| Salisediminibacterium selenitireducens |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Salisediminibacterium,
Salisediminibacterium selenitireducens (Switzer Blum et al. 2001) Gupta et al. 2020.
Synonym: Bacillus selenitireducens Switzer Blum et al. 2001. Species description is based on a single isolate.
Salisediminibacterium selenitireducens (Switzer Blum et al. 2001) Gupta et al. 2020.
Synonym: Bacillus selenitireducens Switzer Blum et al. 2001. Species description is based on a single isolate.
Gram-positive, nonmotile, 0.5 x 2-6 µm, nonspore-forming rods.
Produce red colonies on lactate/selenite/yeast extract-supplemented lake water
medium incubated anaerobically at 20 ºC. Shows weak microaerobic growth and
anaerobic respiratory growth with Se(IV) (selenite), As(V) (arsenate), nitrate, nitrite,
trimethylamine oxide and fumarate as electron acceptors; quantitatively reduces Se(IV)
to Se (0) (elemental selenium) during growth. Moderately halophilic, with salinity
optimum of 24-60 g/l NaCl; moderately alkaliphilic. NaCl is required for growth. Grow in
2-10% NaCl broth. Optimum pH: 9-10. Allantoin or urate are not required for growth.
medium incubated anaerobically at 20 ºC. Shows weak microaerobic growth and
anaerobic respiratory growth with Se(IV) (selenite), As(V) (arsenate), nitrate, nitrite,
trimethylamine oxide and fumarate as electron acceptors; quantitatively reduces Se(IV)
to Se (0) (elemental selenium) during growth. Moderately halophilic, with salinity
optimum of 24-60 g/l NaCl; moderately alkaliphilic. NaCl is required for growth. Grow in
2-10% NaCl broth. Optimum pH: 9-10. Allantoin or urate are not required for growth.
Isolated from arsenic-rich sediment of Mono Lake, California
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 catalase and nitrate reduction. Negative results for oxidase and citrate utilization.
(c) Costin Stoica
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