DESCRIPTION OF SPECIES OF STREPTOMYCES 213 



I )<><•> not utilize aesculin, adonitol, cellulose, Habitat: Very common in soil, 



citrate, dulcitol, glycerol, ^'-inositol, inulin, Remarks: The characteristic golden pig- 



D-lactose, D-levulose, D-mannitol, D-man- menl is formed in nearly all media, bul 



nose, melezitose, melibiose, D-ramnose, l- becomes most typical and attains its greatesl 



rhamnose, salicin, D-sorbitol, succinate, or brightness in synthetic agar media. It has 



sucrose. indicator properties, turning red in strongly 



Antagonistic properties: Produces a sub- acid solutions. The species is easily recog- 



stance, azaserine, thai possesses certain uized on agar plates by its bronze-colored 



anticancer properties. colonies, surrounded by halo- of brighl yel- 



Source: Argentine soil. low pigment. 



Remarks: Closely resembles S. fradiae. This species was believed to be identical 



A detailed comparison between tins and with the culture described by Millard and 



closely related organisms has been made by Burr (1926) as .1. flavus. The last name is 



Anderson < / til. (1956). invalid, however, since the culture could be 



Type culture: [MRU : > >7:;'_\ NRRL 2424. readily distinguished from the S. flavus of 



90. Streptomyces fulvissimus (Jensen, Krainsky (1914, emend. Waksman and 



L930) Waksman and Henrici, 1948 (Jensen, Curtis > l916 ) Waksman and Henrici. 



II. L. Soil Sci. 30: 66, L930). T - V l ),> culture: [MRU 3665. 



Morphology: Sporophores short, straight, 91. Streptomyces fumosus (Krassilnikov, 



often trifurcated. Slightly wavy, hut no true 1941) Waksman (Krassilnikov, N . A. Actino- 



spirals. Spore- oblong, smooth, 1.0 to 1.2 mycetales. Izvest. Akad. Nauk. SSSR, 



by 1.2 to l.:> n (PI. I d). Moskau, p. 58, 1941). 



Sucrose nitrate agar: ( rrowth lighl golden, Morphology: Sporophores straighl . Spores 



later deep orange to red-brown. Aerial myce- cylindrical, later round, 1..") to 2.0 by 0.7 m- 



lium scant, white, later grayish-brown. Sucrose nitrate agar : Growth dark brown, 



Soluble pigmenl brighl golden to orange. pigment insoluble. Aerial mycelium well 



Glycerol-asparagine agar: Growth golden developed, cottony, dust-colored, occa- 



to dark brown. Aerial mycelium white to sionallv gray-white. 



lighl cinnamon-brown. Soluble pigment Nutrient agar : Growth dark brown. Aerial 



golden to orange. mycelium white. Soluble pigmenl brown. 



Nutrient agar: Growth wrinkled, deep Potato: Aerial mycelium absenl <>r only 



red-brown. No aerial mycelium. Soluble pig- taint, dark gray. Melanin-negative, 



menl brownish-yellow. Melanin-negative. Gelatin: Liquefaction medium. 



Potato: Growth wrinkled, rust-brown. Milk: No coagulation; slow liquefaction. 



Aerial mycelium absent or white. Soluble Soluble pigment dark brown to almost black. 



pigment gray to faint lemon-yellow. Starch: Good hydrolysis. 



Gelatin: Growth yellowish-brown to red- Cellulose: No growth. 



brown. No aerial mycelium. No soluble pig- Sucrose: Inversion weak. 



ment. Rapid liquefaction. Antagonistic properties: None 



Starch-casein agar: Growth yellowish- TI , .. . Q ., 



i v • , i- i i , Habitat : Soil. 

 brown. Aerial mycelium hydrolyzed, smooth, 



lead-gray. Soluble pigment dull yellow to '•'-■ Streptomyces fungicidicus Okaxnietal, 



orange starch. 1954 (Okami, Y., Qtahara, R., Nakamura, 



Production of H 2 S: Positive. S., and Qmezawa, II. J. Antibiotic.- (Japan) 



Antagonistic properties: Produces valino- 7A: 100 101, 1954). 



myein. Morphology: Aerial myceUum produces 



