Bacillus nealsonii
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Bacillus, Bacillus nealsonii  
Venkateswaran, Kempf, Chen, Satomi, Nicholson and Kern 2003.
Description is based upon a single isolate.
Gram-positive, motile rods, 1.0 x 4.0-5.0 µm.  Produce 0.5 x 1.0 µm,  ellipsoidal
endospores in unswollen sporangia; spores bear an additional extraneous layer
similar to an exosporium.
Young colonies on TSA are 3-4 mm in diameter, irregular, rough and umbonate with
undulate or lobate edges, beige.
Facultatively anaerobic. Growth temperature 25-55 ºC; pH 6-10. Grow in 0-8% NaCl
medium. NaCl, alantoin or urate are not required for growth.
Isolated from dust particles collected at a spacecraft-assembly facility. Spores are resistant to UV, gamma-radiation, dessication and  
H
2O2 .
Unknown.
  1. N.A. Logan and P. De Vos, 2009. Genus I.  Bacillus  Cohn 1872. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W. Ludwig, F.
    A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes, Springer, 21-127.
  2. K. Venkateswaran,M. Kempf,F. Chen,M. Satomi,W. Nicholson and R. Kern, 2003. Bacillus nealsonii sp. nov., isolated from a
    spacecraft-assembly facility, whose spores are gamma-radiation resistant. IJSEM 53, 165-172.
  3. Zhang XX, Gao JS, Zhang L, Zhang CW, Ma XT, Zhang J. Bacillus oryzisoli sp. nov., isolated from rice rhizosphere. Int J Syst Evol
    Microbiol 2016; 66:3432-3436.
  4. Tuo L, Liu F, Yan XR, Liu Y. Bacillus taxi sp. nov., a novel endophytic bacterium isolated from root of Taxus chinensis (Pilger) Rehd.
    Int J Syst Evol Microbiol 2020; 70:481-486.
Positive results for beta-galactosidase, catalase, acid production from: L-arabinose, N-acetyl-D-glucosamine, D-arabitol, cellobiose,
D-fructose, galactose, beta-gentibiose, gluconate, glycerol, 2- or 5-ketogluconate, lactose, lyxose,
maltose, D-mannitol, D-mannose,
melezitose, melibiose, raffinose, rhamnose, sorbitol, salicin, starch, sucrose,
D-tagatose, trehalose and D-xylose.

Negative results for amylase, alginase, arginine dihydrolase, gelatinase, lysine decarboxylase, ornithine decarboxylase, tryptophan
deaminase, indole production, H
2S production, lipase, nitrate reduction, oxidase, starch hydrolysis, urease, Voges-Proskauer, citrate
utilization, acid production from:
methyl alpha-D-glucoside, methyl beta-xyloside, glycogen, adonitol and ribose.

Variable results for
caseinase, acid production from glucose and inositol.
(c) Costin Stoica
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