788 



ORDER V. ACTINOMYCETALES 



Aerial mycelium: Hj^phae long, sporulat- 

 ing, producing no spirals, Spores ellipsoidal 

 or spherical. 



Gelatin: Heavy, light to dark yellow sur- 

 face growth. Aerial mycelium powdery, 

 white. Soluble yellow-brown to deep brown 

 pigment in liquefied portion. Strong lique- 

 faction. 



Agar: Poor, shiny, golden yellow growth. 

 Aerial mycelium thin, powdery. Soluble 

 golden yellow pigment. 



Synthetic agar: Crumb-like, light yellow 

 growth. Aerial mycelium powdery, white. 

 Soluble golden yellow pigment. 



Glucose asparagine agar: Smooth, almost 

 colorless to j^ellowish growth. Aerial my- 

 celium powdery, white. Soluble faint yellow 

 pigment. 



Ca-malate agar: Thin, smooth, colorless 

 to faintly yellowish growth. Aerial my- 

 celium powdery, grayish white. 



Starch agar: Thin, colorless growth. 

 Aerial mycelium powdery, white. No soluble 

 pigment. 



Glucose agar: Yellowish growth with tinge 

 of orange. Aerial mycelium powdery, gray- 

 ish white. Soluble light yellow to golden 

 yellow pigment. 



Glucose broth: Heavy yellowish surface 

 growth; submerged flakes yellowish. Soluble 

 golden yellow pigment. 



Milk: Abundant, colorless growth with 

 light yellow reverse. Aerial mycelium 

 cottony, snow-white becoming yellowish. 

 Actively peptonized. Slight acidity. 



Potato: Heavy, yellow growth becoming 

 brownish yellow or orange. Aerial mycelium 

 cottony white to yellowish white. 



Starch is actively hydrolyzed. 



Poor growth on cellulose. 



Antagonistic properties: Produces actino- 

 mycin C (actinochrj^sin). 



Source: Isolated from soil. 



Habitat: Soil. 



79. Streptomyces gougerotii (Duche, 

 1934) Waksman and Henrici, 1948. {Actino- 

 myces gougeroti (sic) Duche, Encyclopedie 

 Mycologique, Paris, 6, 1934, 272; Strep- 

 tomyces gougeroti (sic) Waksman and Hen- 

 rici, in Manual, 6th ed., 1948, 947.) 



gou.ge.ro'ti.i. M.L. gen. noun gougerotii 

 of Gougerot; named for Prof. Gougerot, 



from whom the original culture was ob- 

 tained. 



Aerial mycelium: Hyphae short, gnarled. 

 Spores ellipsoidal. 



Gelatin: Heavy surface growth. Cream- 

 colored colonies developing slowly with 

 faint aerial mycelium; no pigment; lique- 

 faction rapid. 



Agar: Cream-colored growth forming 

 concentric rings with age, with brownish 

 reverse; faint yellow soluble pigment. Aerial 

 mycelium thin, white. 



Synthetic agar: Slow growth as puncti- 

 form colonies; cream-colored with smooth 

 edge; no aerial mycelium; no soluble pig- 

 ment. 



Glucose agar: Colorless to yellowish 

 growth. Aerial mycelium thin, white. No 

 soluble pigment. 



Peptone broth: Cream-colored ring on 

 surface of medium with flakes throughout 

 the medium; no soluble pigment. Aerial 

 mycelium white. 



Synthetic solution: Submerged mycelium 

 in the form of flakes, later forming a surface 

 pellicle; no soluble pigment. 



Tyrosine medium: Good growth with 

 white aerial mycelium; no soluble pigment. 



Coagulated serum: Cream-colored growth 

 covered with white aerial mycelium; rapid 

 liquefaction of serum. 



Milk: Cream-colored surface growth. 

 Aerial mycelium white, thin. Rapidly pep- 

 tonized. 



Potato: Slow growth of a greenish tinge; 

 Aerial mycelium thin, white. No soluble 

 pigment. 



Starch is rapidly hydrolyzed. 



Nitrates not reduced. 



Antagonistic properties: Active against 

 fungi. 



Relationships to other species: Inter- 

 mediate between Streptomyces albus with its 

 abundant aerial mycelium and Actinomyces 

 almquistii with its very scant aerial my- 

 celium. 



Source: Culture obtained from the col- 

 lection of Prof. Gougerot. 



Habitat: Unknown. 



80. Streptomyces farinosus (Krassilni- 

 kov, 1941) Waksman, 1953. {Actinomyces 

 farinosus Krassilnikov, Guide to the Ac- 



