Oxidative Stress in Plants Causes, Consequences and Tolerance

Oxidative Stress in Plants Causes, Consequences and Tolerance
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Oxidative Stress in Plants Causes, Consequences and Tolerance

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Publisher: IK International
ISBN: 9789381141021
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PREFACE Plant growth, development and productivity are affected by different adverse environments. The majority of adverse environments cause multifarious undesirable effects in plants. Of them, production of reactive oxygen species ROS is a common phenomenon. These ROS are highly reactive because they can interact with a number of cellular molecules and metabolites thereby leading to a number of destructive processes causing cellular damage. Plants possess to a variable extent antioxidant metabolites, enzymes and non-enzymes that have the ability to detoxify ROS thus, to protect the photosynthetic- and cellular functions against ROS-accrued oxidative stress and to maintain optimum growth, development and productivity under changing environment. In the present volume, the emphasis of discussion has been on understanding the causes of oxidative stress, its consequences and the biological significance of various antioxidant molecules in plants. In particular, the role of different antioxidants as potential selection criteria for improving plant tolerance to oxidative stress has been critically discussed at length in different chapters contributed by eminent researchers and scientists from over the globe. However, occasional overlaps of information between chapters could not be avoided moreover, they reflect the central and multiple aspects of the causes, consequences of oxidative stress and strategies for enhancing tolerance to oxidative stress in detail in the light of the advances in molecular biology. Chapter 1 introduces the concept of oxidative stress in plants and the role of important antioxidants in plant tolerance. Chapters 2 and 3 discuss various environmental factors affecting different components of ascorbate-glutathinone pathway and the regulatory role of components of the pathway in plant tolerance to oxidative stress in detail. Chapters 4 to 13 describe the insights of the significance of enzymatic and non-enzymatic antioxidants including ascorbate and glutathione in the protection of plant growth and metabolism against various stress factors including heavy metals-, salinity- and UV-B-accrued oxidative stress. Chapter 14 deals with the role of different secondary metabolites as non-enzymatic plant protectors against oxidative stress in plants. Chapter 15 is concerned with the role of ascorbate in the growth and development of cells during the formation of annual rings in coniferous trees. Chapter 16 deals mainly with the modulation of glutathione, its redox couple and related major enzymes in plants under abiotic stress conditions whereas the last Chapter 17 summarizes major heavy metals in plants and soil and their effects on important components of plant antioxidant defense system. Like all creative works, completing a book in any discipline is really a hard work to accomplish. We are thankful to contributors for their significant manuscripts and for their full faith and cooperation that eventually made the present volume possible. We offer our sincere thanks to Mr. HS Poplai, the Publishing Manager and his team at IK International Publishing House, New Delhi, INDIA for their efficient and friendly cooperation which made our efforts successful in bringing out the present treatise.
viii Preface Contents Thanks are also due to all the well-wishers, teachers, seniors, research students and family. Without their unending support, motivation and encouragement the present grueling task would have never been completed. We are also thankful to the Foundation for Science Technology FCT , PORTUGAL SFRH BPD 64690 2009 , Council of Scientific Industrial Research CSIR , New Delhi, INDIA 9 112 0401 2K8-EMR-I 312208 2K7 1 , Agricultural Biotechnology Research Center ABRC , Academia Sinica, TAIWAN, the Department of Science and Technology DST , New Delhi, INDIA, Potash Research Institute of India PRII , Gurgaon, INDIA and International Potash Institute IPI , SWITZERLAND for providing financial assistance to our research work. Last but not least, we bow in reverence to Allah, Who blessed us with an innumerable