catharanthine/catharanthus

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Sayfa 1 itibaren 135 Sonuçlar

[Simultaneous determination of vindoline, catharanthine and anhydrovinblastine in Catharanthus roseus by high performance liquid chromatography].

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A high performance liquid chromatographic (HPLC) method with gradient elution was developed for the simultaneous determination of vindoline, catharanthine and anhydrovinblastine in Catharanthus roseus. The analytes were separated on a Waters (5)C18-MS-II column (4.6 mm x 250 mm) and detected at 220

[Analysis of catharanthine content and agronomic traits in Catharanthus roseus].

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Catharanthine content and agronomic traits in major Catharanthus roseus varieties were analyzed. It was found that there existed great difference in catharanthine content and agronomic traits among the varieties. Catharanthine content was the highest in variety Pacifica Polka Dot (PPD), reaching

Ajmalicine, Serpentine, and Catharanthine Accumulation in Catharanthus roseus Bioreactor Cultures.

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A 141, stirred-tank bioreactor was used to investigate the effect of 7% glucose solutions on CATHARANTHUS ROSEUS suspension cultures. Measurement of oxygen uptake rate indicated that alkaloid accumulation occurred primarily during a 20-day transition period between growth-oriented metabolism and

Enhanced catharanthine production in catharanthus roseus cell cultures by combined elicitor treatment in shake flasks and bioreactors.

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Chemical and fungal elicitors were added to Catharanthus roseus cell suspension cultures so as to improve the production of indole alkaloids. A synergistic effect on alkaloid accumulation was observed in C. roseus cell cultures when treated with some combined elicitors of fungal preparations and

Effect of nitric oxide on catharanthine production and growth of Catharanthus roseus suspension cells.

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Sodium nitroprusside (SNP) was used as the donor of nitric oxide (NO) to investigate its effect on catharanthine synthesis and the growth of Catharanthus roseus suspension cells. The results showed that SNP at high concentrations (10.0 and 20.0 mmol/L) stimulated catharanthine formation of C. roseus

[Distribution and accumulation of vindoline, catharanthine and vinblastine in Catharanthus roseus cultivated in China].

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OBJECTIVE The content of vindoline, catharanthine and vinblastine in the root, stem, leaf, flower and fruit of Catharanthus roseus at various developmental stages were determined, and the biomass allocation was also determined to find the best harvest time. METHODS The content of vindoline,

Elicitor-induced nitric oxide burst is essential for triggering catharanthine synthesis in Catharanthus roseus suspension cells.

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Elicitor prepared from the cell walls of Penicillium citrinum induced multiple responses in Catharanthus roseus suspension cells, including rapid generation of nitric oxide (NO), sequentially followed by enhancement of catharanthine production by C. roseus cells. Elicitor-induced catharanthine

Induction of catharanthine synthesis and stimulation of major indole alkaloids production by Catharanthus roseus cells under non-growth-altering treatment with Pythium vexans extracts.

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A Catharanthus roseus cell line was selected that synthesised catharanthine exclusively under elicitation.From the first day of culture, treatment with very low concentrations of a Pythium extract did not alter the growth of the suspension but, within 24 hours, induced the synthesis of catharanthine

Transcriptional response of the catharanthine biosynthesis pathway to methyl jasmonate/nitric oxide elicitation in Catharanthus roseus hairy root culture.

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Jasmonates and nitric oxide (NO) play important roles in the regulation of the signaling network leading to the biosynthesis of plant secondary metabolites. In this work, we explore the effect of constitutive overexpression of CrORCA3 (octadecanoid-responsive Catharanthus AP2/ERF domain), methyl

Simultaneous determination of vincristine, vinblastine, catharanthine, and vindoline in leaves of catharanthus roseus by high-performance liquid chromatography.

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A simple reversed-phase liquid chromatographic method is developed for the simultaneous quantitation of the anticancerous drugs vincristine, vinblastine, and their precursors catharanthine and vindoline using a Merck Chromolith Performance reversed-phase high-performance liquid chromatography

Increased synthesis of ajmalicine and catharanthine by cell suspension cultures of Catharanthus roseus in response to fungal culture-filtrates.

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The ammonium sulfate-precipitated fraction from mycelia and culture-filtrates and the crude, cell-free culture filtrates from the growth medium of the fungi Chrysosporium palmorum, Eurotium rubrum, Micromucor isabellina, and Pythium aphanidermatum when aseptically added to cell suspensions of

Screening 64 cultivars Catharanthus roseus for the production of vindoline, catharanthine, and serpentine.

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The leaves of Catharanthus roseus (L.) G. Don. are a valuable source of the terpenoid indole alkaloid (TIA) anticancer drugs, vinblastine and vincristine. In particular, the precursor molecules vindoline and catharanthine are harvested from leaves and used for the semisynthetic production of

Screening and kinetic studies of catharanthine and ajmalicine accumulation and their correlation with growth biomass in Catharanthus roseus hairy roots.

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Context Catharanthus roseus (L.) G. Don (Apocynaceae) is still one of the most important sources of terpene indole alkaloids including anticancer and hypertensive drugs as vincristine and vinblastine. These final compounds have complex pathway and many enzymes are involved in their biosynthesis.

A novel terpenoid indole alkaloid derived from catharanthine via biotransformation by suspension-cultured cells of Catharanthus roseus.

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OBJECTIVE Although catharanthine (1) is well known as a biosynthetic precursor of the anticancer alkaloid, vinblastine, its alternative metabolic pathways are unclear. RESULTS Biotransformation of 1 by suspension-cultured cells of Catharanthus roseus gave a new oxidative-cleavage product (2). The

Soybean transcription factor GmMYBZ2 represses catharanthine biosynthesis in hairy roots of Catharanthus roseus.

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Catharanthus roseus (L.) G. Don is a plant species known for its production of a variety of terpenoid indole alkaloids, many of which have pharmacological activities. Production of catharanthine in cell cultures or in hairy roots established by transformation with Agrobacterium rhizogenes is of

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