phenolic/nicotiana

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Correlation of antiangiogenic, antioxidant and cytotoxic activities of some Sudanese medicinal plants with phenolic and flavonoid contents.

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BACKGROUND Consumption of medicinal plants to overcome diseases is traditionally belongs to the characteristics of most cultures on this earth. Sudan has been a host and cradle to various ancient civilizations and developed a vast knowledge on traditional medicinal plants. The present study was

Phenolic compounds from Nicotiana tabacum and their biological activities.

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Three new phenolic compounds, nicotphenols A-C (1-3), together with 14 known phenols (4-17), were isolated from the leaves of Nicotiana tabacum. Their structures were established by means of spectroscopic methods, including extensive 1D and 2D NMR techniques. Compounds 1-3 were tested for their

Patterns of phenolic compounds in leafy galls of tobacco.

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The chemical composition of ethanolic and aqueous extracts from leafy galls produced after infection of Nicotiana tabacum L. plants with Rhodococcus fascians was drastically changed compared to uninfected controls. Chlorogenic acid was abundant both in uninfected and infected plants, but caffeic

Chromium accumulation and changes in plant growth, selected phenolics and sugars of wild type and genetically modified Nicotiana langsdorffii.

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Chromium accumulation, dry weight (DW) biomass yield, water content and concentrations of some selected phenolic compounds and carbohydrates were determined in root and shoot of Nicotiana langsdorffii, either wild type (WT) or genetically modified by the insertion of GR and rolC genes, in response

Analysis of phenolic compounds by high-performance liquid chromatography coupled to electrospray ionization tandem mass spectrometry in senescent and water-stressed tobacco.

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Evaluation of a significant part of the phenylpropanoid pathway metabolites is facilitated by the fast high-performance liquid chromatography with electrospray ionization tandem mass spectrometry (LC-MS/MS) analytical method. The technology described was applied in tobacco plants (Nicotiana tabacum

Effect of photoperiod and end-of-day light quality on alkaloids and phenolic compounds of tobacco.

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Tobacco plants (Nicotiana tabacum L.) were grown on long or short photoperiods followed by 5 minutes of red or far red radiation each day. Plants that received 16-hour photoperiods had a significantly higher concentration of total alkaloids and total phenolics than those that received 8-hour

RNA-seq, de novo transcriptome assembly and flavonoid gene analysis in 13 wild and cultivated berry fruit species with high content of phenolics.

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Flavonoids are produced in all flowering plants in a wide range of tissues including in berry fruits. These compounds are of considerable interest for their biological activities, health benefits and potential pharmacological applications. However, transcriptomic and genomic resources

Direct action of the biocide carbendazim on phenolic metabolism in tobacco plants.

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In view of the essential role of phenolic compounds in the development of pathogen resistance in plants, and given the influence that fungicides exert over phenolic metabolism, the aim of the present study was to determine the effect of the application of different rates of fungicide on the

Expression of a bacterial, phenylpropanoid-metabolizing enzyme in tobacco reveals essential roles of phenolic precursors in normal leaf development and growth.

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Tobacco plants (Nicotiana tabacum cv XHFD 8) were genetically modified to express a bacterial 4-hydroxycinnamoyl-CoA hydratase/lyase (HCHL) enzyme which is active with intermediates of the phenylpropanoid pathway. We have previously shown that HCHL expression in tobacco stem resulted in various

Correlation between Phenylalanine Ammonia Lyase Activity and Phenolic Biosynthesis in p-Fluorophenylalanine-sensitive and -resistant Tobacco and Carrot Tissue Cultures.

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Phenylalanine ammonia lyase (PAL) activity was measured in p-fluorophenylalanine (PFP)-sensitive and -resistant tobacco (Nicotiana tabacum L.) and carrot (Daucus carota L.) cell lines which are known to oversynthesize phenylalanine. A correlation between phenolic levels and PAL activities was

Malonylation is a key reaction in the metabolism of xenobiotic phenolic glucosides in Arabidopsis and tobacco.

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Tobacco cells (Nicotiana tabacum L.) accumulate harmful naphthols in the form of malonylated glucosides (Taguchi et al., 2005). Here, we showed that the malonylation of glucosides is a system to metabolize xenobiotics and is common to higher plants. Moreover, some plantlets including Arabidopsis

Phenolics production by encapsulated Nicotiana tabacum cells.

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Plant cells of tobacco (Nicotiana tabacum L.) were grown for several generations in suspension cultures. Cells were immobilized in continuous bioreactors in calcium alginate (Ca Alg) beads or in poly-L-lysine (PLL) encapsulated calcium alginatehydrogels. In each case, the cells were fed continuously

Environmental parameters influencing phenolics production by batch cultures of Nicotiana tabacum.

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The influence of temperature, illumination, hormonal levels (2,4-D and kinetin), carbon to nitrogen ratios, antibiotics, and precursor feeding on phenolics production by Nicotiana tabacum (tobacco) was studied. This plant cell system was chosen as a model system to learn more about secondary product

Multistage continuous culture to examine secondary metabolite formation in plant cells: Phenolics from Nicotiana tabacum.

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The feasibility of operating a multistage continuous culture of plant cells was demonstrated for Nicotiana tabacum. Cells in the second stage of a two-stage chemostat were morphologically distinct from cells in the first stage or cells in a single-stage unit with a holding time equal to the combined

Solar ultraviolet-B radiation and insect herbivory trigger partially overlapping phenolic responses in Nicotiana attenuata and Nicotiana longiflora.

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OBJECTIVE Plants exposed to solar ultraviolet-B radiation (UV-B, 280-315 nm) frequently suffer less insect herbivory than do plants that receive attenuated levels of UV-B. This anti-herbivore effect of solar UV-B exposure, which has been documented in several ecosystems, is in part mediated by

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