772 



ORDER V. ACTINOMYCETALES 



bacteria and which is identical with acti- 

 thiazic acid or thiozolidone. 



Relationships to other species: Resembles 

 Streptomyces roseochromogenes in the color 

 of the growth and in the slow or no lique- 

 faction of coagulated serum or gelatin. S. 

 roseochromogenes differs from this species 

 in that it forms numerous open spirals and 

 produces nitrite. 



Source: Isolated as strain No. 154 T-3 

 from soil at Kanegasaki, Iwate Prefecture. 



Habitat: Soil. 



42. Streptomyces olivochromogenes 



(Bergey et al., 1925) Waksman and Henrici, 

 1948. {Actinomyces chromogenus 205, Waks- 

 man, Soil Sci., 8, 1919, 106; Actinomyces 

 olivochromogenus (sic) Bergey et al.. Man- 

 ual, 2nd ed., 1925, 368; Streptomyces olivo- 

 chromogenus (sic) Waksman and Henrici, 

 in Manual, 6th ed., 1948, 941.) 



o.li.vo.chro.mo'ge.nes. L. noun oliva an 

 olive; Gr. noun chroma color; Gr. v. suffix 

 -genes producing; M.L. adj. olivochromo- 

 genes producing an olive color. 



Aerial mycelium: Filaments with numer- 

 ous close spirals. Conidia ellipsoidal. 



Gelatin stab: Cream-colored, spreading 

 surface growth. Rapid liquefaction. 



Agar: Wrinkled, brown growth, becom- 

 ing gray-green. 



Synthetic agar: White, spreading growth. 

 Aerial mycelium ash-gray with brownish 

 tinge. 



Starch agar: Transparent, spreading 

 growth. 



Glucose agar: Abundant, natal-brown to 

 almost black growth, entire margin. 



Glucose broth: Thin, brown growth; flaky 

 sediment. 



Litmus milk: Dark brown ring; coagu- 

 lated; peptonized, becoming alkaline. 



Potato: Small, wrinkled, black colonies. 



Soluble brown pigment formed. 



Starch is hydrolyzed. 



Nitrites produced in trace amounts from 

 nitrates. 



Aerobic. 



Optimum temperature, 37° C. 



Antagonistic properties : Positive. 



Source: Isolated from soil. 



Habitat: Soil. 



43. Streptomyces resistomycificus Lin- 



denbein, 1952. {Streptomyces resistomycificus 

 Brockmann and Schmidt-Kastner {nomen 

 nudum), Naturwiss., 38, 1951, 479; Linden- 

 bein, Arch. f. Mikrobiol., 17, 1952, 376.) 



re.sis.to.my.ci'fi.cus. L. v resisto to 

 resist; Gr. mas.n. myces fungus; L. v. facio 

 to make; L. comb. adj .ending -ficxis pro- 

 ducing; M.L. adj. resistomycificus making re- 

 sistant to a fungus; producing resistomycin. 



Aerial mj-celium: Hyphae long with curl- 

 ing tips. Spores short, ellipsoidal. Pigment 

 of mycelium becomes pink to pink-gray. 



Gelatin: Dark brown growth. Aerial 

 mycelium powdery, white-gray. Soluble 

 chestnut-brown pigment. Liquefaction. 



Agar: Crumb-like growth. Aerial myce- 

 lium powdery blue-gray. Soluble dark brown 

 pigment. 



Synthetic agar: Crumb-like, dark brown 

 growth. Aerial mycelium velvety chalk- 

 white, later ash-gray. Soluble red-brown 

 pigment. 



Glucose asparagine agar: Crumb-like 

 growth with light brown reverse. Aerial 

 mycelium velvety ash-gray. Soluble yellow- 

 brown pigment. 



Ca-malate agar: Strong, crumb-like 

 growth with dark brown reverse. Aerial 

 mycelium velvety ash-gray. Soluble ash- 

 gray pigment. 



Starch agar: Lichenoid growth with red- 

 dish brown reverse. Aerial mycelium vel- 

 vety gray-white, later becoming red-gray. 

 Soluble pigment lacking or uniformly red- 

 dish brown. 



Glucose agar: Crumb-like growth with 

 dark brown reverse. Aerial mycelium vel- 

 vety chalk-white. Soluble reddish to dark 

 brown pigment. 



Glucose broth: Floating, large, light yel- 

 low colonies. Aerial mycelium cottony 

 white to red. Soluble light yellow pigment. 



Milk : Lichenoid growth with dark brown 

 reverse. Aerial mycelium velvety chalk- 

 white, later yellowish red. Soluble dark 

 brown pigment. Sometimes weakly pep- 

 tonized. 



Potato: Brownish black growth. Aerial 

 mycelium powdery, reddish white. Soluble 

 dark brown pigment. 



Starch is actively hydrolyzed. 



