598 



SUBJECT INDEX 



Succinate, biosynthesis, 209 



content in plants, 250, 251, 263 



energy, 218 



as food, 261, 263 



intermediate in PS, 51 

 in R, 224, 268 



oxidation coupled with phosphorylation, 

 226 



PO, 267 

 Succulents, acid metabolism, 264-267 



PS quotient, 34 

 Sucrose, 41-42 



energy, 49 



first product of PS, 37, 44-46 



influence on PS, 334-335, 341 



uptake of CO2, 180 

 Sulfate, assay in leaves, 377 



production by bacteria, 102, 113, 115 

 Sulfite, effect on PS, 317 



in PR, 103 

 Sulfur, in CS, 113-115 



in chloroplast proteins, 374 



in PR, 102 

 Sulfur bacteria, colorless, 100, 101, 112, 

 113-116 



green and purple, 99, 101, 102-106 

 Sulfur dioxide, effect on plants, 317, 318, 

 378 

 on PS, 318, 342 

 Sunlight, intensity distribution, 427 

 Sun plants. See Heliophilic plants 

 Sunstroke of shade plants, 533, 536 



Tartrates, 250, 251 



as food, 261, 266 



as intermediates, 51 

 Temperature effect, in CO2 inhibition of PS, 

 331 



in CS, 117 



in H adaptation, 130 



in Hill's reaction, 66 



m PS, 172, 296 

 Tetrahydroporphins, 445 

 Tetrathionate, as product of PR and CS, 



104, 115 

 Thiocyanide, effect on plants, 318 



as reductant in CS, 116 

 Thionine, potential, 77 



reaction with ascorbic acid, 272 



reduction by Fe++ in light, 77, 151, 159, 

 486, 517 



as sensitizer, 517 

 Thiorhodaceae. See Purple sulfur bacteria 

 Thiosinamine. See Allylthiourea 

 Thiosulfate, in CS, 115, 116 



as reductant in PR, 103, 104 

 Thunderstorm, effect on PS, 321 

 Toluene as reductant in CS, 118 

 Topochemical mechanism of PS, 152 

 Transpiration energy, 9 

 Triases as intermediates in PS, 240 

 Tritium, PS with T2O, 298, 557 



U 



Ultraviolet light, specific photochemical 



effects, 71, 81, 272, 344-346, 430, 501, 



532, 537, 564 

 Uranium compounds, effect on greening, 

 429 



as sensitizers, 78, 84, 85 

 Urethan inhibition, of catalase, 284 



of C*02 uptake in fight, 242 



of CS, 113 



of Hill's reaction, 66 



of hydrogen bacteria, 117 



of nitrate reduction, 539-540 



of O2 uptake by grana, 503 



of PS and R, 284, 300, 321-324 

 Urethan stimulation, of PO, 528, 538 



of PS, 342 



V 



Valerate as food, 261 



Violaxanthol in plants, 415, 416 



Viologens, 233, 457 



Visual purple, photochemistry, 521-522 



Vitamins, A, 471 



C. See Ascorbic acid 



K, 314 

 Volatile components of leaves, 252-255 



W 



Water, deficiency. See Dehydration 

 effect on greening, 429 

 energy, 283 



interaction with Chi, 450-451 

 participation, in photosynthesis, 23, 57, 

 153, 289 

 in photovoltaic and photogalvanic 

 effect, 76 

 spectrum and primary photoprocess, 71 



