Thermococci

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Thermococci
Scientific classification
Domain:
Kingdom:
Phylum:
Class:
Thermococci
Order
Synonyms
  • Protoarchaea
  • Protoarchaea Cavalier-Smith 2002
  • Thermococci Zillig and Reysenbach 2002

In taxonomy, the Thermococci are a class of microbes within 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 is a recently discovered microorganism 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 between 55-95 °C with an optimal temperature of approximately 88 °C. with an optimal pH of 6. It has pronounced radioresistance and can survive gamma radiation at 30 KGY.

References[edit]

  1. ^ See the NCBI webpage on Thermococci. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.

Further reading[edit]

Scientific journals[edit]

Scientific books[edit]

  • Zillig W; Reysenbach AL (2001). "Class IV (sic) [V]. Thermococci class. nov.". In DR Boone; RW Castenholz. Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria (2nd ed.). New York: Springer Verlag. p. 169. ISBN 978-0-387-98771-2.
  • Garrity GM; Holt JG (2001). "Phylum AII. Euryarchaeota phy. nov.". In DR Boone; RW Castenholz. Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria (2nd ed.). New York: Springer Verlag. p. 169. ISBN 978-0-387-98771-2.

Scientific databases[edit]

External links[edit]