RICKETTSIAE Dr. H. C. Lakshman Professor P.G. Department of Studies in Botany Karnatak University, Dharwad-580003.

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Presentation transcript:

RICKETTSIAE Dr. H. C. Lakshman Professor P.G. Department of Studies in Botany Karnatak University, Dharwad

RICKETTSIAE o Among microbes, Rickettsia has a wonderful name. o As it denotes the name of the American Scientist “Haward Taylor Ricckette” for his valuable contribution in discovery of “Rocky Mountain Spotted fever” o They are obligate intracellular gram negative parasites.

Rocky mountain spotted fever

 This is prokaryotic intracellular parasite smaller than bacteria and bigger than Viruses.  Although is living on Lice, Tickes, Fleas and hosts on Arthropods and Chicken egg.  Very recently, they have been discovered in xylem cells of citrus and live in cattle’s, Goats and water as a medium, because, it does not show motion.

 It do not possess Flagella or Cilia  Do not produce endospores  The organism needs host cells to continue their generation.

The commonly reported diseases in India are  Scrub typhus  Murine flea borne typhus  Indian tick typhus  Q fever

Thank you