Difference between revisions of "Turkey astrovirus"
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[http://www.ncbi.nlm.nih.gov/Taxonomy/ NCBI] link to find]
Revision as of 07:18, 17 December 2008
Higher order taxa
Virus; ssRNA positive-strand viruses, no DNA stage; Astroviridae; Avastrovirus
NCBI link to find]
Description and significance
Astrovirus originated from ‘astron’, a Greek word for star because of the five-pointed or six-pointed side projection which can be detected by negative stained electron microscopy (EM). They were first described by Madeley & Cosgrove in 1975 as the causal for gastroenteritis in infants. Astrovirus disease is known as the causal for gastroenteritis, it is usually mild but more serious cases have been discovered in poultry. Astrovirus is most commonly found in turkeys and can lead to mortality. In 1980, turkey astrovirus was first described and was linked with turkey poults in the UK that were suffering from diarrhea and increased mortality. They were discovered in the U.S. the same year. Although replication is only routinely detected in the intestines, experimentally infected poults show thymus and bursal atrophy and the virus can be isolated in other tissues.
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 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.
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 Emily Lilly at University of Massachusetts Dartmouth.