Actinomycetes
Definition
Actinomycetes are a group of Gram-positive bacteria known for their filamentous growth and soil-dwelling nature. They are notable for producing numerous antibiotics.
5 Must Know Facts For Your Next Test
- Actinomycetes are responsible for the production of over two-thirds of naturally derived antibiotics, including streptomycin and tetracycline.
- They exhibit filamentous growth similar to fungi, which makes them unique among bacteria.
- These microorganisms play a critical role in decomposing organic matter in soil, contributing to nutrient cycling.
- Streptomyces is the most well-known genus within Actinomycetes, widely studied for its antibiotic-producing capabilities.
- Actinomycetes can also produce secondary metabolites that have antifungal, antiviral, and anticancer properties.
Review Questions
- What percentage of naturally derived antibiotics are produced by Actinomycetes?
- Describe the growth pattern of Actinomycetes and how it compares to other bacteria.
- Name one important genus within Actinomycetes and mention its significance.
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Related terms
Antibiotics: Compounds produced by microorganisms that inhibit the growth of or kill other microorganisms.
Filamentous Growth: A type of growth where cells form long thread-like structures called filaments.
Streptomyces: A genus of Actinomycetes known for its prolific production of antibiotics.
