FAMILY III. STREPTOMYCETACEAE 



815 



Nitrites produced from nitrates. 

 Grows well at 37° C. 

 Source: Isolated from a mound scab of 

 mangels. 

 Habitat: Mangels, so far as known. 



141. Streptomyces listeri (Erikson, 

 1935) Waksman and Henrici, 1948. (Actino- 

 imjces listen Erikson, Med. Res. Council 

 Spec. Rept. Ser. 203, 1935, 36; Waksman 

 and Henrici, in Manual, 6th ed., 1948, 961.) 



lis'te.ri. M.L. gen. noun listeri of Lister; 

 named for Dr. Joseph Lister, father of anti- 

 septic surgery. 



Vegetative growth: Long slender fila- 

 ments, many loosely wavy, forming a dense 

 spreading mycelium which rapidly grows 

 into a membrane on most media. 



Aerial mycelium: Very slow and incon- 

 stant in appearance, short and straight; 

 conidia ellipsoidal. 



Gelatin: Slight liquefaction; round white 

 surface colonies; after 45 days, confluent 

 skin, almost completely liquefied. 



Agar: Smooth, round, moist, cream- 

 colored, margin depressed, center ele- 

 vated, closely adherent; becoming umbili- 

 cated, wit^i a myceloid margin. 



Glucose agar: Cream-colored, glisten- 

 ing, pinpoint colonies; later aggregated in 

 convoluted skin. 



Glycerol agar: Abundant, moist, cream- 

 colored growth, colonies elevated, piled 

 up; powdery white aerial mycelium. After 

 20 days, skin deeply buckled; colorless with 

 e.xuded drops. 



Ca-agar: Poor growth, a slight biscuit- 

 colored membrane. 



Potato agar: After one week, extensive 

 growth, colorless submerged colonies, 

 warted surface; dirty pink coloration after 

 2 weeks; scant white aerial mycelium after 

 4 months. 



Dorset's egg medium: No growth. 



Blood agar: Small, round, cream-colored 

 colonies, smooth translucent surface; no 

 hemolysis. 



Serum agar: Small, irregular, moist, 

 cream-colored colonies, tending to be 

 heaped up; later somewhat transparent. 



Inspissated serum: Abundant growth, 



colorless shiny colonies, centrally elevated, 

 becoming confluent. 



Broth: Small, round, white colonies in 

 sediment. 



Glucose broth: Small, white, nodular 

 colonies; later abundant flocculi. 



Synthetic sucrose solution: Delicate 

 white colonies in suspension and in sedi- 

 ment. 



Litmus milk: Coagulation. No change in 

 reaction. 



Potato plug: Abundant, dull, brownish, 

 wrinkled skin with white aerial mycelium; 

 large, stellate, fluffy, white colonies in 

 liquid at base. 



Source: Isolated from human material. 

 Strain from Lister Collection. 



Habitat: Unknown. 



142. Streptomyces galtieri Goret and 

 Joubert, 1951. (Ann. Parasitol. Hum. et 

 Comp., 26, 1951, 118.) 



gal.ti.e'ri. M.L. gen. noun galtieri of 

 Galtier; named for Prof. Galtier of the 

 Veterinary School, Lyons, France. 



Vegetative growth: Wavy mycelium 

 branched in a monopodial form, 1 micron 

 in diameter. On agar, two types of colonies 

 are produced: one is small, flat, regular and 

 white; the other large, thick, irregular and 

 yellowish. 



Aerial mycelium: Producing spirals. 

 Conidia ellipsoidal, 0.8 by 0.8 to 1.5 microns. 



Gelatin: Poor, flaky, white growth. 

 Limited liquefaction. 



Agar: Poor, thin, yellowish growth. 

 Aerial mycelium powdery, white. Soluble 

 brown pigment. 



Synthetic agar: Small colonies. Aerial 

 mycelium powdery, white. No soluble pig- 

 ment. 



Peptone agar: Limited, cream-colored 

 growth. Aerial mycelium powdery, white. 

 Reddish brown soluble pigment weakly 

 produced. 



Starch: Thin colonies. Aerial mycelium 

 powdery, white. No soluble pigment. 



Glycerol potato: Reddish orange puncti- 

 form colonies growing together. A thick 

 crust. Limited white aerial mycelium ap- 

 pearing very slowly. No soluble pigment. 



