SUBJECT INDEX 



593 



of Chi with oxidants or reductants, 



503-505, 515-516, 517-518 

 internal in Chi, 450-459 

 Oxidation-reduction potential, 53, 217-222 

 of ascorbic acid, 272 

 of carbonic acid, 75 

 of eerie ions, 74 

 of Chi, 295, 556-557 

 of dyes, 76 



of excited molecules, 152 

 of formic acid, 79 

 of free radicals, 230-233 

 of H2O2, 79, 283 

 of intermediates in PS, 234 

 of iron complexes, 240 

 in leaves, 431 

 of O2, 79, 283 

 of phosphate esters, 225 

 of thionine, 152 

 of water, 79 

 "OxycMorophyll," 295, 464^67, 556 

 Oxygen, acceptor complex, 325 

 conversion of PS to PO, 531-532 

 cycle on earth, 10 



deficiency, influence on PS, 326-328 

 efifect on CS, 139 



on Chi bleaching, 486-491, 498, 501 



on Chi fluorescence, 492, 547 



on greening, 429 



on nitrate reduction, 539 

 inhibition of PS by excess, 329, 530 

 isotopic composition and PS, 10, 54-56 

 metastable, 150, 514-515 

 origin in PS, 64 

 origin in sulfate produced by bacteria, 



113 

 as oxidant in PS, 536, 538 

 -oxygen bond weakness, 49, 214-215 

 photochemical production by algae with 



substitute oxidants, 541-543 

 potential, 283 

 Oxygen-liberating enzymes in photosyn- 

 thesis. See Deoxidase, Catalyst Ec, 

 Catalyst Eo 

 Oxygen liberation, absence in bacteria, 100 

 in artificial PS, 92, 93 

 in deacidification of succulents, 265 

 of distilled water, 200 

 by first light flash, 133, 327 

 by leaf powders and single chloroplasts, 



62-67 



by nitrate reducing plants, 539 



as nonhmiting reaction in PS, 285-286 



in PS, 173, 281-299 



role of carotenoids, 474-475 

 Oxygen pressure effect, on Chi bleaching, 

 499 



on Chl-sensitized oxidation, 513 



on PO, 502-503, 523, 526-527, 530-536 



on PS, 328-330, 530-531 



on R, 527, 530-531 

 Oxygen uptake, by adapted algae, 139 



by bacteria, 110, 114 



by Chi, 293, 455, 460-461, 492, 498^99, 

 520 



by Chl-sensitized PO, 508-511 



by grana, 503 

 Oxyhydrogen reaction, in algae, 129, 132, 

 134, 138-142 



in bacteria, 116, 118 



Chl-sensitized, 512 



effect of HCN, 310 



H2O2 as intermediate, 286 



Palisade tissue, 357 

 Pentose and pentosans, 38, 43, 49 

 Peracids, energy, 291 

 Percarbonic acid, 79 



in PS, 288-289 

 Performaldehyde and performic acid in PS, 



287-288 

 Peroxidase, 281, 380, 431 

 Peroxides. See also Amine peroxides, 

 Catalyst peroxides. Hydrogen peroxide, 

 Organic peroxides, Percarbonic add, 

 Performaldehyde 

 decomposition as nonphotochemical re- 

 action in PS, 172 

 formation in Chi bleaching, 495 



in dead tissues, 63 

 as intermediates in oxyhydrogen reac- 

 tion, 140 

 in PO, 293, 499, 508, 511 

 in PS, 48, 156 

 monomolecular and mono-acid bimo- 



lecular decomposition, 80 

 reversible formation, 291-293 

 pH effect, on anaerobic inhibition, 327 

 on Chi monolayers, 449, 450 

 on CO2 solubility, 173-179 

 on fermentation, 137 



