General Info:

Not motil

Streptomycin, grisein and canicidin is derived from Streptomyces griseus

soil bacterium

•  They form a threadlike net called a mycelium that bears chains of spores at maturity. Their branching strands are 0.5 to 1.0 micrometre in diameter.
• Some are noted for the production of broad-spectrum antibiotics, chemicals that the bacteria naturally produce to kill or inhibit the growth of other microorganisms.

Classification:

• genus of filamentous bacteria of the family Streptomycetaceas that includes more than 5oo spiecies occurring in soil and water
• Aerobic

Gram Stain:

Gram positive

Structure:

Branching strands

Areal mass color is yellow

Straight spore chains with a smooth surface are developed

Habitat:

lives in the soil(makes soil smell earthy)

Nutritional Requirements:

oxygen

Reproduction:

History:

Discovered by Selman A. Waksman in 1948

Beneficial Properties:

Streptomycin- first drug used to treat Teberculosis.

Because it was effective against a wide variety of diseases, streptomycin was used often, with the result that many initially sensitive microorganisms, including the bacterium that causes tuberculosis, became resistant to the antibiotic. It is used in combination with penicillin for treating infections of heart valves (endocarditis) and with tetracyclines in the treatment of plague, tularemia, and brucellosis.

Effect on the Environment:

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