Chromatium

Definition

Chromatium is a genus of purple sulfur bacteria known for their phototrophic capabilities and utilization of sulfur compounds during photosynthesis. These bacteria are found in anaerobic, aquatic environments where light is available.

5 Must Know Facts For Your Next Test

1. Chromatium species perform anoxygenic photosynthesis using sulfide as an electron donor.
2. They contain pigments like bacteriochlorophyll and carotenoids which give them their distinct color.
3. These bacteria store sulfur granules intracellularly as a byproduct of their metabolism.
4. Chromatium can be found in environments such as stagnant water, hot springs, and sulfur-rich lakes.
5. They play a role in the sulfur cycle by converting hydrogen sulfide into elemental sulfur.

Related terms

Anoxygenic Photosynthesis: A form of photosynthesis that does not produce oxygen.

Bacteriochlorophyll: A type of chlorophyll used by certain phototrophic bacteria to absorb light energy.

Sulfur Cycle:

The series of processes by which sulfur moves between rocks, waterways, and living systems.