A Microbial Biorealm page on the genus Shigella
Higher order taxa
Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacteriales; Enterobacteriaceae
Shigella boydii; S. dysenteriae; S. flexneri; S. sonnei
Description and significance
Shigiella is a non spore forming gram negative bacteria that aids in the facilitation of intracellular pathogens. It is able to survive the proteases and acids of the intestinal tract and infections to hosts can be caused from a very low dose. As little as 10 to 100 bacteria are needed to cause infection.
The four difference species of Shigella vary greatly in the genomic structure. The largest species S. sonnei contains 4,825,265 base pairs. S. flexneri contains 4,607,203 base pairs, S. boydii contains 4,519,823 base pairs and the smallest species S. dysenteriae contains 4,369, 232 base pairs.
Cell structure and metabolism
Interesting features of cell structure; how it gains energy; what important molecules it produces.
Habitat; symbiosis; contributions to the environment.
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
Transmission Fecal-oral transmission is the main path of Shigellosis infection however other modes of transmission include ingestion of contaminated food or water, contact with a contaminated inanimate object, and sexual contact. Outbreaks of Shigellosis infection are common in places where sanitation is poor.
Enter summarries of the most rescent research here--at least three required
[Sample reference] Takai, K., Sugai, A., Itoh, T., and Horikoshi, K. "Palaeococcus ferrophilus gen. nov., sp. nov., a barophilic, hyperthermophilic archaeon from a deep-sea hydrothermal vent chimney". International Journal of Systematic and Evolutionary Microbiology. 2000. Volume 50. p. 489-500.
Edited by student of Dr. Kirk Bartholomew