Photophysiology - 1st Edition - ISBN: 9780122826061, 9781483262215

Photophysiology

1st Edition

Current Topics in Photobiology and Photochemistry

Editors: Arthur C. Giese
eBook ISBN: 9781483262215
Imprint: Academic Press
Published Date: 1st January 1971
Page Count: 404
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Description

Photophysiology: Current Topics in Photobiology and Photochemistry, Volume VI is a collection of papers that discusses photobiological phenomena found on cells of organisms. The papers in this collection deal with specialized areas of photobiology. One paper describes the instruments used in measuring the course of chlorophyll fluorescence in vivo that occurs when a chlorophyll molecule, stimulated by a light source, returns to its ground state from a previous first singlet state, resulting in a light emission lasting for a few nanoseconds. Another paper discusses the mechanism of light-induced carotenoid synthesis in nonphotosynthetic plants, including temperature-independent photochemical reactions, which results in the organism's producing carotenoids on subsequent incubations in darkness. One paper also explains photosensitization observed in mutant cells resulting from exposure to specific wavelength of light in the presence of a natural sensitizer. This paper points out that there are four main groups of photosensitizers, namely, the hypericins, chlorophylls, porphyrins, and psoralens. This book can prove valuable for cell biologists, micro-biologists, students, and researchers involved in the fields of photobiology and photochemistry.

Table of Contents


List of Contributors

Preface

Contents of Other Volumes

Chapter 1. Chlorophyll Fluorescence And Photosynthesis: Fluoresence Transients

1. Introduction

2. Techniques

3. Fast Fluorescence Yield Changes and Electron Transport

4. Slow Fluorescence Yield Changes: The SMT Phase

5. Summary

References

Chapter 2. Mechanism of Light-Induced Carotenoid Synthesis in Nonphotosynthetic Plants

1. Introduction

2. Photoinduction of Carotenogenesis

3. Photochemical Reaction

4. Dark Reactions

5. Mechanism of Photoinduction

6. Relationship to Photodynamic Action

Reference

Chapter 3. Photosensitization by Natural Pigments

1. Introduction

2. Photosensitization by Hypericins

3. Chlorophyll

4. Porphyrins

5. The Furocoumarins—Psoralens

6. Photosensitization of Human Skin by Miscellaneous Phototoxic Substances

7. Summary and Conclusions

References

Chapter 4. Solar UV Irradiation and the Growth And Development of Higher Plants

1. Introduction

2. Plant Reactions to Artificial UV Irradiation

3. Terrestrial Solar Ultraviolet Irradiation

4. Response of Higher Plants to Filtered Solar Irradiation

5. Defense Mechanisms of Higher Plants against Solar UV Irradiation

References

Chapter 5. Photobiology of Plant Viruses

1. Introduction

2. Loss of Infectivity of Irradiated Virus: Causes

3. Inactivation of Free RNA

4. Inactivation of Whole Viruses

5. Photoreactivation

6. Multiplicity Reactivation

7. Effects of Irradiation on Virus Protein

References

Chapter 6. The Roles of Genetic Recombination and DNA Polymerase in the Repair of Damaged DNA

1. Introduction

2. Genetic Recombination

3. Recombinational Repair of UV-Induced Damage

4. New Recombinational Repair Systems?

5. Recombinational Repair of X-Ray-Induced Damage

6. Drugs and Physiological Factors Affecting Recombinational Repair

7. The Role of DNA Polymerase in Repair

8. Conclusions

References

Chapter 7. The Study of Photoenzymatic Repair of UV Lesions in DNA by Flash Photolysis

1. Introduction

2. The Use of Light Flashes in the Analysis of Photoenzymatic Repair

3. Determination of the Number of Photoreactivating Enzyme Molecules

4. The Complex-Formation Step

5. The Photolytic Repair Step

6. Inhibition of Photoenzymatic Repair by Caffeine

7. Discussion and General Outlook

References

Chapter 8. Photoperiodism and Reproductive Cycles in Birds

1. Introduction

2. Photoperiodic Control of Reproduction

3. Photoperiodism and Migratory Cycles

4. References

Author Index

Subject Index


Details

No. of pages:
404
Language:
English
Copyright:
© Academic Press 1971
Published:
Imprint:
Academic Press
eBook ISBN:
9781483262215

About the Editor

Arthur C. Giese