Photoprotection in Plants Optical Screening-based Mechanisms
Optical screening of excessive and potentially harmful solar radiation is an important photoprotective mechanism, though it has received much less attention in comparison with other systems preventing photooxidative damage to photoautotrophic organisms. T
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Alexei Solovchenko
Photoprotection in Plants Optical Screening-based Mechanisms
Dr. Alexei Solovchenko M.V. Lomonosov Moscow State University Department of Biotechnology, Faculty of Biology, Leninskie Gory 1/12 119991 Moscow Russia [email protected]
ISSN 0932-2353 e-ISSN 1868-2561 ISBN 978-3-642-13886-7 e-ISBN 978-3-642-13887-4 DOI 10.1007/978-3-642-13887-4 Springer Heidelberg Dordrecht London New York Library of Congress Control Number: 2010934371 # Springer-Verlag Berlin Heidelberg 2010 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Cover design: WMXDesign GmbH, Heidelberg, Germany Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
Dedicated to the memory of Prof. Mark N. Merzlyak (1946–2009)
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Preface
The ability of certain plant pigments absorbing in the UV and/or photosynthetically active regions of the spectrum to act as internal light filters has been discussed for quite a time. However, the participation of these compounds in photoprotection of plants has received only occasional attention and is much less studied in comparison with “classic” photoprotective mechanisms such as elimination of reactive oxygen species, thermal dissipation of the excessive excitation energy of chlorophyll, and repair of photooxidative damage. Until recently, the photoprotective function of different pigments received little attention. However, during the last two decades, the interest of the scientific community in these pigments (generally named “screening” or “sunscreen” pigments) has grown dramatically. According to major citation databases, the number of publications dedicated to various aspects of plant screening pigments increased more than 3 times and there were 5 times more citations of such works. Still, the coverage of the subject is far from uniform: the overwhelming majority of the works in the field were (and so far are) dedicated to UV-screening compounds, their natural occurrence, and physiology, and the number of studies on compounds attenuating visible radiation remains modest in comparison with the number of studies on UV-screening compounds. This situation seemingly stems from an explosion of interest in o
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