| Name
|
Examples
|
Source of energy
|
Source of electrons
|
Respiration electron acceptor
|
| Iron bacteria
|
|
Fe2+ (ferrous iron) → Fe3+ (ferric iron)
|
Fe2+
|
O
2 (Oxygen)
|
| Nitrosifying bacteria
|
|
NH3 (ammonia) → NO−
2 (nitrite)
|
NH3
|
O
2 (Oxygen)
|
| Nitrifying bacteria
|
|
NO−
2 (nitrite) → NO−
3 (nitrate)
|
NO−
2
|
O
2 (Oxygen)
|
| Chemotrophic purple sulfur bacteria
|
Halothiobacillaceae
|
S2−
(sulfide) → S0
(sulfur)
|
S2−
|
O
2 (Oxygen)
|
| Sulfur-oxidizing bacteria
|
Chemotrophic Rhodobacteraceae and Thiotrichaceae
|
sulfur (S0
) → sulfate (SO2−
4)
|
sulfur
|
O
2 (Oxygen)
|
| Thiobacillus denitrificans
|
Thiobacillus denitrificans
|
sulfur (S0
) → sulfate (SO2−
4)
|
sulfur
|
Nitrate (NO−
3)
|
| Anammox bacteria
|
Planctomycetes
|
NH3 (ammonia) → N
2 (nitrogen)
|
NH3
|
Nitrite (NO−
2)
|
| Sulfate-reducing bacteria
|
|
H2 (hydrogen) → H2O (water)
|
H2 (hydrogen)
|
Sulfate (SO2−
4)
|
| Phosphite bacteria
|
|
phosphite → phosphate
|
phosphite
|
Sulfate (SO2−
4)
|
| Aerobic hydrogen bacteria
|
Cupriavidus metallidurans
|
H2 (hydrogen) → H2O (water)
|
H2 (hydrogen)
|
O
2 (Oxygen)
|
| Carboxydotrophic bacteria
|
|
carbon monoxide (CO) → carbon dioxide (CO2)
|
carbon monoxide (CO)
|
O
2 (Oxygen)
|
| Methanogens
|
Archaea
|
H2 (hydrogen) → H2O (water)
|
H2 (hydrogen)
|
CO2 (carbon dioxide)
|
