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Lignan and flavonoids from the stems of Zea mays and their anti-inflammatory and neuroprotective activities.

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Logáil Isteach / Cláraigh

The stems of Zea mays L., otherwise known as cornstalks, were extracted with 80 % aqueous MeOH, and the concentrated extract was successively partitioned with ethyl acetate (EtOAc), normal butanol, and water. From the EtOAc fraction, a new lignan along with three known flavonoids, tricin (1),

Tricin, a flavonoid monomer in monocot lignification.

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Logáil Isteach / Cláraigh

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

Silencing CHALCONE SYNTHASE in Maize Impedes the Incorporation of Tricin into Lignin and Increases Lignin Content.

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Logáil Isteach / Cláraigh

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

Maize Tricin-Oligolignol Metabolites and Their Implications for Monocot Lignification.

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Logáil Isteach / Cláraigh

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

Changes in Cell Wall Polymers and Degradability in Maize Mutants Lacking 3'- and 5'-O-Methyltransferases Involved in Lignin Biosynthesis.

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Logáil Isteach / Cláraigh

Caffeoyl coenzyme A 3-O-methyltransferase (CCoAOMT) and caffeic acid-O-methyltransferase (COMT) are key enzymes in the biosynthesis of coniferyl and sinapyl alcohols, the precursors of guaiacyl (G) and syringyl (S) lignin subunits. The function of these enzymes was characterized in single and double

Cell wall modifications triggered by the down-regulation of Coumarate 3-hydroxylase-1 in maize.

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Logáil Isteach / Cláraigh

Coumarate 3-hydroxylase (C3H) catalyzes a key step of the synthesis of the two main lignin subunits, guaiacyl (G) and syringyl (S) in dicotyledonous species. As no functional data are available in regards to this enzyme in monocotyledonous species, we generated C3H1 knock-down maize plants. The

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Herbal & Natural Medicine

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