2076 



SUBJECT INDEX 



in vivo, 705, 1764, 1808 

 "active" and "inactive" form?, 1766, 



1767-68, 1808, 1881 

 in Chi genesis, 1770 

 as Chi precursor, 404-05, 431, 1759-68, 



1770 

 conversion to Chi, 404-05, 431, 445, 

 457, 1759-68 

 action spectrum, 1763-64 

 autocatalysis?, 430, 1763-64 

 and beginning of PS, 1267, 1767 

 and beginning of HR activity, 1267 

 in corn mutants, normal, albino, and 



virescent, 1764 

 in dark, 1766 

 with help of pine seedUng extract, 



1765 

 effect of streptomycin, 1766-67 

 kinetics, 1765 

 no O2 evolution, 1764 

 temperature dependence, 1765 

 two stages, 1667-68, 1761, 1766 

 fluorescence, in vitro, 748, 1838, 1881 



in vivo, 811, 1881 

 formation, in vitro, by Chi oxidation?, 



463 

 molecular structure, 445, 623 

 occurrence, 404 

 a porphyrin, 623 

 reversible reduction (chemical and 



photochemical), 1505 

 as sensitizer of oxidoreductions in vitro, 



1516 

 two forms in vivof, 1766, 1767-68, 1808, 

 1881 

 Protochlorophyll b, 404, 619, 1766 

 Protopheophytin, 623 

 Protoplasma, viscosity, as function of 



temperature, 1220, 1225 

 Protoporphyrin, quenching of fluorescence, 

 1833 

 as sensitizer in actinometer, 1521 

 Protoporphyrin 9, in Chlorella mutants, 



1768, 1769 

 Purpurea leaves, 401, 480, 685 

 Purple bacteria. See Bacteria, photosyn- 



thetic 

 Pyrenoids, 43, 356, 359 



Pyridine, binding to Chi?, 1504 



effect on reversible reduction of Chi and 

 Pheo, 1504, 1506-07 

 Pyridine nucleotides 



Pyridine nucleotides, ATP formation in 

 their oxidation, 1700 

 concentration changes in induction, 



1406 

 effect on C( 14)02 uptake by chloro- 



plasts, 1536 

 as energy source in PS, 1703, 1707 

 formation detected by firefly extract, 



1705 

 oxidized, as oxidants in HR, 1577-85 

 as oxidants for photoreduced Chi in 

 vitro, 1515-17 

 partial reoxidation contributing ATP 



energy for PS, 1703, 1707 

 redox potentials, 222, 1518, 1585 

 reduced, as reductants for PGA in PS?, 

 226, 1687, 1700, 1703, 1707, 1986 

 Pyropheophorbide a monomethyl ester, ab- 

 sorption spectrum, 627 

 Pyrophosphate, effect on HR, 1612 

 Pyrrole, 440 



as Chi precursor in biogenesis, 1770 

 effect on reversible bleaching of Chi and 

 Pheo, 1506 

 Pyrrole carbonate, used for Chi synthesis 



in vivof, 428-29 

 Pyruvic acid 



Pyruvic acid, C(14) tagging, in chloro- 

 plasta in light, 1535 

 C(14) tagging, in dark after pre-illu- 

 mination, 1640, 1651-54 

 in Ught, 1641, 1650-54, 1656-59, 

 1662, 1668, 1677 

 chloroplast-sensitized reduction and 

 reductive carboxylation, 1577-85 

 energ}', content, 216 

 of decarboxylation, 184 

 of reduction and reductive carboxyla- 

 tion, 218 

 as photoreductant for Chi in solution?, 



1502, 1504, 1514 

 as plant food, 266 



reversible carboxjdation, 1632, 1691 

 reversible decarboxylation, 185, 1632, 

 1691 



Volume I, pp. 1-599; Volume II. 1, pp. 601-1208; Volume II.2, pp. 1209-2088 



