INDEX 



511 



photosynthesis during, 207-208, 211, 



359, 371. 

 reversible spectral changes in chloro- 

 phyll solutions caused by, 31 - 

 36. 

 Flash-photolytic method, 8-9, 85. 

 Flash saturation, 83, 369-372. 

 Flash yield, 355-357. 



dependence of growth conditions of, 



371. 

 of Scenedesmus , 366-368. 

 Flashing light. See Flash iUnminatinrt. 

 Flavin mononucleotide. See FMN. 

 Flavin radical, 95. 

 Fluorescein 



limiting quantum .yield of, 52. 

 quantum yield of fluorescence of, 

 108-111. 

 Fluorescence 

 activation of 



in chlorophyll, 13. 

 in pheophytin, 13. 

 of chlorophyll c, 17-18. 

 of chlorophj'U d, 17-18. 

 effect of temperature on, 116. 

 emission by green plants of, 107, 



113, 121, 142, 338. 

 following a dark period, 108. 

 of pheophytin, 13. 

 of pheoph.ytin a, 17-18. 

 of pheophj'tin h, 17-18. 

 of pheophytin d, 17-18. 

 of pigments, 102-103, 107-111. 

 polarization of, 6, 462. 

 of Porphra lacineata, 126. 

 relation to oxygen burst of, 428. 

 Fluorescence spectra, of protochloro- 



phyll, 17-18. 

 Fluorescence yield. See Chlorophyll 



fluorescence. 

 Fluorescent dyes 



in bound state, 52-55. 

 reduction potential of, 55. 

 Fluoride, effect on photosynthesis of, 



410. 

 FMN, as cofactor in photophosphoryla- 



tion, 303, 311, 340-343. 

 Formazans, from reduction of tetra- 

 zolium salts, 51. 



Gamma radiation, effect on greening of, 



227. 

 Gas exchange. See also Carbon dioxide 

 exchange, Oxygen exchaiiqe. 

 transients in 

 in algae, 406-408. 

 in leaves, 399-405. 

 Gleditsia tricanthos, Hill reaction ac- 

 tivity in, 280. 

 Glucose, effect on oxygen evolution in 



nitrate reduction, 242, 251. 

 Glutathione, used in photoreduction of 



thionine, 50. 

 Glycolic acid 



exchange with bicarbonate of, 228. 

 excretion by Chlamydomonas of, 228. 

 excretion by Chlorella of, 228-231. 

 from pentose, 230. 

 Grana 

 of blue-green algae, 274. 

 carboxylation enzyme in, 292. 

 chlorophyll in 



concentration of, 6, 21. 

 orientation of, 461. 

 in chloroplasts, 292, 459-462. 

 e.xcitation energy in, 21, 161. 

 orientation of pigment molecules of 



6, 161, 459, 464. 

 scattering of light by, 103, 172. 

 Green algae, 118-119, 243-247, 251- 

 253. See also Chlorella, Scene- 

 desmus. 

 absorption and scattering of light by, 



101. 

 relation of background CO2 fixation 

 to photosynthesis by, 205-212. 

 Green sulfur bacteria, 153-155. 

 Growth medium, effect on periodicitj' 



of, 498. 

 Gymnocladus dioica, Hill reaction ac- 

 tivity of, 280. 



HON, 78, 105, 218. 

 Heavy water 



effect on photosynthesis of, 387. 



Hill reaction in, 384-387. 



