Jordan.Arredondo
Classification
Domain: Bacteria
Kingdom: Eubacteria
Phylum: Firmicutes
Class: Bacilli
Order: Bacillales
Family: Bacillaceae
Genus: Bacliiius
NCBI link to find]
Species
|
NCBI: Taxonomy |
Genus species: Bacillus Cereus
Habitat Information
Describe the location and conditions under which the organism was isolated.
After taking my original soil sample from the loading docks area on Town Lake, off of the shores of the Colorado River and yielding no substantial growth on the agar plate containing 12 samples, I began to work with another student's gram positive sample on 2/27/15.
Basically this aerobic bacteria is found all around the world, near vegetative growth.
This Bacteria has optimum growth conditions and they are as follows: 1.) 28 - 35 degress celsius 2.) Oxygen 3.) Sediment 4.) Food products act as a host
Description and Significance
Describe the appearance (colonial and cellular), possible antimicrobial activity etc. of the organism, and why the organism might be significant.
This organism is a large, rod-shaped, endospore forming gram positive bacteria. Bacillus Cereus is said to be most closely related to Bacillus Anthracis, which causes Anthrax!!! and also related to Bacillus thuringiensis, which is found in some insect pesticides.
Without stating where, the bacteria was first isolated in 1969 from a man with a fatal case of pneumonia, samples taken from his blood and lung fluid.
https://microbewiki.kenyon.edu/index.php/Bacillus_cereus
http://textbookofbacteriology.net/B.cereus.html
Genome Structure
Describe the size and content of the genome.
How many chromosomes? 5481 genes
Circular or linear? Circular
Other interesting features? 1. A cluster within the genome encodes for an arginine deiminiase metabolic pathway that is said to have a role in it's survival with the resistance from acidic type conditions. The arginine deiminase produces ammonia and that is what protects the cells from high acidic environments until the levels rose to level out.
2.
What is known about its sequence?
Include S Ribosomal sequence that you obtained from PCR and sequencing here.
https://microbewiki.kenyon.edu/index.php/Bacillus_cereus
http://www.ncbi.nlm.nih.gov/pubmed/2843090
Cell Structure, Metabolism and Life Cycle
Interesting features of cell structure; how it gains energy; what important molecules it produces.
Physiology and Pathogenesis
Biochemical characteristics, enzymes made, other characteristics that may be used to identify the organism; contributions to environment (if any).
If relevant, how does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
References
Author
Page authored by Jordan Arredondo, student of Prof. Kristine Hollingsworth at Austin Community College.
