102 



THE ACTINOMYCOTIC, Vol. II 



w 4^ 







^4- 



^L 



> 



# 



±c 



Figure 29. Verticil formation (Nitella type) including both primary and second; 

 produced from: Shinobu, R. Mem. Osaka Univ. Lib. Arts and Ed. B. Nat. Sci. 7, 1958) 



u 



*: 





■y verticils (Re 



1. Aerial mycelium on synthetic agar 

 media gray. Tyrosinase-negative. 



Strepto m yces an t ib iotic us 



2. Aerial mycelium on synthetic agar 

 media yellow. Tyrosinase-positive. 



Streptomyces michiganensis 

 II. Numerous spirals produced on aerial my- 

 celium. 



1. Yellow or yellow-green pigment pro 

 duced on synthetic agar. 



Streptomyces galbus 



2. Soluble pigment on synthetic agar, dark 

 brown. 



Streptomyces lanatus 

 B. Nonchromogenic group. 



I. No spirals on aerial mycelium. 



1. Strongly proteolytic. Aerial mycelium 

 on synthetic agar white, yellow, or 

 greenish. 



Streptomyces chrysomallus 



2. Weakly proteolytic. Aerial mycelium on 

 svni hetic agar mouse-gray. 



Streptomyces chrysomallus v. 

 fumigatus 

 II. Numerous spirals on aerial mycelium. 



1. Aerial mycelium on glycerol-glycine 

 agar grayish-rose. Prad ically no growth 

 on synt het LC agar. 



Streptomyces murinus 



2. Abundant growth on synthetic agar. 

 Aerial mycelium on glycerol -glycine 

 agar cream-colored. 



Streptomyces galbus v. achro- 



mogeru s 



10. MAYAMA SYSTEM (1959) 



Mayama (1959) concluded that morphol- 

 ogy, serological reactions, and types of 

 growth on liquid media arc the most impor- 

 tant properties for the classification of 

 Streptomyces. On the basis of these prop- 

 erties, he divided the genus into seven 

 groups: S. olivaceus, S. lavendulae, S. aureo- 

 faciens, S. griseolus, S. albus, S. rimosus, and 

 S. reticuli. In addition to these, he also listed 

 a number of species for which no group char- 

 acteristics were known, notably S. anti- 

 bioticus, S. fulvissimus, S. ruber, S. coelicolor, 

 etc. 



Mayama (1959) and Mayama and Ta- 

 wara (1959) classified the genus Strepto- 

 myces into five sections and 14 series: 

 Section I. Aerial mycelium irregularly 



branched. Sporophores produced at the 



