Salibacterium
Salibacterium is a genus of Gram-positive bacteria from the family of Bacillaceae.[1][3][4] The type species is Salibacterium halotolerans.[1]
| Salibacterium | |
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| Genus: | Salibacterium Vishnuvardhan et al. 2015[1] |
| Type species | |
| Salibacterium halotolerans[1] | |
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S. halochares[1] S. aidingense S. nitratireducens S. salarium | |
Salibacterium aidingense and Salibacterium salarium were previously species belonging to Bacillus, a genus that has been recognized as displaying extensive polyphyly and has been restricted by recent phylogenetic studies to only include species closely related to Bacillus subtilis and Bacillus cereus. [5][6]
The name Salibacterium is derived from the prefix "-sali" (from the Latin noun sal/salis, which translates to "salt"), and the suffix "-bacterium" (from the Latin noun bacterium, referring to a rod).[6] Together, Salibacterium translates to a rod from salt.
Biochemical Characteristics and Molecular Signatures[6]
Members of this genus are aerobic or facultatively anaerobic. Most members are non-motile, except S. aidingense which exhibits motility by means of peritrichous flagella. Some members form endospores. All of the members require salt for growth with optimal growth occurring in the presence of 10–12% (w/v) NaCl. Temperature range for growth is 15–45°C, with optimum growth temperature in the range 30-37°C.
Nine conserved signature indels (CSIs) were identified for this genus in the following proteins: GTP-binding protein, CoA-binding protein, nucleoside triphosphatase YtkD, protease modulator HflC, dihydrolipoyl dehydrogenase, DUF3603 family protein, M20/M25/M40 family metallohydrolase, exonuclease SbcCD subunit D and l-arabinose isomerase, which in most cases are exclusively shared by either all or most members of this genus.[6] These CSIs were identified through analyses of genome sequences from Salibacterium species and provide a reliable molecular means of differentiating this genus from other Bacillaceae genera and bacteria.
Taxonomy
Salibacterium, as of May 2021, contains a total of 7 species with validly published names.[1] This branching pattern is also observed in the Genome Taxonomy Database (GTDB).[7]
References
- Parte, A.C. "Salibacterium". LPSN.
- Parker, Charles Thomas; Garrity, George M (2018). Parker, Charles Thomas; Garrity, George M (eds.). "Nomenclature Abstract for Salibacterium lacus Wang et al. 2018". The NamesforLife Abstracts. doi:10.1601/nm.31165.
- "Salibacterium". www.uniprot.org.
- Parker, Charles Thomas; Garrity, George M (2015). Parker, Charles Thomas; Garrity, George M (eds.). "Nomenclature Abstract for Salibacterium Reddy et al. 2015". The NamesforLife Abstracts. doi:10.1601/nm.27815.
- Patel, Sudip; Gupta, Radhey S. (2020-01-01). "A phylogenomic and comparative genomic framework for resolving the polyphyly of the genus Bacillus: Proposal for six new genera of Bacillus species, Peribacillus gen. nov., Cytobacillus gen. nov., Mesobacillus gen. nov., Neobacillus gen. nov., Metabacillus gen. nov. and Alkalihalobacillus gen. nov". International Journal of Systematic and Evolutionary Microbiology. 70 (1): 406–438. doi:10.1099/ijsem.0.003775. ISSN 1466-5026. PMID 31617837.
- Gupta, Radhey S.; Patel, Sudip; Saini, Navneet; Chen, Shu (2020-11-01). "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". International Journal of Systematic and Evolutionary Microbiology. 70 (11): 5753–5798. doi:10.1099/ijsem.0.004475. ISSN 1466-5026. PMID 33112222.
- "GTDB - Tree". gtdb.ecogenomic.org. Retrieved 2021-05-28.
Further reading
- Vishnuvardhan Reddy, S; Thirumala, M; Sasikala, C; Venkata Ramana, C (November 2015). "Salibacterium halotolerans gen. nov., sp. nov., a bacterium isolated from a salt pan, reclassification of Bacillus qingdaonensis as Salibacterium qingdaonense comb. nov. and Bacillus halochares as Salibacterium halochares comb. nov". International Journal of Systematic and Evolutionary Microbiology. 65 (11): 4270–4275. doi:10.1099/ijsem.0.000572. PMID 26338019.