Bacillus brevis

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Bacillus brevis
Scientific classification
Kingdom: Bacteria
Phylum: Firmicutes
Class: Bacilli
Order: Bacillales
Family: Bacillaceae
Genus: Bacillus
Species: B. brevis
Binomial name
Bacillus brevis

Bacillus brevis is a Gram-positive aerobic spore-forming bacillus commonly found in soil, air, water, and decaying matter. It is rarely associated with infectious diseases.[1] The antibiotics gramicidin and tyrocidine were first isolated from it. [2]

Bacillus brevis forms gram positive (variable) rods with optimal growth of 35-55C. It is a motile spore former with positive catalase activity. Amylase negative, casein negative, gelatinase positives, indole negative, VP negative and most are citrate utilizers.


  1. Pearce, Paul. "Laboratory Evaluation of Endoscope Water Bottles." EndoNurse. 2005. 17 Jun 2006 <Laboratory Evaluation of Endoscope Water Bottles>.
  2. Abedon, Stephen. "Bacteria Binomials." 26 Apr 1998. Ohio State University. 17 Jun 2006 <>.