sideroxylonal a/eucalipt

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Genetic and environmental contributions to variation and population divergence in a broad-spectrum foliar defence of Eucalyptus tricarpa.

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OBJECTIVE Both environmental and genetic effects contribute to phenotypic variation within and among populations. Genetic differentiation of quantitative traits among populations has been shown in many species, yet it can also be accompanied by other genetic changes, such as divergence in phenotypic

Sideroxylonal C, a new inhibitor of human plasminogen activator inhibitor type-1, from the flowers of Eucalyptus albens.

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Sideroxylonal C (3), a new phloroglucinol dimer, was isolated from the flowers of Eucalyptus albens through bioassay-guided fractionation. The structure elucidation was based on 1D and 2D NMR experiments, MS analysis, and comparison with sideroxylonals A (1) and B (2). Sideroxylonal C inhibited

Novel detection of formylated phloroglucinol compounds (FPCs) in the wound wood of Eucalyptus globulus and E. nitens.

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This study characterized the chemical responses of Eucalyptus globulus and Eucalyptus nitens to artificial inoculation with a basidiomycete decay fungus. Nine-year-old trees responded to mechanical wounding or inoculation with the decay fungus by producing new wound wood characterized by the

Qualitative and semi-quantitative analysis of phenolics in Eucalyptus globulus leaves by high-performance liquid chromatography coupled with diode array detection and electrospray ionisation mass spectrometry.

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BACKGROUND Eucalyptus species are widely cultivated in Mediterranean regions. Moreover, plants of this family have been utilized for medicinal purposes. A number of studies have been devoted to the identification of eucalypt phenolics, all of them have focused on specific families of compounds, and

Antibacterial sideroxylonals and loxophlebal A from Eucalyptus loxophleba foliage.

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Loxophlebal A, a new antibacterial formylated phloroglucinol was isolated from the mother liquor obtained after separation of sideroxylonals from the chloroform-methanol extract of leaves of Eucalyptus loxophleba ssp lissophloia. The structure of loxophlebal A was determined to be 3-desformyl

Quantification of sideroxylonals in Eucalyptus foliage by high-performance liquid chromatography.

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This paper describes the extraction and quantification of sideroxylonals, a group of formylated phloroglucinol compounds found in the foliage of some eucalypt species. Samples of dry, ground foliage were Soxhlet-extracted with light petroleum spirit:acetone (4:1) and the resultant extract analysed

Structure-Activity Relationship of Phloroglucinol Compounds from Eucalyptus as Marine Antifoulants.

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Environmental pollution has resulted in the use of organo-tin and organo-copper compounds as antifouling agents being prohibited. Non-toxic natural products are considered to be environmentally friendly antifouling agents. Several phloroglucinol compounds isolated from three species of Eucalyptus

Jensenone: biological reactivity of a marsupial antifeedant from Eucalyptus.

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The resistance of Eucalyptus to browsing mammals has been related to the level and type of formylated phloroglucinol compounds (FPCs) present in the leaf. The antifeedant activity of FPCs appears to depend on their aldehyde groups, but little else is known of their mode of action. We have sought to

The rapid determination of sideroxylonals in Eucalyptus foliage by extraction with sonication followed by HPLC.

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A rapid method is described for the quantification of sideroxylonals, a group of formylated phloroglucinol compounds found in some eucalypts. Samples of dry, ground foliage were extracted by sonication with 20% methanol in acetonitrile, 7% water in acetonitrile or 40% water in acetonitrile and the

Chemical variation in a dominant tree species: population divergence, selection and genetic stability across environments.

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Understanding among and within population genetic variation of ecologically important plant traits provides insight into the potential evolutionary processes affecting those traits. The strength and consistency of selection driving variability in traits would be affected by plasticity in differences

Quantitative trait loci for key defensive compounds affecting herbivory of eucalypts in Australia.

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* Formylated phloroglucinols (FPCs) are key defensive compounds that influence herbivory by mammals and arthropods in eucalypts. However, the genetic architecture underlying variation in their levels remains poorly understood. * Quantitative trait loci (QTL) analysis for the concentrations of two

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