Medium Characteristics Growth Vegetative mycelia Aerial mycelia Spore mass Soluble pigment Nutrient agar Good Moderate, pale yellow Moderate, white Poor, white Nil Yeast – malt extract agar (ISP-2) Abundant Moderate, yellow Abundant, white Moderate, white Faint yellow Oatmeal agar (ISP-3) Abundant Good, pale-yellow Abundant, white Moderate, white Nil norganic salts starch agar (ISP-4) Good Moderate, yellow Good, white Poor, white Nil Glycerol asparagines agar (ISP-5) Good Moderate, yellow Good, white Moderate, white Nil Tyrosine agar (ISP-7) Moderate Moderate, pale-yellow Good, white Poor, white Nil Yeast – starch aga Moderate to good Good, pale yellow Good, white Moderate, white Nil Sucrose – nitrate agar Moderate Moderate, pale yellow Moderate, white Poor, white Nil

Table 1: Cultural characteristics of the isolated Streptomyces sp. KS1908.