Endospore

Definition

An endospore is a tough, dormant, and non-reproductive structure produced by certain bacteria to ensure survival in harsh conditions. It is highly resistant to extreme temperatures, desiccation, chemicals, and radiation.

5 Must Know Facts For Your Next Test

1. Endospores are primarily formed by the genera Bacillus and Clostridium.
2. The process of endospore formation is called sporulation.
3. Endospores can remain viable for long periods, even thousands of years.
4. They are highly resistant to common disinfection methods and require specific treatments like autoclaving for effective destruction.
5. Endospores have a thick protective coat that contributes to their resistance.

Review Questions

• Which bacterial genera are known for producing endospores?
• What is the term for the process by which an endospore forms?
• Why are endospores particularly challenging in the context of microbial control?

Related terms

Autoclaving: A sterilization method using high-pressure saturated steam at high temperatures.

Sporulation: The process of spore formation.

Desiccation: The removal or reduction of moisture from an organism or environment.