Difference between revisions of "Bacillus Pumilus RTMG"

From MicrobeWiki, the student-edited microbiology resource
Jump to: navigation, search
Line 116: Line 116:
Page authored by Reggie Tuvilla and Maddy Gregory, students of Prof. Kristine Hollingsworth at Austin Community College.
Page authored by Maddy Gregory, students of Prof. Kristine Hollingsworth at Austin Community College.
<!-- Do not remove this line-->[[Category:Pages edited by students of Kristine Hollingsworth at Austin Community College]]
<!-- Do not remove this line-->[[Category:Pages edited by students of Kristine Hollingsworth at Austin Community College]]

Latest revision as of 19:50, 11 August 2019

This student page has not been curated.


Domain: Bacteria

Phylum: Firmicutes

Class: Bacilli

Order: Bacillales

Family: Bacillaceae

Genus: Bacillus

Other Names:


NCBI: Taxonomy

Genus species: Bacillus pumilus

Habitat Information

Latitude: 30.398974 degrees Longitude: -97.704909 degrees

It was a clear day with a temperature of 65 F in the area of central Austin on January 25th 2018. A zip lock bag was used to collect the soil from the area mostly from the surface about a half inch deep. The location of the soil sample was taken from an area close to residential buildings underneath a tree. Rainfall was 0.0" and the pressure was 30.13 inHg. The description of the location was mostly Austin silty clay and urban land. 2-5% slopes and eroded.

Generally this species is found in soil. [2]

Description: Describe the appearance (colonial and cellular), possible antimicrobial activity etc. of the organism.

Cellular: Gram positive

Colonial: rod-shape



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? Include S Ribosomal sequence that you obtained from PCR and sequencing here.



Cell Structure, Metabolism and Life Cycle

Interesting features of cell structure; how it gains energy; what important molecules it produces.

Commonly found in soil and water and it is sprayed on crops to prevent fungal pests such as molds and mildews. Used in nurseries, landscapes, and greenhouses.

This species is generally non-pathogenic although it as been seen in some cases of food poisoning. It is used a probiotic preparation in the treatment of intestinal disorders that fight against fungal infections.

B. subtilis is produces Vit. B12, enzymes, and bacitracin. Their ability to produce antibiotics during sporulation has been helpful for western medicine.

The biofilm communities has a mutualistic (both benefiting) interaction with plant rhizome systems. [1]

Physiology and Pathogenesis


  • Phenol Red Broth Tests: Glucose: positive; Lactose: negative; Sucrose: posititve
  • Starch Hydrolysis Test: positive
  • Casein Hydrolysis Test: positive
  • Gelatin Hydrolysis Test: positive
  • DNA Hydrolysis Test: negative
  • Lipid Hydrolysis Test: positive
  • Methyl Red Test: negative
  • Voges Proskauer Test: positive
  • Citrate Test: positive
  • SIM Tests: negative for all
  • Nitrate Reduction: negative
  • Urea Hydrolysis: positive
  • Triple Sugar Iron Agar: negative for all
  • Oxidase Test: positive
  • Eosin Methylene Blue Agar (EMB) Test: negative
  • Hektoen Enteric Agar (HE) Test: negative
  • MacConkey Agar Test: negative
  • Decarboxylation Tests: Arginine: negative; Lysine: negative; Orinithine: negative
  • Phenylalanine Deaminase Test: negative
  • Catalase Test: positive
  • Blood Agar Test: Beta - Complete Breakdown
  • Mannitol Salt Agar (MSA) Test: negative
  • Phenylethyl Alcohol Agar (PEA) Test: Positive
  • Bacitracin/Optochin Susceptibility Test: Bacitracin: resistant; Optochin: resistant
  • Bile Esculin Test: positive
  • 6.5% Salt Tolerance Test: negative


1. United States. National Center for Biotechnology Information. N.p., n.d. Bacillus pumilus: A ubiquitous soil organism. Web. 29 April 2016. http://www.ncbi.nlm.nih.gov/genome/?term=bacillus%20pumilus

2. Bacillus pumilus SAFR-032. N.p., n.d. Web. 27 April 2016. http://www.genome.jp/kegg-bin/show_organism?org=bpu

3. From, C., Hormazabal, V., and Granum, P. “Food poisoning associated with pumilacidin-producing Bacillus pumilus in rice”. International Journal of Food Microbiology. 2007. Volume 115. p. 319-324.

4. Tena, D., Martinez-Torres, J., Perez-Pomata, M., Saez-Nieto, J., Rubio, V., and Bisquert, J. “Cutaneous infection due to Bacillus pumilus: Report of 3 cases”. Clinical Infectious Diseases. 2007. Volume 44. P. e40-2.


Page authored by Maddy Gregory, students of Prof. Kristine Hollingsworth at Austin Community College.