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9 rezultate
The genotype dependent presence of pyrrolizidine alkaloids as tertiary amine in Jacobaea vulgaris.
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Secondary metabolites such as pyrrolizidine alkaloids (PAs) play a crucial part in plant defense. PAs can occur in plants in two forms: tertiary amine (free base) and N-oxide. PA extraction and detection are of great importance for the understanding of the role of PAs as plant defense compounds, as
Differential tissue distribution of metabolites in Jacobaea vulgaris, Jacobaea aquatica and their crosses.
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Plants are attacked by many different herbivores. Some will consume whole leaves or roots, while others will attack specific types of tissue. Thus, insight into the metabolite profiles of different types of leaf tissues is necessary to understand plant resistance against herbivores. Jacobaea
The relationship between structurally different pyrrolizidine alkaloids and western flower thrips resistance in F(2) hybrids of Jacobaea vulgaris and Jacobaea aquatica.
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Segregating plant hybrids often have more ecological and molecular variability compared to parental species, and are therefore useful for studying relationships between different traits, and the adaptive significance of trait variation. Hybrid systems have been used to study the relationship between
Determination of pyrrolizidine alkaloids in honey from selected sites by solid phase extraction and HPLC-MS.
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A method was developed for the determination in honey of the Ragwort (Senecio jacobaea) derived pyrrolizidine alkaloids jacoline, jacozine, jacobine, seneciphylline and senecionine, combining solid-phase extraction with high performance liquid chromatography and atmospheric pressure chemical
NMR metabolomics of thrips (Frankliniella occidentalis) resistance in Senecio hybrids.
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Western flower thrips (Frankliniella occidentalis) has become a key insect pest of agricultural and horticultural crops worldwide. Little is known about host plant resistance to thrips. In this study, we investigated thrips resistance in F (2) hybrids of Senecio jacobaea and Senecio aquaticus. We
Pyrrolizidine alkaloids: their occurrence in honey from tansy ragwort (Senecio jacobaea L.)
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The hepatotoxic alkaloids known to occur in tansy ragwort (Senecio jacobaea L.) are also present in honey produced from the nectar of this species. These alkaloids, which inclued senecionine, seneciphylline, jacoline, jaconine, jacobine, and jacozine, are potentially carcinogenic, mutagenic, and
Pyrrolizidine alkaloid level in Senecio bicolor (Wilid.) Tod, ssp. cineraria (DC.) from middle Europe.
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From Senecio bicolor, ssp. cineraria, cultivated in middle Europe, seven pyrrolizidine alkaloids (PA) were isolated and their structures elucidated by spectroscopical methods. Besides the already known senecionine, integerrimine, seneciphylline, jacobine, jacoline and jaconine the jacobine-acetate
[Pyrrolizidine alkaloids of Senecio cannabifolius var. integrilifolius].
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OBJECTIVE
To study the pyrrolizidine alkaloids of Senecio cannabifolius var. integrilifolius.
METHODS
Various chromatographic methods were used for the isolation and purification of chemical constitutents of the plant and their structures were elucidated on the basis of spectral
Pyrrolizidine alkaloid profiles of the Senecio cineraria group (Asteraceae).
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Alkaloid profiles of five Senecio species (Asteraceae), including S. ambiguus subsp. ambiguus, S. ambiguus subsp. nebrodensis, S. gibbosus subsp. bicolor, S. gibbosus subsp. gibbosus, and S. gibbosus subsp. cineraria, were studied. Eleven pyrrolizidine alkaloids were identified and their content was
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