122 



PHYSIOLOGY OF THE FUNGI 



(1932). This paper should he consulted for the experimental details 

 and references to the literature. One hundred twenty-three carbon 

 compounds were investigated, and of the hexoses, mannose supported 



Table 22. Milligrams of Mycelium Produced by 21 Fungi Grown on Media 



Containing Different Sugars 

 AL the sugars were used at a rate which supphed 8 g. of carbon per liter. Each 

 125-ral. flask contained 20 ml. of medium. Cultures were incubated at 25°C. Each 

 weight in the table is the average of 12 cultures. (Margolin, thesis, West Virginia 

 University, 1942.) 



Fungus 



Blakeslea trispora 



Diplodia macrospora 



D. natalensis 



Fusarium lycopersici 



Helicostylum pyriforme 



Helmintiwsporum sativum. . . 



Mucor ramannianus 



Pilaira moreaui 



Phycomyces blakesleeanus . . . 



Phytophthora cactorum 



P. erythroseptica 



P.fagopyri 



Pythiomorpha gonapodyoides 



Pythium ascophaUon 



Rhizopus nigricans 



R. suinus 



Rosellinia arcuata 



Sordaria fimicola 



Syncephalastrum racemosum. 



Thielavia basicola 



Typhula variabilis 



Days of 

 incu- 

 bation 



6 



15 



8 



6 



5 



8 



8 



7 



7 



14 



12 



6 



6 



6 



4 



6 



6 



6 



5 



10 



12 



Mg. mycelium 



D- 



Glu- 

 cose 



91 



83 



199 



108 



126 



75 



89 



40 



138 



119 



79 



89 



152 



85 



121 



130 



73 



121 



131 



60 



181 



D- 



Fruc- 

 tose 



94 



55 

 154 

 101 



81 

 128 

 118 



32 

 130 



40 



20 



51 

 122 



56 

 114 

 128 



58 

 162 

 141 



54 

 122 



D- 



Man- 

 nose 



98 



71 



89 



100 



126 



83 



115 



45 



139 



16 



81 



19 



79 



84 



117 



136 



49 



147 



126 



55 



113 



D- 



Ga- 

 lac- 

 tose 



123 

 55 

 50 



126 

 99 

 46 



116 

 44 

 74 

 11 

 17 

 11 

 14 

 10 



121 



135 

 33 

 28 



140 

 78 

 23 



Mal- 

 tose 



113 



94 



190 



119 



102 



96 



128 



44 



101 



157 



114 



20 



76 



111 



121 



30 



63 



127 



132 



57 



202 



Suc- 

 rose 



10 

 58 



199 

 74 

 11 



100 

 12 

 11 



111 

 77 

 93 



130 



142 



116 

 7 

 12 

 38 

 16 

 15 

 61 



126 



Lac- 

 tose 



7 



21 



17 



18 



40 



40 



124 



44 



6 



4 



10 



13 



12 



27 



5 



8 



34 



52 



13 



6 



15 



the most growth. Quantitative data on the utilization of L-sorbose by 

 fungi is less abundant than for the other hexoses. Observations in this 

 laboratoiy indicate that many fungi either do not utilize sorbose or do so 

 slowly. 



Pentoses. The pentoses shown below occur naturally, mostly in the 

 form of polysaccharides or other complex compounds. L-arabinose and 

 D-xylose are the most easily available and have been more extensively used 

 than the other pentoses. The formulas for the naturally occurring 

 pentoses are given below: 



