596 



SUBJECT INDEX 



Porphyrins, 446, 457, 478 



monolayers, 394 

 Potassium, deficiency effects, 336-337, 

 339, 428 



in chloroplasts, 376-377 

 Primary photochemical process, in carbon- 

 ate solutions, 81 



in Chi solutions, 483-484 



common to all Chl-sensitized reactions 

 in vivo, 543-544 



in dyestuff solutions, 77 



in ionic solutions, 75 



in Hg-H20 mixture, 72 



in PO, 527-528, 543-544 



in PR, 168-170 



in water, 71 



in ZnO-HaO mixture, 73 

 Primary photochemical process in photo- 

 synthesis, 136, 142, 150-171, 451 



decomposition of H2O, 155 



dehydrogenation of an organic hydroxy 

 compound, 290 



electron transfer from Chi to H2O, 552 



H exchange between intermediates, 

 159-160 



H — OH exchange, 151 



most likely, 166-168 



oxidation of Chi, 552-553, 554-557 

 of water, 155-157 

 of H2O and reduction of CO2, 161-163 



phosphorylation, 150 



reduction of CO2, 157-159 



two such processes, 160-164 

 Products of photosynthesis, 38-46 

 Propionate, as plant food, 261 

 Propionic acid bacteria, fixation of CO2, 209 

 Protective colloids, effect on Chi, 502 

 Protein-chlorophyll, suspensions, solutions, 



and precipitates, 384-387, 388, 394, 502. 



See also Chloroplastin, Chloroglobin 

 Proteins, association with pigments, 382- 

 384, 388, 417, 475, 479, 502 



in chloroplasts and cytoplasm, 371-376 



in grana and stroma, 361 



protection by Chi, 383 



protection of Chi, 502-503 



sensitivity to dinitrophenol, 319 

 Protochlorophyll, 404-405, 431, 445, 457, 



463 

 Protoplasma, role in PS, 333, 342, 344, 355 

 Purple sulfur bacteria, 4, 99, 101-103, 124 



analysis, 109, 110 



dark metabolism, 110-111 



pigments, 402, 416^17, 473 



PR, 102-112 



R, 100, 110, 564 

 Purpurea leaves, 401, 480 

 Pyrenoids, 43, 356, 359 

 Pyrrole, 440 



effect on Chi synthesis, 428^29 

 Pyruvic acid, as plant food, 266 



decarboxylation, 185 



energy, 184, 218 



role in R, 223, 224 



sensitized PO, 508-511 



Quantum yield, of Chi bleaching, 485^88, 

 496^97 



of Chl-sensitized reactions, 509, 512- 

 514, 518-520, 546-547 



of PR in algae, 169, 314-315 



of PS, 154, 160, 228-229 



of water oxidation by eerie ions, 74 

 Quenching of Chi fluorescence, 167, 483, 



490 

 Quercetin, 185, 480 

 Quinine, effect on PS, 321 



as sensitizer, 78 

 Quinones, 221-222 



peroxides, 292-293 



reaction with Chi, 461 



Radicals. See Free radicals 



Radioactive rays, effect on PS, 337, 346-347 



Radiocarbon, exchange with Chi, 557 



as indicator, in bacterial metabolism, 

 122, 207 

 in decarboxylation, 185-186, 201 

 in PS, 37, 202-203, 241-244 

 Radiohydrogen. See Tritium 

 Radiomagnesium, exchange with Chi, 555 

 Radiooxygen, as indicator in PS, 54-55 

 Red algae, absence of Chi b, 405 



habitat, 420 



pigments, 402, 410, 413, 417^19 

 Respiration, correction 32, 561 



cycles, 222-224, 268 



effect of hght, 527, 566-570 



function of O2 pressure, 530 



