| Evansella clarkii |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Evansella, Evansella clarkii (Nielsen et
al. 1995) Gupta et al. 2020.
Synonym: Bacillus clarkii Nielsen, Fritze & Priest 1995.
al. 1995) Gupta et al. 2020.
Synonym: Bacillus clarkii Nielsen, Fritze & Priest 1995.
Gram-positive rods, 0.6-0.7 x 2.0-5.0 µm. Subterminally, ellipsoidal endospores
(0.5-0.7 x 0.7-1.0 µm) in unswollen / swollen sporangia.
(0.5-0.7 x 0.7-1.0 µm) in unswollen / swollen sporangia.
Colonies are smooth, creamy-white to yellow, circular, with entire margins. Strictly
alkaliphilic and moderately halophilic organism. Grow at ph 9-10 (optimum); no
growth at pH 5-7. NaCl is required for growth; grow in 5-16% NaCl media.
temperature range 15-45 ºC. Allantoin or urate are not required for growth.
alkaliphilic and moderately halophilic organism. Grow at ph 9-10 (optimum); no
growth at pH 5-7. NaCl is required for growth; grow in 5-16% NaCl media.
temperature range 15-45 ºC. Allantoin or urate are not required for growth.
Isolated from mud and soil.
Undetermined.
- 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. - Gupta RS, Patel S, Saini N, Chen S. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae
genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal
for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species. Int J Syst Evol
Microbiol 2020; 70:5753-5798.
Positive results for hydrolysis of hippurate, hydrolysis of gelatin, nitrate reduction, hydrolysis of casein, hydrolysis of Tween 40 and
Tween 60.
Negative results for hydrolysis of starch, hydrolysis of Tween 20 and Tween 80. Strain didn't grow in Voges-Proskauer test and in
tests for the acidification of: L-arabinose , D-glucose, D-mannitol, D-mannose, methyl beta-xyloside, glycerol, glycogen, salicin, starch
and D-xylose.
Variable results for deamination of phenylalanine and hydrolysis of urea.
Tween 60.
Negative results for hydrolysis of starch, hydrolysis of Tween 20 and Tween 80. Strain didn't grow in Voges-Proskauer test and in
tests for the acidification of: L-arabinose , D-glucose, D-mannitol, D-mannose, methyl beta-xyloside, glycerol, glycogen, salicin, starch
and D-xylose.
Variable results for deamination of phenylalanine and hydrolysis of urea.
(c) Costin Stoica
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