DESCRIPTION OF SPIX'II'.S OF STREPTOMYCES 



•_'i:i 



upon various bacteria; some strains show- 

 no activity. 



Habitat : Soil. 



Remarks: .4. melanosporeus (Krainsky, 

 1914) and A. melanogenes (Rubentschik 

 1928) arc related to above species. 



153. Streptomyces melanogenes Sugawara 

 and Onuma, 1957 (Sugawara, R. and 

 Onuma, M. J. Antibiotics (Japan) 10A: 138- 

 1 r_\ L957). 



Morphology: Sporophores monopodially 

 branched; no spirals, sometimes slighl cur- 

 vature. Spores cylindrical, 1.7 to 0.8 by 

 li.'J in 0.5 v. 



Sucrose nitrate agar: Growth moist, fold- 

 ing, colorless to grayish-red-brown; reverse 

 yellow-orange. Aerial mycelium thin, brown- 

 ish-white. Soluble pigment brownish-yellow. 



Glucose-asparagine agar: Growth colorless 

 to cream-colored with dark reddish center; 

 reverse dark yellow-orange. Aerial my- 

 celium pale grayish-white. Soluble pigment 

 yellowish-brown. 



Calcium malate agar: Growth colorless 

 to brownish-yellow to grayish-blue-black. 

 Aerial mycelium yellow-white. Soluble pig- 

 ment greenish-yellow to brown. 



Nutrient agar: Growth cream-colored to 

 brown. No aerial mycelium. Soluble pigment 

 reddish-brown. 



Potato: Growth folded, colorless to yel- 

 lowish-brown. Aerial mycelium brownish 

 or grayish-white. Soluble pigment dark 

 yellowish-brown. 



Gelatin: Growth colorless to dark brown. 

 Aerial mycelium white to gray. Soluble pig- 

 ment pale yellowish-brown. Liquefaction 

 weak. 



Milk: Cream-colored to dark brown ring. 

 Soluble pigment pinkish-brown. 



Blood agar: Growth glistening, yellowish- 

 gray to dark olive-gray. No aerial mycelium. 

 Soluble pigment dark brown. Hemolysis 

 positive. 



Antagonistic properties: Produces a mela- 

 nin-like tumor-inhibiting substance. 



Remarks: Resembles S. phaeochromo- 

 genes, S. griseocarneus, and S. cinnamonen- 



sis. 



L54. Streptomyces michiganensis Corbaz 

 et al., L957 (Corbaz, R., Ettlinger, L., 



Keller-Schierlein, \Y., and Zahner, II. Arch. 

 Mikrobiol. 26: L92 208, L957). 



Morphology: Sporophores straight, ar- 

 ranged in sympodially branched clusters; 

 no spirals. Spores smooth (PL II l). 



Glycerol nitrate agar: Growth whitish- 

 yellow. Aerial mycelium velvety, white to 

 yellowish to greenish-gray. 



Calcium malate agar: Growth thin, golden 

 yellow. Aerial mycelium chalk-white, be- 

 coming light yellow. 



Glucose-asparagine agar: Growth thin, 

 white to yellow, changing to light yellow- 

 red. Aerial mycelium velvety, white-yellow. 



Glucose-peptone agar: Growth wrinkled, 

 at first light brown, then copper-red, finally 

 reddish-brown. Aerial mycelium velvety, 

 greenish-gray. Soluble pigment reddish- 

 brown. 



Gelatin: Pellicle light brown. Aerial my- 

 celium powdery, chalk-white. Liquefaction 

 slow. Soluble pigment brown. 



Starch: No hydrolysis. 



Potato: Growth light yellow. Aerial my- 

 celium velvety, white-gray to white-yellow. 

 Soluble pigment gray-black. 



Milk: Pellicle light brown. Aerial myce- 

 lium sparse. Coagulation and peptonization. 



Tyrosinase reaction: Positive. 



Antagonistic properties: Produces actino- 

 mycin X. 



Carbon utilization: Xylose, arabinose, 

 fructose, galactose, maltose, mannitol, salicin 

 utilized. Rhamnose, sucrose, lactose, ralli- 

 nose, inulin not utilized. 



Habitat: Soil. 



155. Streptomyces micrqflavus (Krainsky, 

 1914) Waksman and Henrici, 1948 (Krain- 

 sky, A. Centr. Bakteriol. Parasitenk. Abt. 

 II., U:086, 1914). 



