520 



SUBJECT INDEX 



Pinselic acid, 168 



Pipecolic acid, 262 



Plant pathogenic fungi, 19, 21, 115, 347, 



366, 377-378 

 Plasmoptysis, 405 

 Polyenes, 164 

 Polyenynes, 164 

 Polyfructoses of mycelium, 43 

 Polygalactoses of mycelium, 43 

 Polyglucoses of mycelium, 43 

 cz's- Polyisoprene, 164 

 Polymyxin, 453 

 Polyphenol oxidases, 84, 173, 174-176, 



178, 263, 480 

 Polyphosphates, 302, 479 

 Polyporenic acids, 158 

 Polysaccharides, 42-43, 120-121, 368-369 

 Polyuronide of mycelium, 43 

 Porphyrins, 479 

 Potassium, 303-304, 316, 371, 468 



bioassay for, 314 



of cells, 37, 38 



permeability to, 468 

 Powdery mildew fungi, spore germina- 

 tion in, 396, 398, 399, 401, 405-406, 

 408, 412 

 Prephenic acid, 271-272 

 Preservation of cultures, 4-5 

 Pressure, 423, 433 

 Progesterone, 157 

 Proline, 257, 260, 265, 268 

 /3-Propiolactone, 454 

 Propionic acid, 68-73, 81, 462 

 Propylene oxide, 377-378 

 Proteases, 251-253 

 Protein, of cells, 37, 41, 44-45, 393 



requirement for, 345 



utilization of, 250-252 

 Proteinases, see Endopeptidases 

 Protocatechuic acid, 171-172, 174 

 Protopectinase, 115-116 

 Pteroylglutamic acid, 341-343 

 Pthiocol, 344 

 Puberulonic acid, 169 

 Pulcherrimin, 283, 308 

 Purines, 275-278, 462 

 Putrescine, 273 

 Pyrazine derivatives, 283 

 Pyrazoles, 464 

 3-Pyridinethiol, 472 



Pyridoxal, 335 



Pyridoxal phosphate, 267, 271, 335 



Pyridoxamine, 335 



Pyridoxine, 326, 328, 329, 335, 345 



Pyrimidine moiety of thiamine, 330-332 



Pyrimidines, 275-277 



Pyrithiamine, 332 



Pyrone derivatives, 172, 178-180 



Pyrophosphate, 38, 302 



A'-Pyrroline-5-carboxylic acid, 268 



Pyruvic acid, 329, 397 



carboxylation of, 142, 228, 333 



from serine, 143, 262 



role of, in respiration, 138, 213-216, 

 218, 222-228 

 in valine synthesis, 270 

 Pyruvic carboxylase, 213, 216, 309 

 Pyruvic oxime, 249 



Qio, of growth, 15 



of respiration, 208 



of thermal death, 425 

 Quinic acid, 171, 172 

 Quinoline derivatives, 283 

 Quinolinic acid, 338-339 

 Quinone reductase, 177 

 Quinones, in respiration, 177-178 



toxicity of, 449, 463, 475-478 



Raffinose, 67-73, 107, 109 

 Ravenelin, 168 

 Resistance, 378 

 Respiration, aerobic, 202 



anaerobic, 202 



endogenous, 210-211, 463 



inhibition of, 442^143, 484 



of spores, 393-395 



terminal, 229-232 

 Respirometry, 203 

 Resting cells, 101 

 Resting spores, 396-398 

 Rhamnose, 63, 68-73 

 Rhizopterin, 342-343 

 Rhodoviolascin, 158, 159 

 Riboflavin, 307, 326, 328, 336-337, 345, 



372, 402 

 Riboflavin monophosphate, 275 

 Ribonucleic acid, 45, 275 



