Thermotoga

Definition

Thermotoga is a genus of hyperthermophilic bacteria characterized by their unique outer membrane structure, resembling a toga. These bacteria thrive in extremely high-temperature environments, such as hydrothermal vents.

5 Must Know Facts For Your Next Test

1. Thermotoga species are gram-negative and rod-shaped.
2. They have an optimal growth temperature of around 80°C to 90°C.
3. Their unique outer sheath or 'toga' extends beyond the cell body at both ends.
4. Thermotoga maritima was one of the first species discovered and is often studied for its extremophilic properties.
5. These bacteria can utilize a wide range of carbohydrates for energy, including complex polysaccharides.

Review Questions

Related terms

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

Gram-Negative Bacteria: Bacteria that do not retain the crystal violet stain used in the Gram staining method, characterized by a thinner peptidoglycan layer.

Hydrothermal Vent: A fissure on the seafloor from which geothermally heated water issues, providing an extreme environment where Thermotoga can live.