brugmansia versicolor/skopolamin

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Effect of ontogeny on the content of the hallucinogenic alkaloids atropine and scopolamine in the different organs of some Solanaceae plants

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The content of atropine and scopolamine is known to vary with ontogeny and plant organs selected which makes it necessary to define the optimal stage for harvesting of each plant organ. The present study aims at investigating the effect of ontogeny on the accumulation of atropine and scopolamine in

Methyl jasmonate increases the tropane alkaloid scopolamine and reduces natural herbivory in Brugmansia suaveolens: is scopolamine responsible for plant resistance?

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The tropane alkaloid (TA) scopolamine is suggested to protect Brugmansia suaveolens (Solanaceae) against herbivorous insects. To test this prediction in a natural environment, scopolamine was induced by methyl jasmonate (MJ) in potted plants which were left 10 days in the field. MJ-treated plants

Scopolamine in Brugmansia suaveolens (Solanaceae): defense, allocation, costs, and induced response.

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Brugmansia suaveolens (Solanaceae) contains tropane alkaloids (TAs), which can act as chemical defenses. Selective pressures might modulate the allocation of alkaloids within the plant, as postulated by optimal-defense theory. By tracing scopolamine, the most abundant TA in this species, we found

[Cloning and expression of the key enzyme hyoscyamine 6 beta-hydroxylase gene (DaH6H) in scopolamine biosynthesis of Datura arborea].

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Hyoscyamine 6 beta-hydroxylase (H6H) is the last rate-limiting enzyme directly catalyzing the formation of scopolamine in tropane alkaloids (TAs) biosynthesis pathway. It is the primary target gene in the genetic modification of TAs metabolic pathway. Full-length cDNA and gDNA sequences of a novel

Determination of the enantiomeric purity of scopolamine isolated from plant extract using achiral/chiral coupled column chromatography.

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The optical purity of scopolamine derived from Datura sanguinea was determined using coupled column chromatography. A C18 column was used to separate scopolamine from the additional alkaloids and other biological material present in the vegetal extract. The C18 column was coupled through a six-port

Isolation, expression and biochemical characterization of recombinant hyoscyamine-6β-hydroxylase from Brugmansia sanguinea - tuning the scopolamine production.

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Hyoscyamine-6β-hydroxylase (H6H, EC 1.14.11.11) is a plant enzyme that catalyses the last two steps in the biosynthesis of the anticholinergic drug scopolamine, i.e. the hydroxylation of hyoscyamine to 6β-hydroxyhyoscyamine (anisodamine) and subsequent oxidative ring-closure to the 6,7-β-epoxide. A

Protein and alkaloid patterns of the floral nectar in some solanaceous species.

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The family Solanaceae includes several melliferous plants, which tend to produce copious amounts of nectar. Floral nectar is a chemically complex aqueous solution, dominated by sugars, but minor components such as amino acids, proteins, flavonoids and alkaloids are present as well. This study aimed

[Mydriasis caused by plant contact].

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Uni- or bilateral dilatation of pupils that are not reactive to light and lack miosis in response to 1% pilocarpine may be caused by contact with plants containing alkaloids such as scopolamine and atropine. Other causes of a non-light-reactive dilated pupil, such as Adie's tonic pupil, third nerve

Functional characterisation of a tropine-forming reductase gene from Brugmansia arborea, a woody plant species producing tropane alkaloids.

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Brugmansia arborea is a woody plant species that produces tropane alkaloids (TAs). The gene encoding tropine-forming reductase or tropinone reductase I (BaTRI) in this plant species was functionally characterised. The full-length cDNA of BaTRI encoded a 272-amino-acid polypeptide that was highly

Hairy roots of Brugmansia candida that grow without agitation: biotechnological implications.

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Hairy roots of Brugmansia candida that grew without agitation were obtained. Kinetics of growth and production of the tropane alkaloids scopolamine and hyoscyamine, with and without agitation, were studied. The exponential growth rate was higher in the roots that were exposed to shaking (0.13 d(-1))

Tropane alkaloid production in transformed root cultures of brugmansia Candida.

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Transformed root cultures of BRUGMANSIA CANDIDA were established by infection with AGROBACTERIUM RHIZOGENES LBA 9402. Several clones with different growth index and tropane alkaloid pattern and content were obtained and two were examined in depth. The alkaloid content and pattern changed during the

Chemical Compounds, Pharmacological and Toxicological Activity of Brugmansia suaveolens: A Review

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This study investigates updated information in different search engines on the distribution, phytochemistry, pharmacology, and toxicology of Brugmansia suaveolens (Solanaceae) using the extracts or chemical compounds at present. This plant has been used in traditional medicine in different

Occurrence of cadaverine in hairy roots of Brugmansia candida.

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The polyamine, cadaverine, was detected in transformed root cultures of Brugmansia candida (syn. Datura candida), a Solanaceae which produces the tropane alkaloids scopolamine and hyoscyamine. To the best of our knowledge, this is the first time that the existence of this uncommon polyamine has been

How polyamine synthesis inhibitors and cinnamic acid affect tropane alkaloid production.

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Hairy roots of Brugmansia candida produce the tropane alkaloids scopolamine and hyoscyamine. In an attempt to divert the carbon flux from competing pathways and thus enhance productivity, the polyamine biosynthesis inhibitors cyclohexylamine (CHA) and methylglyoxal-bis-guanylhydrazone (MGBG) and the

Anisodamine production from natural sources: seedlings and hairy root cultures of Argentinean and Colombian Brugmansia candida plants.

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The tropane alkaloid anisodamine ( 2) is obtained by 6 beta-hydroxylation of hyoscyamine ( 1). The application of this alkaloid in medicine is gaining attention due to the wide range of therapeutic applications described in addition to its anticholinergic activity. In this work, the production of

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