DESCRIPTION OF SPECIES OF STREPTOMYCES 169 



Cellulose: Some growth. thai it grows abundantly on potato. Gause 



Coagulated serum: Cream-colored growth et al. (1957) described a variety of this 



on surface. Aerial mycelium white. Liquefac- organism under the name .1. albidus var. 



fcion rapid. invertens. Ettlinger et al. (1958) considered 



Production of IPS: Negative. ii as a strain of S. griseus. 



Antagonistic properties: Produces strep- ,. .■, , ,, ■ ,■ r \- i 



. . 9. otreptomyces albvreticuh Nakazawa, 



"" 1,nr1 "- , . l'.i.V. (Nakazawa, K. J. Agr. Chem. Soc. 



Habitat: Soil. Japan 29: 644-647; 647-649, 1955). 



Remarks: According to Flaig and Kutz- A , , , ,, , • , ., 



^ B Morphology: Produces spirals m the 



aer (1960), this culture obtained from CBS , .. ., t ., . , .. 



secondary verticils ot the aerial mycelium. 



■s S. coelicolor Miiller. Etthnger et al. < L958) Th(i sporeg jm , cylindrica] () 6 t() 08 by , 4 



considered that Duchess strain ot this , . ,, 



to I .<S lx. 



organism belongs to S. griseus. Q - 4 t ,. ,, ,, • i 



6 sucrose nitrate agar: Growth ilnu, color- 



8. Streptomyces albidus (I)uche, 1934) less; reverse pale ochraceous salmon. Aerial 



Waksman (Duche", .1. Les actinomyces du mycelium white. 



groupe albus. P. Lechevalier, Paris, L934). Glucose-asparagine agar: Growth colorless; 



Morphology: Sporophores form long, later becoming yellow. Aerial mycelium 



open spirals. Spores spherical to oval. white, cottony, later becoming cream-colored. 



Glucose nitrate agar: Growth colorless; Nutrient agar: Growth thin, mouse-gray. 



some drops of colorless guttation. Aerial No aerial mycelium. Soluble pigmenl och- 



mycelium white. Soluble pigmenl yellowish, raceous tawny. 



Peptone agar: Growth colorless. Aerial Potato plug: Growth gray. Aerial my- 



mycelium white; reverse slightly greenish, celium white. Color of plug brown. 



Soluble pigmenl brownish. Gelatin: Liquefaction slow. Soluble pig- 

 Potato: Growth flat, colorless. Aerial ment black. 



mycelium white. No soluble pigment. Milk: Growth cream-colored. Peptoniza- 



Gelatin: Growth cream-colored. Rapid tion slow. Soluble pigmenl brown after 24 



liquefaction. No soluble pigment. Melanin- days. 



negative. Starch: Actively diastatic. 



Milk: Growth cream-colored. Coagulation Nitrate reduction: Positive. 



weak; peptonization rapid. Odor cheesy. Production of IPS: Positive. 

 Starch: Hydrolysis good. Cellulose: No growth. 

 Cellulose: Growth good. Antagonistic properties: Produces euro- 

 Fats and waxes: Growth good, according cidin, an antifungal antibiotic. 



to Krassilnikov 1 1949). 



Nitrate: Slow reduction to nitrate. 



( )dor: Strong, earthy. 



Antagonistic properties: According t 



Krassilnikov (1949), it possesses strong l: " L34, 1916; 8: 90, 1919). 



antagonistic activities. Morphology: Sporophores straight, branch- 

 Remarks: Closely related to S. albus '"^ wilh V, ''A little tendency to produce 



(Krassilnikov, 1949) ; differs by more delicate spirals. Spores oval-shaped. 



growth, by a reverse that is often yellowish- Sucrose nitrate agar: Growth glossy, 



brown. Also related to S. microflavus, but spreading, colorless, becoming yellowish. 



differs from the form described by Krainsky Aerial mycelium powdery, white, with 



in that its growth is never rose-yellow and yellowish tinge. No soluble pigment. 



10. Streptomyces alboftavus (Waksman and 

 Curtis, L916) Waksman and Ilenrici, 1948 

 (Waksman, S. A. and Curtis, P. E. Soil Sci. 



