Biology:Salibacterium

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Salibacterium is a genus of Gram-positive bacteria from the family of Bacillaceae.[1][2][3] The type species is Salibacterium halotolerans.[1]

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. [4][5]

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).[5] Together, Salibacterium translates to a rod from salt.

Biochemical Characteristics and Molecular Signatures

Source:[5]

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.[5] 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.

Phylogeny

Salibacterium, as of May 2021, contains a total of 7 species with validly published names. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[1] and National Center for Biotechnology Information (NCBI).[6]

16S rRNA based LTP_10_2024[7][8][9] 120 marker proteins based GTDB 09-RS220[10][11][12]
Salibacterium
 

S. salarium (Lim et al. 2006) Gupta et al. 2020

 
 
 

S. aidingense (Xue et al. 2008) Gupta et al. 2020

 
 
 
 

S. halochares (Pappa et al. 2010) Reddy et al. 2015

 
 

S. nitratireducens Singh et al. 2018

 
 
 
 

S. halotolerans Reddy et al. 2015

 
 
 

S. lacus Wang et al. 2018[13]

 
 

S. qingdaonense (Wang et al. 2007) Reddy et al. 2015

 
 
 
 
 
 
Salibacterium
 

S. salarium

 
 
 

S. aidingense

 
 
 

S. halotolerans

 
 

S. qingdaonense

 
 
 
 

See also

References

  1. ↑ 1.0 1.1 1.2 A.C. Parte. "Salibacterium". List of Prokaryotic names with Standing in Nomenclature (LPSN). https://lpsn.dsmz.de/genus/salibacterium. 
  2. ↑ (in en) Salibacterium. https://www.uniprot.org/taxonomy/1884429. 
  3. ↑ Parker, Charles Thomas; Garrity, George M (2015). "Nomenclature Abstract for Salibacterium Reddy et al. 2015." (in en). The NamesforLife Abstracts. doi:10.1601/nm.27815. 
  4. ↑ 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." (in en). International Journal of Systematic and Evolutionary Microbiology 70 (1): 406–438. doi:10.1099/ijsem.0.003775. ISSN 1466-5026. PMID 31617837. 
  5. ↑ 5.0 5.1 5.2 5.3 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" (in en). International Journal of Systematic and Evolutionary Microbiology 70 (11): 5753–5798. doi:10.1099/ijsem.0.004475. ISSN 1466-5026. PMID 33112222. 
  6. ↑ C.L. Schoch. "Salibacterium". National Center for Biotechnology Information (NCBI) taxonomy database. https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Tree&id=1884429&lvl=3&p=has_linkout&p=blast_url&p=genome_blast&lin=f&keep=1&srchmode=1&unlock. 
  7. ↑ "The LTP". https://imedea.uib-csic.es/mmg/ltp/#LTP. 
  8. ↑ "LTP_all tree in newick format". https://imedea.uib-csic.es/mmg/ltp/wp-content/uploads/ltp/LTP_all_10_2024.ntree. 
  9. ↑ "LTP_10_2024 Release Notes". https://imedea.uib-csic.es/mmg/ltp/wp-content/uploads/ltp/LTP_10_2024_release_notes.pdf. 
  10. ↑ "GTDB release 09-RS220". https://gtdb.ecogenomic.org/about#4%7C. 
  11. ↑ "bac120_r220.sp_labels". https://data.gtdb.ecogenomic.org/releases/release220/220.0/auxillary_files/bac120_r220.sp_labels.tree. 
  12. ↑ "Taxon History". https://gtdb.ecogenomic.org/taxon_history/. 
  13. ↑ Parker, Charles Thomas; Garrity, George M (2018). "Nomenclature Abstract for Salibacterium lacus Wang et al. 2018." (in en). The NamesforLife Abstracts. doi:10.1601/nm.31165. 

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. 

Wikidata ☰ Q26283817 entry



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