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Taxonomy
Morphology
Growth conditions
Biochemical characters
Ecology
Pathogenicity
References
Bacteria => Firmicutes => Bacilli => Bacillales => Bacillaceae => Bacillus => Bacillus thuringiensis Berliner (1915)
Synonyms: Bacillus cereus var. thuringiensis Smith, Gordon and Clarck (1952).
Hystorical synonyms: B. cereus var. alesti Toumanoff and Vago (1951), B. dendrolimus Talalaev (1956), B. entomocidus var.
entomocidus Heimpel and Angus (1958), B. entomocidus var. subtoxicus Heimpel and Angus (1958), B. ephestiae ( Metalnikov and
Chorine ,1929) Steinhaus (1949), B. finitimus Heimpel and Angus (1958), B. soto Metalnikov and Chorine (1927), B. bombycis
Macchiati (1891), B. anagastae Heimpel (1967), B. tolworthi de Barjac and Bonnefoi (1968), B. darmstadiensis Krieg, de Barjac and
Bonnefoi (1968), B. toumanoffii Krieg (1969), B. morrisoni de Barjac and Bonnefoi (1968), B. aizawai Hempel (1967), B. pacificus
Hempel (1967), B. galleriae Hempel (1967), B. kenyae de Barjac and Bonnefoi (1967), B. amuscatoxicus Hempel (1967).
Synonyms: Bacillus cereus var. thuringiensis Smith, Gordon and Clarck (1952).
Hystorical synonyms: B. cereus var. alesti Toumanoff and Vago (1951), B. dendrolimus Talalaev (1956), B. entomocidus var.
entomocidus Heimpel and Angus (1958), B. entomocidus var. subtoxicus Heimpel and Angus (1958), B. ephestiae ( Metalnikov and
Chorine ,1929) Steinhaus (1949), B. finitimus Heimpel and Angus (1958), B. soto Metalnikov and Chorine (1927), B. bombycis
Macchiati (1891), B. anagastae Heimpel (1967), B. tolworthi de Barjac and Bonnefoi (1968), B. darmstadiensis Krieg, de Barjac and
Bonnefoi (1968), B. toumanoffii Krieg (1969), B. morrisoni de Barjac and Bonnefoi (1968), B. aizawai Hempel (1967), B. pacificus
Hempel (1967), B. galleriae Hempel (1967), B. kenyae de Barjac and Bonnefoi (1967), B. amuscatoxicus Hempel (1967).
Gram positive, 1.1 / 1.7-3.0 μm, variable motility. Ellipsoidal, central or paracentral spore, not deforming the sporangia appreciably.
Parasporal bodies within the sporangia. No capsule present. The bacilli tend to occur in chains.
Parasporal bodies within the sporangia. No capsule present. The bacilli tend to occur in chains.
Growth temperature from 10-15 ºC to 40-45 ºC.
-growth in anaerobic agar
-growth in nutrient broth
-growth in 7% NaCl
-growth at 5,7 pH
-growth in anaerobic agar
-growth in nutrient broth
-growth in 7% NaCl
-growth at 5,7 pH
Spores are widespread.
Insect larvae pathogen (mosquito, Lepidoptera etc.) by toxins synthesis. Used as bio-pesticide. Some strains of B. thuringiensis may
produce the B. cereus diarrheal toxin.
B. thuringiensis has been implicated in cases of gastroenteritis and wound , burn and ocular infections.
produce the B. cereus diarrheal toxin.
B. thuringiensis has been implicated in cases of gastroenteritis and wound , burn and ocular infections.
- Gordon R.E., Haynes W.C., Pang C.H. (1973) – The genus Bacillus . Agriculture Handbook No. 427, U.S.D.A., Washington D.C.
- Buchanan R.E., Gibbons N.E., Cowan S.T., Holt J.G., Liston J., Murray R.G.E., Niven C.F., Ravin A.W., Stanier R.W. ( 1974) –
Bergey’s Manual of Determinative Bacteriology, Eight Edition, The Williams & Wilkins Company, Baltimore. - Logan N. A., 2005.Bacillus anthracis, Bacillus cereus, and other aerobic endospore-forming bacteria. In: Topley & Wilson’s
Microbiology & Microbial Infections, 10 th Edition, Edited by Boriello S.P., Murray P.R., Funke G, Bacteriology, vol. 2, 922-952.
Acid from glucose, trehalose, glycogen = positive
Acid from mannitol,arabinose, xilose, alfa-metyl-D-mannoside = negative
Catalase, hydrolase of starch, reduction of nitrate to nitrite, decomposition of casein,
Voges-Proskauer, resistance to lysozyme, use of citrate, gelatin liquefaction, egg yolk
reaction, formation of alkali in litmus milk, deamination of phenylalanine in 7 days,
alkaline digestion of litmus milk & arginine dihydrolase = positive
Gas from carbohydrates & indole = negative
Urease, acid from D-mannose, & decomposition of tyrosine = variable.
Acid from mannitol,arabinose, xilose, alfa-metyl-D-mannoside = negative
Catalase, hydrolase of starch, reduction of nitrate to nitrite, decomposition of casein,
Voges-Proskauer, resistance to lysozyme, use of citrate, gelatin liquefaction, egg yolk
reaction, formation of alkali in litmus milk, deamination of phenylalanine in 7 days,
alkaline digestion of litmus milk & arginine dihydrolase = positive
Gas from carbohydrates & indole = negative
Urease, acid from D-mannose, & decomposition of tyrosine = variable.
(c) Costin Stoica
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