Maize Tricin-Oligolignol Metabolites and Their Implications for Monocot Lignification1[OPEN]
نویسندگان
چکیده
Department of Energy Great Lakes Bioenergy Research Center, Wisconsin Energy Institute (W.L., F.L., J.Ra.), Department of Biological System Engineering (W.L., J.Ra.), and Department of Biochemistry (F.L., J.Ra.), University of Wisconsin, Madison, Wisconsin 53726; Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie, B–9052 Ghent, Belgium (K.M., W.Vo., W.B.); Department of Plant Biotechnology and Bioinformatics, Ghent University, B–9052 Ghent, Belgium (K.M., W.Vo., W.B.); State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 510641 Guangzhou, People’s Republic of China (F.L.); Instituto de Recursos Naturales y Agrobiologia de Sevilla, Consejo Superior de Investigaciones Científicas, 41012 Seville, Spain (J.Re., J.C.d.R.); and Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences (IFAS), and Genetics Institute, University of Florida, Gainesville, Florida 32611 (W.Ve.)
منابع مشابه
Maize Tricin-Oligolignol Metabolites and Their Implications for Monocot Lignification.
Lignin is an abundant aromatic plant cell wall polymer consisting of phenylpropanoid units in which the aromatic rings display various degrees of methoxylation. Tricin [5,7-dihydroxy-2-(4-hydroxy-3,5-dimethoxyphenyl)-4H-chromen-4-one], a flavone, was recently established as a true monomer in grass lignins. To elucidate the incorporation pathways of tricin into grass lignin, the metabolites of m...
متن کاملSilencing CHALCONE SYNTHASE in Maize Impedes the Incorporation of Tricin into Lignin and Increases Lignin Content.
Lignin is a phenolic heteropolymer that is deposited in secondary-thickened cell walls, where it provides mechanical strength. A recent structural characterization of cell walls from monocot species showed that the flavone tricin is part of the native lignin polymer, where it is hypothesized to initiate lignin chains. In this study, we investigated the consequences of altered tricin levels on l...
متن کاملTricin, a flavonoid monomer in monocot lignification.
Tricin was recently discovered in lignin preparations from wheat (Triticum aestivum) straw and subsequently in all monocot samples examined. To provide proof that tricin is involved in lignification and establish the mechanism by which it incorporates into the lignin polymer, the 4'-O-β-coupling products of tricin with the monolignols (p-coumaryl, coniferyl, and sinapyl alcohols) were synthesiz...
متن کاملSbCOMT (Bmr12) is involved in the biosynthesis of tricin-lignin in sorghum
Lignin in plant biomass represents a target for engineering strategies towards the development of a sustainable bioeconomy. In addition to the conventional lignin monomers, namely p-coumaryl, coniferyl and sinapyl alcohols, tricin has been shown to be part of the native lignin polymer in certain monocot species. Because tricin is considered to initiate the polymerization of lignin chains, eluci...
متن کاملDisrupting Flavone Synthase II Alters Lignin and Improves Biomass Digestibility1[OPEN]
Lignin, a ubiquitous phenylpropanoid polymer in vascular plant cell walls, is derived primarily from oxidative couplings of monolignols (p-hydroxycinnamyl alcohols). It was discovered recently that a wide range of grasses, including cereals, utilize a member of the flavonoids, tricin (39,59-dimethoxyflavone), as a natural comonomer with monolignols for cell wall lignification. Previously, we es...
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تاریخ انتشار 2016