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Further characterization of cytochrome P450 involved in phytoalexin synthesis in soybean: cytochrome P450 cinnamate 4-hydroxylase and 3,9-dihydroxypterocarpan 6a-hydroxylase.

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Two cytochrome P450 enzymes, cinnamate 4-hydroxylase (C4H) and 3,9-dihydroxypterocarpan 6a-hydroxylase (D6aH), were isolated from elicitor-challenged soybean (Glycine max) cell cultures (G. Kochs and H. Grisebach, 1989, Arch. Biochem. Biophys. 273, 543-553). An earlier purification protocol was

A mechanistic study on the toxic effect of copper oxide nanoparticles in soybean (Glycine max L.) root development and lignification of root cells.

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Copper oxide nanoparticles (CuONPs) are widely used in several products and their release into the environment can cause toxicity to major food crops. In this study, toxic responses as a result of CuONPs exposure were studied in soybean (Glycine max L.) seedlings. The plants were grown in 1/2

Phytoalexin synthesis in soybean: purification and reconstitution of cytochrome P450 3,9-dihydroxypterocarpan 6a-hydroxylase and separation from cytochrome P450 cinnamate 4-hydroxylase.

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Elicitor-challenged soybean (Glycine max) cell cultures were used for detergent solubilization and purification of cytochrome P450 3,9-dihydroxypterocarpan 6a-hydroxylase (D6aH). D6aH was purified to electrophoretic homogeneity from such cells by a five-step procedure. It could be separated from

Molecular cloning and expression of 4-coumarate:coenzyme A ligase, an enzyme involved in the resistance response of soybean (Glycine max L.) against pathogen attack.

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We have isolated three classes of cDNAs that probably encode three 4-coumarate:coenzyme A ligase (4CL) isoenzymes in soybean (Glycine max L.). The deduced amino acid sequences reveal several regions of extended sequence identity among 4CLs of all plants analyzed to date. The sequences of two of

Soybean (Glycine max) root lignification induced by ferulic acid. The possible mode of action.

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Ferulic acid, in the form of feruloyl CoA, occupies a central position as an intermediate in the phenylpropanoid pathway. Due to the allelopathic function, its effects were tested on root growth, H(2)O(2) and lignin contents, and activities of cinnamyl alcohol dehydrogenase (CAD, EC 1.1.1.195) and

Exogenous caffeic acid inhibits the growth and enhances the lignification of the roots of soybean (Glycine max).

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The allelopathic effect of caffeic acid was tested on root growth, phenylalanine ammonia-lyase (PAL) and peroxidase (POD) activities, hydrogen peroxide (H(2)O(2)) accumulation, lignin content and monomeric composition of soybean (Glycine max) roots. We found that exogenously applied caffeic acid

Identification of elicitor-induced cytochrome P450s of soybean (Glycine max L.) using differential display of mRNA.

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Elicitor-inducible glyceollin biosynthesis in soybean depends on five presumably transcriptionally regulated cytochrome P450-dependent enzymes (P450s). In order to isolate corresponding cDNA clones, we devised a novel polymerase chain reaction (PCR)-based approach targeting P450s that are

[Expressing and functional analysis of GmMYBJ6 from soybean].

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MYB transcription factor is one of the largest families in plants, which plays an important role in regulating plant development and physiological metabolism. In this study, the expression and function of the new MYB transcription factor gene GmMYBJ6 (GenBank No. DQ902863), isolated from soybean

A gene-fusion approach to enabling plant cytochromes p450 for biocatalysis.

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Cytochromes P450 from plants have the potential to be valuable catalysts for industrial hydroxylation reactions, but their application is hindered by poor solubility, the lack of suitable expression systems and the requirement of P450s for auxiliary redox-transport proteins for the delivery of

Cyclic GMP acts as a common regulator for the transcriptional activation of the flavonoid biosynthetic pathway in soybean.

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Cyclic GMP (cGMP) is an important signaling molecule that controls a range of cellular functions. So far, however, only a few genes have been found to be regulated by cGMP in higher plants. We investigated the cGMP-responsiveness of several genes encoding flavonoid-biosynthetic enzymes in soybean

Synthesis and inhibitory activity of mechanism-based 4-coumaroyl-CoA ligase inhibitors.

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4-Coumaroyl-CoA ligase (4CL) is ubiquitous in the plant kingdom, and plays a central role in the biosynthesis of phenylpropanoids such as lignins, flavonoids, and coumarins. 4CL catalyzes the formation of the coenzyme A thioester of cinnamates such as 4-coumaric, caffeic, and ferulic acids, and the

Gene expression in the lignin biosynthesis pathway during soybean seed development.

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The study of gene expression in plants is fundamental, and understanding the molecular mechanisms involved in important biological processes, such as biochemical pathways or signaling that are used or manipulated in improvement programs, are key for the production of high-quality soybean seeds.

Cinnamic acid increases lignin production and inhibits soybean root growth.

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Cinnamic acid is a known allelochemical that affects seed germination and plant root growth and therefore influences several metabolic processes. In the present work, we evaluated its effects on growth, indole-3-acetic acid (IAA) oxidase and cinnamate 4-hydroxylase (C4H) activities and lignin

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