Desulfovibrio

Definition

Desulfovibrio is a genus of Gram-negative, sulfate-reducing bacteria commonly found in anaerobic environments. These bacteria play a significant role in the sulfur cycle by reducing sulfate to hydrogen sulfide.

5 Must Know Facts For Your Next Test

1. Desulfovibrio species are obligate anaerobes, meaning they thrive in environments devoid of oxygen.
2. They are Gram-negative and have a curved rod shape.
3. Desulfovibrio can use various electron donors such as lactate, ethanol, and hydrogen for sulfate reduction.
4. These bacteria produce hydrogen sulfide (H2S) as an end product of sulfate reduction, which can be toxic and corrosive.
5. Desulfovibrio species are often studied for their potential application in bioremediation of heavy metals.

Review Questions

• What type of environment do Desulfovibrio species thrive in?
• What is the main metabolic activity of Desulfovibrio?
• Why are Desulfovibrio species important in the sulfur cycle?

Related terms

Proteobacteria: A major phylum of Gram-negative bacteria known for their diversity and importance in various ecosystems.

Sulfate-reducing bacteria: A group of microorganisms that reduce sulfate to hydrogen sulfide during their metabolism.

Bioremediation: The use of microorganisms to remove or neutralize contaminants from a polluted area.