Alicyclobacillus fastidiosus

Alicyclobacillus fastidiosus is a species of Gram positive, strictly aerobic, bacterium. The bacteria are acidophilic and produce endospores. It was first isolated from apple juice. The species was first described in 2007, and the name refers to the fastidious nature of the organism; the bacteria would start to die off after 7 days when plated on typical agar for isolating Alicyclobacillus. Additionally, the species produced fewer spores than other members of its genus, and took much longer to produce the spores (i.e. several days versus 10 days).[1]

Alicyclobacillus
Scientific classification
Domain:
Bacteria
Division:
Firmicutes
Class:
Bacilli
Order:
Bacillales
Family:
Alicyclobacillaceae
Genus:
Alicyclobacillus
Species:
A. fastidiosus
Binomial name
Alicyclobacillus fastidiosus
Goto et al. 2007

The optimum growth temperature for A. fastidiosus is 40–45 °C, and can grow in the 20–55 °C range. The optimum pH is 4.0–4.5, and cannot grow at pH 2.0 or pH 5.5.[1]

A. fastidiosus was found during a Japanese survey of various beverages and environments, which also discovered 5 other species of Alicyclobacillus: A. contaminans, A. kakegawensis, A. macrosporangiidus, A. sacchari, and A. shizuokensis.[1]

References
  1. Goto, K; Mochida, K; Kato, Y; Asahara, M; Fujita, R; An, S.-Y; Kasai, H; Yokota, A (2007). "Proposal of six species of moderately thermophilic, acidophilic, endospore-forming bacteria: Alicyclobacillus contaminans sp. nov., Alicyclobacillus fastidiosus sp. nov., Alicyclobacillus kakegawensis sp. nov., Alicyclobacillus macrosporangiidus sp. nov., Alicyclobacillus sacchari sp. nov. And Alicyclobacillus shizuokensis sp. nov". International Journal of Systematic and Evolutionary Microbiology. 57 (6): 1276–1285. doi:10.1099/ijs.0.64692-0. PMID 17551043.
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