Streptomyces

Definition

Streptomyces is a genus of Gram-positive bacteria known for its complex life cycle and production of medically important antibiotics. It is characterized by its filamentous structure and soil-dwelling nature.

5 Must Know Facts For Your Next Test

1. Streptomyces is responsible for producing over two-thirds of the clinically useful antibiotics of natural origin, including streptomycin and tetracycline.
2. These bacteria have a high GC content in their DNA, which contributes to their ability to produce secondary metabolites.
3. Streptomyces species undergo a distinct life cycle that includes spore formation, germination, vegetative growth, and sporulation.
4. They are commonly found in soil and decaying vegetation where they play a crucial role in organic matter decomposition and nutrient cycling.
5. Genetic engineering techniques have been employed to enhance antibiotic production in Streptomyces, making it a key organism in pharmaceutical biotechnology.

Review Questions

Related terms

Antibiotic: A substance produced by or derived from microorganisms that inhibits or kills other microorganisms.

Gram-Positive Bacteria: Bacteria that retain the crystal violet stain used in the Gram staining method, characterized by thick cell walls made of peptidoglycan.

Genetic Engineering:

The deliberate modification of an organism's characteristics through manipulation of its genetic material.