DESCRIPTION OF SPECIES OF STREPTOM1 CES 



279 



Nitrate reduction: Positive. 



Production of H 2 S: Negative. 



[nvertase: None reported. 



Remarks: Ettlinger et al. (1958) considered 

 certain strains of this organism as belonging 

 to 1 lie S. griseus series. 



231. Streptomyces tanashiensis Hata et <rf., 

 1952 (Hata, T., Ohki, X., and Higuchi, T. 

 J. Antibiotics (Japan) 5: 529 534, 19.32). 



Morphology: Sporophores almost straight. 

 Spores spherical to oval, 1.0 by 1.2 /x- 



Sucrose nitrate agar: Growth grayish- 

 yellow. Aerial mycelium white-gray, turning 

 brownish-gray. Soluble pigment light yellow. 



Potato: Growth brown. Aerial mycelium 

 dark gray to whitish-gray. Soluble pigment 

 dark brown. 



Gelatin: Soluble pigment brown. Rapid 

 liquefaction. 



Milk: Yellowish surface ring. Coagulation 

 and peptonization. 



Starch: Hydrolysis. Most suitable for anti- 

 biotic production. 



Nitrate reduction: Negative. 



Tyrosinase reaction: Positive. 



Production of H 2 S: Positive. 



Optimum pH: 5.8 to 6.5. 



Antagonistic properties: Produces luteo- 

 mycin. 



Habitat: Soil. 



Remarks: Resembles S. aureus and *S. 

 antibioticus. 



232. Streptomyces tendae Ettlinger et ui, 

 1958 (Ettlinger, L., Corbaz, R., and H utter, 

 R. Arch. Mikrobiol. 31: 351, 1958). 



Morphology: Sporophores form verticils; 

 chains of spores as open, regular spirals. 

 Spores smooth (PI. I c). 



Glycerol nitrate agar: Growth thin, light 

 yellow. No aerial mycelium. No soluble pig- 

 ment . 



Glucose-asparagine agar: Growth light 

 yellow to light carmine. Aerial mycelium 

 cottony, cinnamon-brown. 



Calcium malate agar: Growth light yellow 



to brownish-yellow. Soluble pigment brown- 

 ish-yellow. 



Gelatin: Growth Ligh.1 yellow. Aerial my- 

 celium sparse. Liquefaction limited. Soluble 

 pigment dark brown. 



Starch agar: Growth thin, light yellow. 

 Limited hydrolysis of starch. 



Potato: Growth brown to dark. Aerial 

 mycelium powdery, chalk-white. 



Milk: Growth brownish-yellow. Aerial my- 

 celium sparse. Xo coagulation: weak pep- 

 tonization. 



Antagonistic properties: Produces anti- 

 biotic carbomycin. 



Habitat: Soils in France. 



Remarks: Organism said to be melanin- 

 negative, although dark brown pigment re- 

 ported on gelatin. 



233. Streptomyces tenuis (Millard and 

 Burr, 1926) Waksman (Millard, W. A. and 

 Burr, S. Ann. Appl. Biol. 13: 580, 1926). 



Morphology: Sporophores straight. Spores 

 cylindrical, 0.9 by 0.8/x- 



Sucrose nitrate agar: Growth thin, Hat, 

 yellowish-drab. Aerial mycelium dee]) olive- 

 buff. Soluble pigment pale orange-yellow. 



Glucose agar: Growth thin, flat. Aerial 

 mycelium olive-buff. Soluble pigment green. 



Potato: Growth good. Aerial mycelium 

 deep olive-buff. Soluble pigment gray to 

 olive to black. 



Nutrient potato agar: Growth wrinkled, 

 grayish. Aerial mycelium white to vinaeeous- 

 fawn. Soluble pigment golden brown. 



Gelatin: Growth pale gray. Aerial myce- 

 lium scant, white. Rapid liquefaction. Solu- 

 ble pigment yellow. 



Milk: Growth good. Aerial mycelium 

 white. Coagulation; incomplete peptoniza- 

 tion. 



Starch: Hydrolysis. 



Nitrate reduction: Negative. 



Tyrosinase reaction: Negative. 



Habitat: Potato scab. 



234. Streptomyces thioluteus Okami, L952 



