Aquifex
A. aeolicus requires oxygen to survive, but can grow in levels of oxygen as low as 7.5 ppm. A. pyrophilus can even grow anaerobically by reducing nitrogen instead of oxygen.
A. aeolicus genome to other organisms showed that around 16% of its genes originated from the Archaea domain. Members of this genus are thought to be some of the earliest members of the eubacteria domain.
A. aeolicus
The two species generally classified in Aquifex are A. pyrophilus and A. aeolicus. Both are highly thermophilic, growing best in water temperature of 85 °C to 95 °C. They are true bacteria as opposed to the other inhabitants of extreme environments, the Archaea.
Aquifex are thermophilic and often grow near underwater volcanoes or hot springs.A. aeolicus requires oxygen to survive, but can grow in levels of oxygen as low as 7.5 ppm. A. pyrophilus can even grow anaerobically by reducing nitrogen instead of oxygen.
A. aeolicus genome to other organisms showed that around 16% of its genes originated from the Archaea domain. Members of this genus are thought to be some of the earliest members of the eubacteria domain.
A. pyrophilus
Hydrogenobacter
Hydrogenobacter thermophilus (strain TK-6) is an obligately chemolithoautotrophic, extremely (and strictly) thermophilic hydrogen-oxidizing bacterium whose optimal growth temperature is around 70 to 75°C and was isolated from hot springs.
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