Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus aerius Shivaji, Chaturvedi, Suresh,
Reddy, Dutt, Wainwright, Narlikar and Bhargava 2006.
Description is based upon a single isolate.
Gram-positive, motile rods, 0.5-2.0 µm, endospores forming.
Colonies are white, irregular, raised, 3-5 mm in diameter. Grow on nutrient agar.
Aerobic growth. Optimum pH 8, range 6-10. Growth temperature 10-37 ºC.
Isolated from cryogenic tubes used for collecting air samples from high altitudes.
Resistant to UV radiation.
Resistant to penicillin (10 µg), nalidixic acid (30 µg), ampicillin (25 µg), kanamycin (30 µg), colistin (10 µg), novobiocin (30 µg),
cotrimoxazole (25 µg), vancomycin (30 µg), tetracycline (30 µg), chloramphenicol (30 µg), erythromycin (15 µg), norfloxacin (10 µg),
ciprofloxacin(30 µg), lincomycin (15 µg), cefoperazone (75 µg), amikacin (30 µg), cefuroxime (30 µg) & amoxicillin (30 µg).
- S. Shivaji, P. Chaturvedi, K. Suresh, G.S.N. Reddy, C.B.S. Dutt, M. Wainwright, J.V. Narlikar and P.M. Bhargava, 2006. Bacillus
aerius sp. nov., Bacillus aerophilus sp. nov., Bacillus stratosphericus sp. nov. and Bacillus altitudinis sp. nov., isolated from
cryogenic tubes used for collecting air samples from high altitudes. IJSEM 56, 1465-1473.
Positive results for oxidase, catalase, beta-galactosidase, hydrolysis of esculin,
hydrolysis of gelatin, nitrate reduction, hydrolysis of starch, Voges-Proskauer test,
citrate utilization, amylase, acid production from: D- or L-arabinose, D-glucose,
D-mannitol, D-mannose, fructose, galactose, lactose, sucrose & D-xylose.
Negative results for arginine dihydrolase, lysine decarboxylase, hydrolysis of urea, indole production & methyl red test.
(c) Costin Stoica