Journal ArticleDOI
Biochemistry of lignification
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The complete set of enzymes that catalyze the reactions from l-phenylalanine to substituted cinnamyl alcohols is now known as discussed by the authors, and the individual reactions and the possible modes of regulation of this pathway are discussed.Abstract:
The complete set of enzymes that catalyze the reactions from l-phenylalanine to substituted cinnamyl alcohols is now known. The latter compounds are the primary building stones of lignin. The individual reactions and the possible modes of regulation of this pathway are discussed. The polymerization of cinnamyl alcohols to lignin is mediated by peroxidase. The significance of cell-wall-bound peroxidases in this process and the origin of hydrogen peroxide are reviewed. Finally, the possible role of lignification in relation to disease resistance is discussed.read more
Citations
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Journal ArticleDOI
Lignification as a Mechanism of Disease Resistance
TL;DR: This review deals with the formation of lignin as a mechanism of resistance to plant disease and the possible specificity of lIGNin formation in disease resistance remains unresolved.
Journal ArticleDOI
Enzymic Controls in the Biosynthesis of Lignin and Flavonoids
Klaus Hahlbrock,Hans Grisebach +1 more
Journal ArticleDOI
Phenolic compounds in plant disease resistance
Ulrich Matern,Richard E. Kneusel +1 more
TL;DR: It is proposed that an important first line in plant defense against infection is provided by the very rapid synthesis of phenolics and their polymerization in the cell wall, regulated by the extreme pH-dependence of the hydroxylase, catalyzing the formation of caffeoyl-CoA from 4-coumaroyl
Journal ArticleDOI
Isolation and characterization of Populus isoperoxidases involved in the last step of lignin formation.
TL;DR: Peroxidases (EC 1.11.1.7) from Populus x euramericana were investigated during the dormant and growing seasons using histochemical and biochemical methods and showed the presence of an anionic fast-migrating isoperoxidase group with a high syringaldazine-oxid enzyme activity.
References
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Book
Lignins. Occurrence, Formation, Structure and Reactions
TL;DR: In this paper, a treatise on lignin sifts and knowledge accumulated from over a century of thought on nature's most enigmatic polymer and presents a workable, logical text.
Book
Constitution and Biosynthesis of Lignin
TL;DR: This book will help you to understand the constitution and biosynthesis of lignin book much better and the system of this book of course will be much easier.
Journal ArticleDOI
Phenylalanine ammonia lyase
Edith L. Camm,G.H.Neil Towers +1 more
TL;DR: The literature concerning the physiology and biochemistry of the enzyme phenylalanine ammonia lyase (PAL) (E.C. 4.1.1) from different organisms has been reviewed as mentioned in this paper.
Journal ArticleDOI
Lignin: Its Constitution and Formation from p-Hydroxycinnamyl Alcohols Lignin is duplicated by dehydrogenation of these alcohols; intermediates explain formation and structure
TL;DR: The conversion of p-hydroxycinnamyl alcohols and their glucosides into lignin is illustrated in vitro and in vivo for spruce.
Journal ArticleDOI
Lignification in trees: indication of exclusive peroxidase participation.
John M. Harkin,John R. Obst +1 more
TL;DR: Syringaldazine did not turn purple on cross sections of tree branches or saplings or on cambial tissue cultures unless hydrogen peroxide was added; this indicated the absence of laccase but presence of peroxidase in lignifying cells, apparently is the only enzyme that polymerizes p-coumaryl alcohols to lignin in trees.
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Lignification in trees: indication of exclusive peroxidase participation.
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