these apparently nonpathogenic SFG species.

We have successfully isolated two unknown, nonpathogenic rickettsia strains in tick cell lines. T2 was isolated from an Ixodes ricinus tick collected in the English Garden in Munich, Germany and is propagated in an Ixodes scapularis cell line, ISE6.

Type
Microbiology
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 1140 - 1141
Copyright
Copyright © Microscopy Society of America

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References

1.Munderloh, U. G et al. Microscopy and Microanalysis 4(1998)115-121.CrossRefGoogle Scholar
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4. This research was supported by Public Health Service Grant AR37909 from the National Institutes of Health.Google Scholar