CONTENTS 



1. NUTRITION OF FUNGI 1 



Mineral nutrition of fungi, 2. Organic nutrients of fungi, 

 16. Growth factors, 24. Influence of osmotic pressure, 

 29. Implications, 29. 



2. ENZYMES AND ENZYM1C ACTIVITIES OF FUNGI . . 37 



3. RESPIRATION 53 



Historical material, 53. Types of respiration, 56. The 

 respiratory ratio, 62. Respiratory systems, 63. Respiro- 

 metry, 64. Inhibition of respiration, 65. Stimulation of 

 respiration, 66. Implications, 66. 



4. BIOCHEMISTRY OF FUNGI 69 



Organic acids and other products having six or fewer 

 carbon atoms, 70. Polysaccharides, 79. Fats, 79. Sterols 

 and vitamins, 81. Amino acids, 83. Pigments of fungi, 



83. Other metabolic products, 86. Implications, 88. 



5. EFFECTS OF TEMPERATURE ON FUNGI 96 



Cardinal temperatures, 97. Resistance to low temperatures 

 and high temperatures, 103. Influence of temperature on 

 infection, 109. Temperature and reproduction, 111. 



Temperature and zonation, 114. Temperature coeffi- 

 cients, 114. Temperature and oxygen tension, 117. Im- 

 plications, 119. 



6. EFFECTS OF RADIATION ON FUNGI 123 



Morphogenic reactions, 125. Phototropism, 129. Lumines- 

 cence, 137. Inhibitory effects, 138. Stimulatory effects, 

 143. Effect on sporulation, 144. Effect of X-rays, 145. 

 Induction of saltations, 145. Mode of action of short 

 radiations, 147. Implications, 147. 



7. EFFECTS OF REACTION OF SUBSTRATE ON FUNGI . 151 



