Table 2: Photosynthetic Bacteria
|
| Species |
Location |
Morphology |
- Temperature
- (optimum, °C)
|
- pH Range
- (Optimum)
|
Metabolism |
Electron Donor |
Electron Acceptor |
Comments |
Ref. |
| Thermochromatium tepidum |
Sulfide-containing hot springs, worldwide |
Straight to slightly curved rods |
- nd
- (48-50)
|
- nd
- (7.0)
|
PA |
S(2-), S(0) |
CO2 |
Bacteriochlorophyll a; carotenoids; S(0) deposited outside cell |
- Madigan et al. (1986)
- Imhoff et al. (1998)
|
| Chlorobium tepidum |
Acidic high sulfide spring, Rotorua, New Zealand |
Slighty curved rods; 1.3-2.6 micrometers long; sometimes in chains; nonmotile |
- 32-52
- (47-48)
|
- nd
- (6.8-7)
|
PA |
S(2-),S2O3(2-) |
CO2 |
Bacteriochlorophyll c and a |
Wahlund et al. (1991) |
| Heliothrix oregonensis |
Hot springs, Warm Springs Indian Reservation, Oregon |
Filaments; gliding motility; refractile inclusions |
- nd
- (45-55)
|
- nd
- (nd)
|
PO |
Acetate |
CO2 |
Bacteriochlorophyll a; carotenoids; aerotolerant |
Pierson et al. (1985) |
| Chloroflexus aurantiacus |
Hot spring; Sokokura, Japan |
Filaments; 0.6-0.7 micrometers wide; 30-300 micrometers long; gliding motility |
- 35-65
- (52-60)
|
- 7-nd
- (7.6-8.4)
|
PO |
S(2-); yeast extract; acetate |
CO2 |
Bacteriochlorophyll a and c; carotenoids |
Pierson and Castenholz (1974) |
