Thermococci: Difference between revisions
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They live in extremely hot environments, such as [[hydrothermal vent]]s, and they have optimal growth temperatures above 80 °C. ''[[Thermococcus]]'' and ''[[Pyrococcus]]'' (literally "balls of fire") are both obligately [[anaerobic organism|anaerobic]] [[heterotrophs|chemoorganotrophs]]. |
They live in extremely hot environments, such as [[hydrothermal vent]]s, and they have optimal growth temperatures above 80 °C. ''[[Thermococcus]]'' and ''[[Pyrococcus]]'' (literally "balls of fire") are both obligately [[anaerobic organism|anaerobic]] [[heterotrophs|chemoorganotrophs]]. |
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''Thermococcus'' prefers 70–95 °C and ''Pyrococcus'' 70-100 °C. ''[[Palaeococcus helgesonii]]'', recently discovered in the [[Tyrrhenian Sea]], is an [[aerobic organism|aerobic]] [[chemoheterotrophs|chemoheterotrophic]] that grows at temperatures of 45–85 °C with an optimal temperature of 80 °C. |
''Thermococcus'' prefers 70–95 °C and ''Pyrococcus'' 70-100 °C. ''[[Palaeococcus helgesonii]]'', recently discovered in the [[Tyrrhenian Sea]], is an [[aerobic organism|aerobic]] [[chemoheterotrophs|chemoheterotrophic]] that grows at temperatures of 45–85 °C with an optimal temperature of 80 °C. |
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''[[Thermococcus gammatolerans]]'' sp. nov. was recently discovered in the [[Guaymas Basin]], and it grows at temperatures from 55–95 °C with an optimal temperaturearound 88 °C with an optimal pH of 6. It has pronounced [[radioresistance]] and can survive [[gamma radiation]] at 30 kGy.<ref>{{cite news |title=Airspade |url=https://arboraeration.com/airspade/ |access-date=13 June 2023}}</ref> |
''[[Thermococcus gammatolerans]]'' sp. nov. was recently discovered in the [[Guaymas Basin]], and it grows at temperatures from 55–95 °C with an optimal temperaturearound 88 °C with an optimal pH of 6. It has pronounced [[radioresistance]] and can survive [[gamma radiation]] at 30 kGy.<ref>{{cite news |title=Airspade |url=https://arboraeration.com/airspade/ |access-date=13 June 2023}}</ref> |
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==References== |
==References== |
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{{Reflist |
{{Reflist}} |
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==Further reading== |
==Further reading== |
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* {{cite journal | last = Cavalier-Smith | first = T | date = 2002 | title = The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification | journal = |
* {{cite journal | last = Cavalier-Smith | first = T | date = 2002 | title = The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification | journal = Int. J. Syst. Evol. Microbiol. | volume = 52 | pages = 7–76 | pmid = 11837318 | issue = Pt 1 | doi=10.1099/00207713-52-1-7| doi-access = free }} |
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*{{cite journal|last1=Marguet|first1=Evelyne|last2=Gaudin|first2=Marie|last3=Gauliard|first3=Emilie|last4=Fourquaux|first4=Isabelle|last5=le Blond du Plouy|first5=Stephane|last6=Matsui|first6=Ikuo|last7=Forterre|first7=Patrick|title=Membrane vesicles, nanopods and/or nanotubes produced by hyperthermophilic archaea of the genus Thermococcus|journal=Biochemical Society Transactions|date=2013|volume=41|issue=1|pages=436–442|doi=10.1042/BST20120293|pmid=23356325}} |
*{{cite journal|last1=Marguet|first1=Evelyne|last2=Gaudin|first2=Marie|last3=Gauliard|first3=Emilie|last4=Fourquaux|first4=Isabelle|last5=le Blond du Plouy|first5=Stephane|last6=Matsui|first6=Ikuo|last7=Forterre|first7=Patrick|title=Membrane vesicles, nanopods and/or nanotubes produced by hyperthermophilic archaea of the genus Thermococcus|journal=Biochemical Society Transactions|date=2013|volume=41|issue=1|pages=436–442|doi=10.1042/BST20120293|pmid=23356325}} |
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* {{cite journal | last = Woese | first = CR |author2=Kandler O |author3=Wheelis ML |
* {{cite journal | last = Woese | first = CR |author2=Kandler O |author3=Wheelis ML | date = 1990 | title = Towards a natural system of organisms: proposal for the domains Archaea, Bacteria, and Eucarya | journal = Proc. Natl. Acad. Sci. USA | volume = 87 | pages = 4576–4579 | pmid = 2112744 | doi = 10.1073/pnas.87.12.4576 | issue = 12 | pmc = 54159 | bibcode=1990PNAS...87.4576W| doi-access = free }} |
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* {{cite book | author = Zillig W | author2 = Reysenbach AL | date = 2001 | chapter = Class IV (sic) [V]. Thermococci class. nov. | title = Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria | edition = 2nd | editor = DR Boone | editor2 = RW Castenholz | pages = [https://archive.org/details/bergeysmanualofs00boon/page/169 169] | publisher = Springer Verlag | location = New York | isbn = 978-0-387-98771-2 | url = https://archive.org/details/bergeysmanualofs00boon/page/169 }} |
