INDEX 



455 



Nicotinic acid amide, 196 



Niemann, C, 228, 237, 242 



Niklas, H., 218, 224 



Nitrate utilization, effect of molybdenum 



on, 79 

 Nitrite as source of nitrogen, 102 

 Nitrogen, 97-110 



fixation of, by fungi, 98 

 nitrate, list of fungi utilizing, 99 

 sources of, effect of, on sporulation, 321 



laboratory exercise, 428 

 utilization of, as basis of classification, 

 97 

 effect of organic acids on, 103, 104, 



107 

 organic, 101, 105 

 Noble, R. J., 366, 371 

 Nobles, M. K., 134, 147, 410, 418 

 Nocardia gardneri, 287 

 Nord, F. F., 96, 102, 108, 114, 115, 123, 

 135, 140, 141, 147, 148, 186, 191, 192, 

 207, 270, 295, 300, 303 

 Norman, A. G., 49, 63, 134, 147 

 North, H. E., Ill, 113 

 Novelli, G. D., 199, 205 

 Nutrition, of host, effect of, on disease 

 development, 392-393 

 special conditions of, laboratory exer- 

 cise, 429-430 

 Nutritional requirements, variation of, 



within species, 400-401 

 Nydalis, 385 



O 



Oldium lactis, 271 

 Oligosaccharides, 129-133 

 Ophiobolus graminis, 12, 97, 99, 180, 190, 

 193 

 miyabeanus, 99 

 oryzinus, 193 

 Ophiostoma, 401 



catonianum, 193, 200 

 muUiannulahun , 42, 93 



{See also Ceratostomella multian- 

 nulata) 

 ulmi, 31 



{See also Ceratostomella ulmi) 

 Organic acids, as carbon sources, 126-128 

 as factor in resistance, 390 

 production of, 277-283 



Orton, C. R., 7, 381, 383, 397 

 Osmotic pressure, 36, 37 



in host-parasite relation, 376, 377, 382 

 Oswald, J. W., 311, 335 

 Owen, W. L., 274, 300 

 Owens, H. S., 136, 147 

 Oxidases, 51 

 Oxybiotin, 194 

 Oxygen, 88-92, 359, 360 



Paneolus, 293 

 Pantothenic acid, 198-199 



antagonists of, 233-234 



moieties of, 198 

 Pantoyltaurine formula, 234 

 Panus stijpticus, 402, 403, 410, 438 

 Parasitella simplex, 188 

 Parasitism, 375-386 



action in advance, 376 



by balanced parasites, 375, 380-383 



by destructive parasites, 375-378 



by fungi, of fungi, 385 

 of insects, 383-385 

 of man, 385 



types of, 375 



by wilt-producing fungi, 378-380 

 Parker-Rhodes, A. F., 250, 264 

 Pasteur, L., 6, 7, 39, 44, 45, 63, 117, 147, 

 219, 224, 275, 276, 300 



biographical note, 6 

 Pathogenicity, inheritance of, 411 



variation in, 402 

 Patton, A. R., 16, 22 

 Payne, E. H., 291, 300 

 Pectinase, 47, 50 



production of, 376-378 



specificity of, 377-378 

 Pehrson, S. O., 34, 44, 160, 169, 380, 397 

 Peltier, G. L., 164, 168, 273, 300 

 Penetration, 372-375 



direct, 373-375 



into immune plants, 374, 391 



through stomata, 372-373 



through wounds, 375 

 Penicillin, 288-290 



influence of, on cell morphology, 39 



type formula of, 289 

 Penicillium, 93, 94, 99, 172, 197, 222, 

 260, 271, 272, 274, 275, 283, 286, 

 385, 401, 436 



