DESCRIPTION OF SPECIES OF STREPTOMYCES 



199 



simili 



CI IIS. 



der ill 



1 . albovina- 



60. Stn ptomya s coroniformis I Millard and 

 Burr, L926) Waksman (Millard, \Y. A. and 

 Hun-, S. Ann. Appl. Biol. L3:580, L926). 



Morphology: Sporophores straight, some 

 long and some short. Spores oval, 0.8 by 



().(') /x- 



Sucrose nitrate agar: Growth in form of 

 discrete colonics partially coalescing, gray to 

 greenish. Aerial mycelium white, covering 

 edges of growth. 



Nutrient potato agar: Growth wrinkled, 

 grayish. No aerial mycelium. 



Potato: Growth raised, grayish. Aerial 

 mycelium white. Plug pigmented brownish 

 around and under growth. 



Gelatin: Growth fair. Liquefaction slow if 

 any. 



Milk: A few colonies on surface. No coagu- 

 1 : 1 1 ion; peptonization limited. 



Starch: No hydrolysis or trace. 



Nitrate: Limited reduction to nitrite. 



Tyrosinase read ion: Negative. 



Temperature: Growth fair at 37.5°C. 



Habitat: Potato scab. 



61. Streptomyces craterifer (.Millard and 

 Burr, 1926) Waksman (Millard, W. A. and 

 Burr, S. Ann. Appl. Biol. 13: 580, L926). 



Morphology: Straight sporophores form 

 terminal branches, dichotoniously forked. 

 Spores rectangular, L.3 to 0.9 by 1 .0 to 0.8 /x. 



Sucrose nitrate agar: Growth lichenoid, 

 abundant, colorless; aerial mycelium mouse- 

 gray. Numerous guttation drops, which 

 leave blackish craters on surface of growth. 



Nutrient agar: Growth colorless; aerial 

 mycelium scant, white. No soluble pigment. 



Starch agar: Growth spreading, thin, col- 

 orless; no aerial mycelium. Starch hydro- 

 lyzed. 



Potato: Growth cream-colored; aerial my- 

 celium white to mouse-gray. Color of plug 

 unchanged. 



Gelatin: Surface growth wrinkled; aerial 



■lion. No 

 lored. No 



at 



mycelium white. Rapid liquei 

 soluble pigmenl . 



Milk: Surface growth cream- 

 coagulation, rapid peptonization. 



Tyrosinase reaction: Negative. 



Nitrate reduction : Positive. 



Temperature: Only slighl growtl 



37.5°C. 



Habitat : Raised, smooth scab. 

 Type culture: [MRU 3373. 



62. Streptomyces cyaneus (Krassilnikov, 

 1941) Waksman (Krassilnikov, N. A. Actin- 

 omycetales. Ezvest. Akad. Nauk.SSSP, Mos- 

 kau, p. 14, 1941). 



Morphology: Sporophores produce open 

 spirals (sinistrorse) , with 2 to 3 turns in 

 each. Spores oval, seldom spherical, ().('» to 



0.8 by O.C) n. 



Agar media: Growth pigmented blue at 

 both acid and alkaline reactions. The pig- 

 ment does not dissolve into medium. Aerial 

 mycelium well developed, downy, bluish- 

 gray to blue-green in color. 



Sucrose nitrate agar: Colonic- at first 

 smooth, becoming lumpy, leathery, com- 

 pact, and covered with well developed blue- 

 gray aerial mycelium. 



Gelatin: Strong liquefaction. Melanin- 

 positive. 



Milk: Peptonization without prior coagu- 

 lation. 



Starch: Hydrolysis weak. 



( 'ellulose: No growth. 



Nitrate reduction : Negative. 



Sucrose inversion: Negative. 



Antagonistic properties: Weak. 



Type culture: [MRU 3761. 



63. Streptomyces cyanoflavus Funaki and 

 Tsuchiya, 1958 (Funaki, M., Tsuchiya, P., 

 Maeda, K., and Kainiya, T. .1. Antibiotics 

 (Japan) LI A: 143 I 19, 1958). 



Morphology: Sporophores straight, form- 

 ing many branches, but no spirals. 



Sucrose nitrate agar: Growth colorless to 

 pale yellowish-brown. Aerial mycelium white 

 to light greenish-gray. No soluble pigment. 



