SERIES AND SPECIES OF GENUS STREPTOMYCES 



117 



( 'haracU ristic Propi rtit s 



This is due either to their longer historical I. Series llbus 

 background or to their capacity to form 

 important economic products, especially an- 

 tibiotics. •■'■ Sporophores produce spirals; spores 



In characterizing each series, the follow- spherical to oval, 

 ing properties have been given special con- b. Color of aerial mycelium white, 

 sideration. ''• Melanin-negative. 



a. Morphological properties, notably d - N " soluble pigmenl produced (excepl 

 structure of sporophores and spores. a t ' ;,i "' brown pigmenl on certain media). 



b. Color of aerial mycelium on synthetic e " Weakly proteolytic and weakly antago- 

 ,■ nistic. 



The Minis -eric- comprises a large num- 

 ber of organisms, characterized by the pro- 

 duction of a typical leathery and compact 



substrate growth, colorless on various 

 e. Other characteristic properties, such ,• , • , ,• . • 



media. Aerial mycelium is snow-wnite to 



,n white in color, assuming various shades as 



c. Formation of soluble brown pigme 

 i melanin i on protein media. 



d. Spore surface. 



as color of substrate growth, for 



soluble, nonmelanoid pigments, rate of , h(l ( . u , tm . (1 grows ()1(1(M . Th( , spor0 p hores 



proteolysis, or production of specific anti- are [ ong and , nnn spirals; the spores are 



biotics. spherical to ovoid. The various strain- grow 



A summary of the properties of the 1.1 we l] ()U both organic and synthetic media. 



series within the genus Streptomyces is given They vary greatly in their proteolytic and 



n Table 10. diastatic properties. As a rule, this group of 



Table 10 

 Charactt ristic properties of various series of Streptomyces 



No. of 

 series 



\anu- "f merit's 



Minis 



Flavus 

 Uubi 

 Viridis 

 Violact mnl, i r 



F i ml in, 

 (his, us 



Hygroscopicus 

 Scabu s 

 Lin , ndulcu 

 Erythrochromo 



Ijl III s 



V 1 1 idoch riinm 



I /, II , s 

 < 'ill 11,1111,1111, us 



Reticuli 



White 



White to gray 



Mouse gray 



Rose 



Gray to green 



Gray 



Pink i" rose 



< trass green 



gray 



Whit 

 ( }ray 

 Lavender 

 Yellowish 



Green t< 



green 

 Pinkish 

 White to graj 



dive 



( lolor of growth 



yel- 



nge 

 dive 



( Iolorless 

 Colorless I 



Low 

 Yellow 

 Red 

 ( rreen 



Red to blue 

 Yellow to o 

 Colorless to 



buff 

 I )ark gray to black 

 Brow n to black 

 ( Iolorless 

 Orange 



Brownish to green 



yellowish 

 ( Iolorless 



