Pyrodictium

Definition

Pyrodictium is a genus of hyperthermophilic archaea that thrive in extremely high-temperature environments, such as hydrothermal vents. These microorganisms are known for their unique cell structure and remarkable heat resistance.

5 Must Know Facts For Your Next Test

1. Pyrodictium species can survive temperatures up to 121°C (250°F).
2. They utilize sulfur as an energy source, reducing it to hydrogen sulfide.
3. Pyrodictium cells have unique network-forming cannulae which interconnect individual cells.
4. They belong to the domain Archaea, specifically the phylum Crenarchaeota.
5. The optimal growth temperature range for Pyrodictium is between 80°C and 105°C.

Review Questions

• What is the maximum temperature at which Pyrodictium can survive?
• What energy source does Pyrodictium primarily use?
• Describe the unique cell structure feature of Pyrodictium.

Related terms

Hyperthermophile: Microorganisms that thrive at extremely high temperatures, typically above 80°C.

Archaea: A domain of single-celled microorganisms distinct from bacteria and eukaryotes, often found in extreme environments.

Crenarchaeota: A phylum within the domain Archaea, consisting mainly of thermophilic and hyperthermophilic organisms.