Thermales

Thermales is an order of bacteria belonging to the Deinococcota phylum.[1] They are particularly resistant to heat, and live in the benthic zone of the Gulf of Mexico.[2]

Thermales
Scientific classification
Kingdom:
Bacteria
Division:
Deinococcota
Class:
Deinococci
Order:
Thermales

Rainey and da Costa 2002[1]
Family:
Thermaceae

da Costa and Rainey 2002[1]
Genera
  • "Allomeiothermus"
  • Calidithermus
  • Marinithermus
  • Meiothermus
  • Oceanithermus
  • Rhabdothermus
  • Thermus
  • Vulcanithermus

Members of the order Thermales can be distinguished from all other bacteria through molecular signatures consisting of conserved signature indels (CSIs) and conserved signature proteins (CSPs) that are exclusively present in members of this order. Specifically, six CSIs were identified in the following proteins: DNA topoisomerase I, ABC transporter permease, citrate synthase, phosphoribosylformylglycinamidine synthase, pyruvate dehydrogenase and alpha-glucan phosphorylase.[3] 51 CSPs were also found to be exclusively shared by members of this order.[3]

In addition, a 76 aa CSI is present in the protein SecA preprotein translocase which is specific to all members of the order Thermales as well as Hydrogenibacillus schlegelii (also an thermophilic species).[4] Based on studies on other CSIs and CSPs, it is likely that some of these CSIs and CSPs could have implications in the thermophilic phenotype of Thermales species.[4]

Phylogeny
16S rRNA based LTP_01_2022[5][6][7] 120 marker proteins based GTDB 07-RS207[8][9][10]
Thermales
Thermaceae
 
 

"Allomeiothermus" Jiao et al. 2022

 
 
 

Calidithermus Raposo et al. 2019

 
 

Meiothermus Nobre et al. 1996

 
 
 
 
 
 

Rhabdothermus Steinsbu et al. 2011

 
 

Vulcanithermus Miroshnichenko et al. 2003

 
 
 
 

Oceanithermus Miroshnichenko et al. 2003

 
 
 

Marinithermus Sako et al. 2003

 
 

Thermus Brock and Freeze 1969 (Approved Lists 1980)

 
 
 
 
 
 
Deinococcales
 
"Marinithermaceae"
 

Marinithermus

 
 

Oceanithermus

 
 
Thermaceae
 
 

"Allomeiothermus"

 
 
 

Calidithermus

 
 

Meiothermus

 
 
 
 

Thermus

 
 
 
 
 

Trueperaceae

 
 

Deinococcaceae

 
 
 

See also

References
  1. Fred A. Rainey; Milton S. da Costa (14 September 2015). Thermales ord. nov. Bergey's Manual of Systematics of Archaea and Bacteria. p. 1. doi:10.1002/9781118960608.obm00045. ISBN 9781118960608.
  2. John W. Tunnell, Jr.; Darryl L. Felder; Sylvia A. Earle; David K. Camp, eds. (2009). Gulf of Mexico Origin, Waters, and Biota: Biodiversity. Texas A&M University Press. p. 38. ISBN 9781603442695. Retrieved 18 December 2016.
  3. Ho, Jonathan; Adeolu, Mobolaji; Khadka, Bijendra; Gupta, Radhey S. (October 2016). "Identification of distinctive molecular traits that are characteristic of the phylum "Deinococcus-Thermus" and distinguish its main constituent groups". Systematic and Applied Microbiology. 39 (7): 453–463. doi:10.1016/j.syapm.2016.07.003. ISSN 0723-2020. PMID 27506333.
  4. Khadka, Bijendra; Persaud, Dhillon; Gupta, Radhey S. (2019-12-29). "Novel Sequence Feature of SecA Translocase Protein Unique to the Thermophilic Bacteria: Bioinformatics Analyses to Investigate Their Potential Roles". Microorganisms. 8 (1): 59. doi:10.3390/microorganisms8010059. ISSN 2076-2607. PMC 7023208. PMID 31905784.
  5. "The LTP_01_2022". The All-Species Living Tree Project. Retrieved 20 June 2022.
  6. "LTP_all tree in newick format". The All-Species Living Tree Project. Retrieved 20 June 2022.
  7. "LTP_01_2022 Release Notes" (PDF). The All-Species Living Tree Project. Retrieved 20 June 2022.
  8. "GTDB release 07-RS207". Genome Taxonomy Database. Retrieved 20 June 2022.
  9. "bac120_r207.sp_labels". Genome Taxonomy Database. Retrieved 20 June 2022.
  10. "Taxon History". Genome Taxonomy Database. Retrieved 20 June 2022.


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