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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Brochothrix thermosphacta
Etymology: Genus name: a thread with a loop.
Species epithet: killed by heat.
Significance:B. thermosphacta is of great concern in the food industry as product (meat) destroyer.
  [Important]   
Alternative Species Name(s):Microbacterium thermosphactum
Taxonomy:
Phylum
Firmicutes
Class
Bacilli
Order
Bacillales
Family
Listeriaceae 
Genus
Brochothrix
Type Strain: ATCC 11509
Macromorphology (smell): Small opaque colonies (0.75-1 mm in diameter). Does not give hemolysis on blood agar.
Micromorphology: Nonmotile rod (0.6-0.75 x 1-2 µm). May form chains (or filaments), which form one or several loops at one end.
Gram +/Gram -:G+
Metabolism: Facultatively anaerobic
Catalase/Oxidase:+/-
Other Enzymes: DNase -, lecithinase -, hippurikase -, tryptophanase -.
Biochemical Tests: Methyl red +, Voges-Proskauer +.
Spec. Char.: Psychrotrophic, optimal growth temperature: 20-25°C, but can grow between 0 and 35°C.
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
M58798 (T) 1 552  

Taxonomy/phylogeny:
 
Two species within the genus Brochothrix have been described.
Comment:Tolerate 10% NaCl and can grow in up to 20% CO2. Not affected by vacuum packing or modified atmosphere.
Updated:2018-12-18

News

New names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

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