XIV CONTENTS 



Chapter IS, contd. PaGE 



4. Photochemical Oxidation-Reduction Reactions of Chlorophyll 



in vitro 503 



5. Photoreduction of Chlorophyll 505 



C. Chlorophyll as a Sensitizer in vitro 507 



1. Examples of Sensitization by Chlorophyll 507 



2. Different Mechanisms of Sensitization 514 



3. Sensitization by Kinetic Encounters (Type-A Mechanisms) . . . 514 



4. Sensitization within a Complex (Tj^pe-B Mechanisms) 520 



D. Photochemical Properties of the Carotenoids and Phycobilins 521 



Bibliography 523 



Chap. 19. Photochemistry of Pigments in vivo 526 



A. Photautoxidations in vivo 526 



1. Photosynthesis, Photautoxidation, and Photorespiration 526 



2. Photautoxidation in Narcotized or Starved Plants 528 



3. Photautoxidation in the Presence of Excess Oxygen and in In- 

 tense Light 531 



4. The Photoxidation of Chlorophyll in vivo 537 



B. Sensitized Oxidation-Reductions in vivo 538 



1. Chlorophyll-Sensitized Reduction of Nitrate 538 



2. Reduction of Other Inorganic Oxidants 541 



3. Reduction of Organic Oxidants 541 



C. Mechanism of Sensitization in vivo 543 



1. Hypothesis of a Common Primary Process in All Chlorophyll- 

 Sensitized Reactions in vivo 543 



2. Association of Chlorophyll with the Sensitization Substrates; 

 Fluorescence and Sensitization Yields in vitro and in vivo 544 



3. Problem of the Chemical Participation of Chlorophyll in the 

 Primary Process 548 



4. Role of Accessory Pigments in Photosynthesis 557 



Bibliography 558 



Chap. 20. Photosynthesis and Respiration 561 



1. Effect of Respiration on Photosynthesis 562 



2. Effect of Photosynthesis (and Photoxidation) on Respiration . . 563 



3. Effect of Light on Respiration 566 



Bibliography 570 



Author Index of the Main Investigations in Vol. 1 573 



Subject Index 583 



