DESCRIPTION OF SPECIES OF STREPTOMYCES 203 



Zahner, II. Belv. Chim. Ada 10: L99 204, Remarks: Closely related to S. griseoflavus 



1957). and S.flaveolus. 



Morphology: Sporophores produce verti- , v <■, , > ,■ tcs~\. ■ 



1 °- , , , . n!v vtreptomyces elasticus (Sohngen and 



cils on sterile aerial hvphae, wit h open, ir- .• i i Q1/ i\ u i ,^.i KT . . 



. • . bol, 101 I i Waksnian (Sohngen, N. L. and 



regular spirals. Spores elliptical to oval; sur- .- . ( < < ,. , u , , • , ,, , A1 



. . ' , . , .. rol, J. G. Centr. Bakteriol. Parasitenk. Abt. 



lace oi spores covered with long, thin spines jj to. 07 no pui, 



(I>1 - I(M - . Morphology: Mycelium typical, branched. 

 (dvcer(»l niirate agar: (jrrowth greenis 



yellow to citron-yellow to lighl green. Aerial 



Short, motile rods observed in young cul- 

 tures. Spores white, round, diameter aboul 



mycelium white, changing to yellow, to ash- ■ 1 1 . ,1 . ,• .1 



6 & J . 1 /x, double that oi the mycelium, 



gray. Soluble pigmenl greenish-yellow to \ r / ■ ,. ' n • ■ , • 



& • ps & • Agar media: Growth yellowish- white. 



g s-green. Aerial mycelium snow-white. 



Glycerol malate agar: Growth pale yellow, Gelatin: Growth yellow-brown, 



turning greenish-yellow. Aenal mycelium Carbon utilization: Glucose, glycerol, ethyl 



white to pale yellow. No soluble pigment. al( , ()M< mannitolj organic acidSj ( . ;l|( 



Glucose-asparagine agar: Growth golden sa lts readily assimilated. 



yellow to greenish-yeUow to greenish-gray. Stl(T()S(i inversitfn: Positive 



Aenal mycelium ash-ray to reddish-violet. Urea; p roduces urease 



No soluble pigment. Paraffin: Utilized. 



Nutrient agar: Growth lighl yellow. No Rubber; niliz(i( , 1 . ( , :((Hlv 



rial mycelium. No soluble pigment. Temperature: Optimum 28°C, maximun 



•nun 



33 C destroyed at 65°C in 5 minutes. 



Glucose-peptone agar: Growth yellow 



Aerial mycelium white in center, brownish Habitat- S '1 



on periphery, changing to ash-gray. Soluble 



pigmenl golden yellow. (1!) - Streptomyces endus Gottlieb and Car- 

 Starch agar: Growth yellow. Aerial myce- ,(>r - l956 (Gottlieb, D. and Carter. II. E. 



limn ash-gray. No hydrolysis, or at most, l ■ s - Paten1 2 > 74,i < 902 > Ma y --• L9 56). 



t races Morphology: Sporophores formed along 



Gelatin: Substrate growth dark brown. entire len S th of mycelium, at righl angles 



Aerial mycelium greenish-gray. Soluble pig- 1() iL ( ' P ac1 s P irals Produced, often with 



mem dark brown. No liquefaction after 31 1() loo P s - V,m,,ti llv P ll; '<' () < to 1.0 M in 



days. Melanin-positive. diameter; old hyphae 1.25 to 1.50 and even 



Potato: Growth greenish to raven-black. -•'' m- 



Aerial mycelium limited, white-gray to Sucrose nitrate agar: Substrate growth 



bluish-gray. Soluble pigmenl brownish to has color of medium, later turning dark, 



pitch-black. Aerial mycelium white, changing to lighl 



Milk: Good coagulation and peptoniza- gray, then to dark gray. No soluble pigment, 



tion. Gelatin: Slow and only slighl liquefaction. 



Tyrosinase reaction: Positive. No soluble pigment. Melanin-negative. 



Carbon utilization: Xylose, lactose, rafli- Starch: I Ivdrolysis rapid. 



nose, acetate, and succinate positive. Su- Potato: Growth good. Aerial mycelium 



crose, inulin, dulcitol, salicin, and sodium light gray. No soluble pigment, 



citrate negative. Milk: Coagulation; no visible peptoniza- 



Temperature: Develops well ai IS 40 C. tion. 



Antagonistic properties: Produce- echino- Carbon utilization: Utilizes starch, man- 



mycin. nose, dextrin, glucose, arabinose, maltose, 



