190 



THE ACTTXOMYCKTES, Vol. II 



hose, melezitose, dulcitol, rhamnose, sorbi- 

 tol, melibiose, phenol, raffinose, and lactose. 



Antagonistic properties: Produces anti- 

 fungal antibiotic ascosin. 



Source: Contaminated fungus plate. 



Remarks: This species is now included 

 with S. coelicolor (Kutzner and Waksman, 

 1959). 



Type culture: IMRTJ 3782; NRRL 2419. 



43. Streptomyces canus Heinemann et al., 

 1953 (Heinemann, B., Kaplan, M. A., Muir, 

 R. D., and Hooper, I. R. Antibiotics & 

 Chemotherapy 3: 1239-1242, 1953). 



Morphology: Aerial mycelium forms nu- 

 merous loosely wound spirals. Spores spher- 

 oidal, 1.0 to 1.2 by 1.6 to 1.8 m- 



Sucrose nitrate agar: Growth moderate, 

 wrinkled, yellow-brown. Aerial mycelium 

 scant. No soluble pigment. 



Glycerol-asparagine agar: Growth abun- 

 dant, cream-colored, turning russet-brown 

 with aging. Aerial mycelium abundant, 

 slate-gray. Soluble pigment amber. 



Calcium malate agar: Growth moderate, 

 golden colored. Aerial mycelium scant. No 

 soluble pigment. 



Nutrient agar: Growth abundant, yellow. 

 Aerial mycelium white to light yellow. Solu- 

 ble pigment faint yellow. 



Potato: Growth abundant, cream-colored. 

 No aerial mycelium. Slight reddish-brown 

 darkening of the potato. Melanin-negative. 



Gelatin: Moderate liquefaction at 26°C 

 in 14 days. No soluble pigment. 



Milk: Alkaline with no coagulation; slight 

 peptonization in 14 days. 



Starch: Hydrolysis in 96 hours at 30°C. 



Nitrate reduction: Positive in 96 hours 

 at 30°C. 



Carbon utilization: Good growth with 

 arabinose, rhamnose, xylose, dextrose, galac- 

 tose, fructose, cellobiose, lactose, maltose, 

 sucrose, dextrin, innlin, raffinose, soluble 

 starch, glycerol, inositol, mannitol, and 

 sodium salicylate. No growth observed with 

 dulcitol, sorbitol, sodium acetate, sodium 



citrate, sodium formate, sodium malate, 

 sodium oxalate, sodium tartrate, or sodium 

 succinate. 



Antagonistic properties: Produces the 

 antibiotic amphomycin, active against gram- 

 positive bacteria. 



Habitat: Soil. 



Type culture: ATCC 12,237. 



44. Streptomyces carnosus (Millard and 

 Burr, 1926) Waksman and Henrici (Millard, 

 W. A. and Burr, S. Ann. Appl. Biol. 13: 

 580, 1926). 



Morphology: Spores cylindrical, 1.0 by 

 0.75 fj,. 



Sucrose nitrate agar: Growth pale smoky- 

 gray to olive-gray. Aerial mycelium abun- 

 dant, gray. Colorless guttation drops appear 

 over the whole surface. Soluble pigment 

 ivory-yellow to cartridge-buff. 



Potato: Growth lichenoid. Aerial my- 

 celium gray to brownish with white spots. 

 Plug becomes colored gray to black. 



Gelatin: Surface growth. Aerial mycelium 

 white in center, gray at margin. Rapid lique- 

 faction. Soluble brown pigment. 



Milk: Surface growth good. No aerial my- 

 celium. Positive coagulation and peptoniza- 

 tion. 



Starch: Hydrolysis. 



Tyrosinase reaction: Negative. 



Nitrate reduction: Positive. 



Habitat: Potato scab. 



45. Streptomyces catenulae Davisson and 

 Finlay, 1959 (Davisson, J. W. and Finlay, 

 A. C. U. S. Pat. 2,895,876, July 21, 1959). 



Morphology: Growth wrinkled with 

 smooth edge. Sporophores in form of short 

 clusters; a few tight spirals. Spores oval to 

 cylindrical, 1.0 by 1.3 m- 



Agar media: Growth dark brown to dark 

 greenish-brown. Aerial mycelium dark olive- 

 gray to brown. 



Sucrose nitrate agar: Growth transparent, 

 white. Aerial mycelium light gray. No solu- 

 ble pigment. 