* {{cite book | author = Zillig W | author2 = Reysenbach AL | date = 2001 | chapter = Class IV (sic) [V]. Thermococci class. nov. | title = Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria | edition = 2nd | editor = DR Boone | editor2 = RW Castenholz | pages = [https://archive.org/details/bergeysmanualofs00boon/page/169 169] | publisher = Springer Verlag | location = New York | isbn = 978-0-387-98771-2 | url = https://archive.org/details/bergeysmanualofs00boon/page/169 }} |
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* {{cite book | author = Garrity GM | author2 = Holt JG | date = 2001 | chapter = Phylum AII. Euryarchaeota phy. nov. | title = Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria | edition = 2nd | editor = DR Boone | editor2 = RW Castenholz | pages = [https://archive.org/details/bergeysmanualofs00boon/page/169 169] | publisher = Springer Verlag | location = New York | isbn = 978-0-387-98771-2 | chapter-url = https://archive.org/details/bergeysmanualofs00boon/page/169 }} |
* {{cite book | author = Garrity GM | author2 = Holt JG | date = 2001 | chapter = Phylum AII. Euryarchaeota phy. nov. | title = Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria | edition = 2nd | editor = DR Boone | editor2 = RW Castenholz | pages = [https://archive.org/details/bergeysmanualofs00boon/page/169 169] | publisher = Springer Verlag | location = New York | isbn = 978-0-387-98771-2 | chapter-url = https://archive.org/details/bergeysmanualofs00boon/page/169 }} |
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{{Taxonomic references|taxon=Thermococci}} |
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==External links== |
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{{Archaea classification}} |
{{Archaea classification}} |
Revision as of 16:17, 13 February 2024
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Thermococci | |
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Thermococcus gammatolerans | |
Scientific classification | |
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Class: | Thermococci Zillig and Reysenbach 2002
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In taxonomy, the Thermococci are a class of microbes within the Euryarchaeota.[1]
They live in extremely hot environments, such as hydrothermal vents, and they have optimal growth temperatures above 80 °C. Thermococcus and Pyrococcus (literally "balls of fire") are both obligately anaerobic chemoorganotrophs.
Thermococcus prefers 70–95 °C and Pyrococcus 70-100 °C. Palaeococcus helgesonii, recently discovered in the Tyrrhenian Sea, is an aerobic chemoheterotrophic that grows at temperatures of 45–85 °C with an optimal temperature of 80 °C. Thermococcus gammatolerans sp. nov. was recently discovered in the Guaymas Basin, and it grows at temperatures from 55–95 °C with an optimal temperaturearound 88 °C with an optimal pH of 6. It has pronounced radioresistance and can survive gamma radiation at 30 kGy.[2]
Thermococcus grows on organic substrates where there is a higher capacity of elemental sulfur. This archaeon mostly grows between temperatures 60–100 degrees Celsius. The average temperature where they thrive is around 85 degrees Celcius.
The DNA structure has a cicular genome with around 2,353 coding sequence, and 2,306 are identified.
See also
References
- ^ See the NCBI webpage on Thermococci. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
- ^ "Airspade". Retrieved 13 June 2023.
Further reading
- Cavalier-Smith, T (2002). "The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification". Int. J. Syst. Evol. Microbiol. 52 (Pt 1): 7–76. doi:10.1099/00207713-52-1-7. PMID 11837318.
- Marguet, Evelyne; Gaudin, Marie; Gauliard, Emilie; Fourquaux, Isabelle; le Blond du Plouy, Stephane; Matsui, Ikuo; Forterre, Patrick (2013). "Membrane vesicles, nanopods and/or nanotubes produced by hyperthermophilic archaea of the genus Thermococcus". Biochemical Society Transactions. 41 (1): 436–442. doi:10.1042/BST20120293. PMID 23356325.
- Woese, CR; Kandler O; Wheelis ML (1990). "Towards a natural system of organisms: proposal for the domains Archaea, Bacteria, and Eucarya". Proc. Natl. Acad. Sci. USA. 87 (12): 4576–4579. Bibcode:1990PNAS...87.4576W. doi:10.1073/pnas.87.12.4576. PMC 54159. PMID 2112744.
- Zillig W; Reysenbach AL (2001). "Class IV (sic) [V]. Thermococci class. nov.". In DR Boone; RW Castenholz (eds.). Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria (2nd ed.). New York: Springer Verlag. pp. 169. ISBN 978-0-387-98771-2.
- Garrity GM; Holt JG (2001). "Phylum AII. Euryarchaeota phy. nov.". In DR Boone; RW Castenholz (eds.). Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria (2nd ed.). New York: Springer Verlag. pp. 169. ISBN 978-0-387-98771-2.