SPECIES OF STREPTOMYCES 03 



43. Streptomyces diastatochromogenes (Krainsky) Waksman and 

 Henrici. (Krainsky, A., Centrbl. Bakt. II, 41, 1914, 662.) 



Aerial mycelium: Conidia spherical or oval, about 1.2 n. 



Nutrient agar: Colonies medium-sized with white to gray aerial myce- 

 lium. 



Glucose agar: Colonies medium-sized, colorless, with gray aerial myce- 

 lium. 



Potato: Colonies light gray; aerial mycelium gray; medium colored black. 



Gelatin: Colonies light gray. Soluble brown pigment formed. Liquefaction. 



Starch: Same as on glucose agar. Weakly diastatic. 



Cellulose: No growth. 



Glucose broth: Flaky colonies in depth at first, later also over surface. 



Calcium malate agar : Colonies medium-sized, colorless, with gray aerial 

 mycelium. 



Temperature: Optimum 35°C. 



Antagonistic properties: Very strong. 



Remarks: Tyrosinase formed. 



44. Streptomyces flavochromogenes (Krainsky) Waksman and Hen- 

 rici. (Krainsky, A., Centrbl. Bakt. II, 41, 1914, 662.) 



Aerial mycelium: Conidia oval, 1.7 m- 



Nutrient agar: Aerial mycelium formed late, at first white, later gray. 

 Gray soluble pigment formed. 



Glucose agar: Brown soluble pigment formed. 



Potato: Colonies yellow; white aerial mycelium. 



Gelatin: Colonies yellowish. Liquefaction slight. 



Starch: Colonies yellow; aerial mycelium white. Weakly diastatic. 



Cellulose: Growth slow. 



Glucose broth: Fine flakes, with small spherical colonies adherent to 

 glass. Medium colored brown. 



Nitrate : Reduction to nitrite. 



Esculin: Acted upon. 



Calcium malate agar: Colonies yellow with white aerial mycelium form- 

 ing late. 



Temperature: Optimum 35°C. 



Remarks: Tyrosinase formed. 



45. Streptomyces bikiniensis Johnstone and Waksman. (Johnstone, 

 D. B., and Waksman, S. A., J. Bacteriol., 55, 1948, 317-326.) 



Aerial mycelium: Hyphae straight, branched heterogeneously. No spirals. 

 Conidia oval. 

 Synthetic agar: Growth white, becoming pallid neutral gray, with white 



