C. perfringens: Difference between revisions
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==Description and Significance== | ==Description and Significance== | ||
In the 1890s, Clostridium perfringens was known as Clostridium welchii. F.W. Andrewes and E. Klein linked C. perfringens to many food-born outbreaks at the time. C. perfringens is a gram-positive, anaerobic, spore-forming bacterium. Furthermore, it is a non | In the 1890s, <i>Clostridium perfringens</i> was known as <i>Clostridium welchii</i>. F.W. Andrewes and E. Klein linked <i>C. perfringens</i> to many food-born outbreaks at the time. <i>C. perfringens</i> is a gram-positive, anaerobic, spore-forming bacterium. Furthermore, it is a non-motile, mesophillic, encapsulated rod with square ends shaped microorganism. <i>C. perfringens</> is found virtually everywhere in nature, except in the sand of the Sahara desert, because it is spore-forming. It is common in soil, but has also been found in decaying vegetation, in the intestinal tract of humans and animals, in insects, and in marine sediment. <i>C. perfringens</i> produces acetone, butanol, ethanol, butyric acid, acetic acid, propionic acid, lactic acid, carbon dioxide and hydrogen. In addition, it ferments sugars, starch and pectin. <i>C. perfringens</i> is the most common cause of clostridial gas gangrene; it has been known to cause 80-90% of human cases. | ||
==Genome Structure== | ==Genome Structure== | ||
Revision as of 03:52, 15 April 2011
Classification
Genus: Clostridium
Species: Perfringens
Domain: Bacteria
Phylum: Firmicutes
Order: Clostridiales
Class: Clostridia
Species
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NCBI: Taxonomy |
Genus species
Description and Significance
In the 1890s, Clostridium perfringens was known as Clostridium welchii. F.W. Andrewes and E. Klein linked C. perfringens to many food-born outbreaks at the time. C. perfringens is a gram-positive, anaerobic, spore-forming bacterium. Furthermore, it is a non-motile, mesophillic, encapsulated rod with square ends shaped microorganism. C. perfringens</> is found virtually everywhere in nature, except in the sand of the Sahara desert, because it is spore-forming. It is common in soil, but has also been found in decaying vegetation, in the intestinal tract of humans and animals, in insects, and in marine sediment. C. perfringens produces acetone, butanol, ethanol, butyric acid, acetic acid, propionic acid, lactic acid, carbon dioxide and hydrogen. In addition, it ferments sugars, starch and pectin. C. perfringens is the most common cause of clostridial gas gangrene; it has been known to cause 80-90% of human cases.
Genome Structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence?
Cell Structure, Metabolism and Life Cycle
Interesting features of cell structure; how it gains energy; what important molecules it produces.
Ecology and Pathogenesis
Habitat; symbiosis; biogeochemical significance; contributions to environment.
If relevant, how does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
References
Author
Page authored by _____, student of Prof. Doreen Cunningham at Saint Augustine's College.
