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Chlorophyll Biosynthesis and Technological Applications
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Main description:

Heme and chlorophyll (Chl) are porphyrins. Porphyrins (also referred to as tetrapyrroles) are essential for life in the biosphere. Chlorophyll catalyzes the conversion of solar energy to chemical energy via the process of photosynthesis. Organic life in the biosphere is made possible by consumption of the chemical energy generated by photosynthesis.
Hemes are the prosthetic groups of cytochromes which are involved in electron transport during oxidative phosphorylation and photosynthetic phosphorylation which generate ATP and NADPH. The latter are essential for many cellular functions.
Chlorophyll on the other hands catalyzes the process of photosynthesis. Indeed, life in the biosphere depends on the process of photosynthesis which converts light energy, carbon dioxide and water into the chemical energy, required for the formation of food and fiber. Photosynthetic efficiency is controlled by extrinsic factors such as the availability of water, CO2, inorganic nutrients, ambient temperature and the metabolic and developmental state of the plant, as well as by intrinsic factors (Lien and San Pietro, 1975). The most important intrinsic factor is the efficiency of the photosynthetic electron transport system (PETS).
Conventional agriculture is one of the few human activities that have not undergone a revolution to join other activities such as overcoming gravity by flying, and landing on the moon, crossing underwater the polar cap, and communicating wirelessly over long distances via electromagnetic waves. We now feel that enough biochemical and molecular biological knowledge has accumulated to render this dream amenable to experimentation. We believe that the time has come to bioengineer chloroplasts capable of synthesizing a short chain carbohydrate such as glycerol at rates that approach the upper theoretical limits of photosynthesis [Rebeiz, C. A. (2010) Investigations of possible relationships between the chlorophyll biosynthetic pathway and the assembly of chlorophyll-protein complexes and photosynthetic efficiency. In: Rebeiz, C. A. Benning, C., Bohnert, H.J., Daniell, H., Hoober J. K., Lichtenthaler, H. K., Portis , A. R., and Tripathy, B. C. eds. The chloroplast: Basics and Applications. Springer. The Netherlands, p 1-24]. In order to achieve this goal a thorough knowledge of the Chl biosynthetic pathway is needed along with knowledge in other domains (Rebeiz 2010). In this context, this monograph is devoted to an in depth discussion of our present knowledge of the Chl biosynthetic pathway. The complexity and biochemical heterogeneity of the Chl biosynthetic pathway and the relationship of this complexity to the structural and biosynthetic complexity of photosynthetic membranes will be emphasized. We will also emphasize in historical perspective, key stages in our understanding of the Chl biosynthetic heterogeneity. The reader should keep in mind that a complex biosynthetic process is only fully understood when it becomes possible to reconstitute in vitro every step of the process. We are not yet at this stage of understanding of thylakoid membrane biogenesis. Considerable progress has been achieved however, in the understanding of numerous facets of the Chl biosynthetic pathway, namely (a) detection and identification of various major and minor metabolic intermediates (b) precursor-product relationships between various intermediates, (c) structure and regulation of many enzymes of the pathway, and (d) the relationship of the Chl biosynthetic heterogeneity to the structural and functional heterogeneity of thylakoid membranes.
In addition topics related to the development of Analytical techniques, Cell-free systems, Herbicides, Insecticides, and Cancericides are also discussed.


Highly original

Covers plant physiology, biochemistry, biophysics, molecular biology

Contains two appendices of about 4.000 pages of molecular biology searches

Back cover:

This book provides an essential summary of an exciting decade of research on relationships between lipids and photosynthesis.  This book, designed both for scientists whose work focuses on photosynthesis and lipids and for graduate students who are developing an interest in the field, brings together extensively cross-referenced and peer-reviewed chapters by 52 prominent researchers, from 9 countries.  The topics covered include the structure, molecular organization and biosynthesis of fatty acids, glycerolipids and non-glycerolipids in plants, mosses, lichens, algae, and cyanobacteria, as well as in chloroplasts and mitochondria.  Several chapters deal with the manipulation of the extent of unsaturation of fatty acids and the effects of such manipulation on photosynthesis and responses to various forms of stress.  The final chapters focus on lipid trafficking, signaling and advanced analytical techniques.  Ten years ago, Paul André Siegenthaler and Norio Murata had edited "Lipids in Photosynthesis: Structure, Function and Genetics," which has been a unique and an authoritative book in the field.  The current new volume belongs, beside its predecessor, on every plant and microbiological researcher's bookcase.


Dedication.- Preface.- Author Biography.- 1. Some Major Steps in the Understanding of the Chemistry and Biochemistry of Chl.- 2. Synopsis.- 3. Development of Analytical and Preparatory Techniques.- 4. Development of Cell-free Systems.- 5. Reactions between δ-Aminolevulinic Acid and Protoporphyrin IX.- 6. The Iron and Magnesium Branches of the Porphyrin Biosynthetic Pathway.- 7. The Chl a Carboxylic Biosynthetic Routes: Reactions between Mg-Protoporphyrin IX and Protochlorophyllide a.- 8. The Chl a Carboxylic Biosynthetic Routes: Protochlorophyllide a.- 9. The Chl a Carboxylic Biosynthetic Routes: (Photo)Conversion of Protochlorophyllides (Pchlides) a to Chlorophyllide (Chlide) a.- 10. The Chl a Carboxylic Biosynthetic Routes: Conversion of Chlide a to Chl a.- 11. The Fully Esterified Chlorophyll a Biosynthetic Routes: Reactions between Mg-Protoporphyrin IX Diester and Chl a.- 12. The Chlorophyll b Biosynthetic Pathway: Novel Metabolic Intermediates.- 13. The Chl b Biosynthetic Pathway: Intermediary Metabolism.- 14. Relationship of Chlorophyll Biosynthetic heterogeneity to the Greening Group affiliation of Plants.- 15. Relationship of Chlorophyll biosynthesis to the Assembly of Chlorophyll-Protein Complexes.- 16. The Chlorophyll Biosynthetic Heterogeneity and Chloroplast Bioengeneering.- 17. Photodynamic Herbicides.- 18. Photodynamic Insecticides.- 19. ALA-Dependent Cancericides.- Appendix I. Sequenced Chlorophyll Biosynthetic Enzymes.- Appendix II. Sequenced Apoproteins of the Chloroplast Pigment-Protein Complexes.


ISBN-13: 9789400771345
Publisher: Springer (Springer Netherlands)
Publication date: November, 2013
Pages: 500

Subcategories: Biochemistry