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picein/picea abies
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Picein and piceol concentrations in Norway spruce.
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The concentrations of the glucoside picein and its aglucone piceol (4-hydroxy acetophenone) in the needles of Norway spruce (Picea abies (L.) Karsten) are considered indicators of plant stress. By use of two clones and a natural population of Norway spruce it was shown that the picein concentration
Biochemical response of Norway spruce (Picea abies (L.) Karst.) towards 14-month exposure to ozone and acid mist: part I--Effects on polyphenol and monoterpene metabolism.
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Three-year-old clonal Picea abies (L.) Karst. plants, grown either on a sandy (No. 1) or on a calcareous (No. 2) soil, were treated with ozone (100 microg m(-3) and peaks of up to 360 microg m(-3)) and acid mist (pH 3.0) over two vegetation periods. Needles of the current (1987) and previous (1986)
Natural UV-Screening Mechanisms of Norway Spruce (Picea abies [L.] Karst.) Needles.
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Abstract- Ultraviolet-light screening potential of Norway spruce (Picea abies [L.] Karst.) needles was investigated by UV-spectroscopic, microscopic, fluorescence spectroscopic techniques as well as by HPLC, mass spectrometry and NMR spectroscopy. Results showed four potential barriers of UV
Foliar Phenolic Compounds in Norway Spruce with Varying Susceptibility to Chrysomyxa rhododendri: Analyses of Seasonal and Infection-Induced Accumulation Patterns.
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Secondary phenolic metabolites are involved in plant responses to various biotic stress factors, and are apparently important for the defense against fungal pathogens. In this study, we investigated their role in defense against the rust Chrysomyxa rhododendri in Norway spruce. The fungal pathogen
Phenolics of mycorrhizas and non-mycorrhizal roots of Norway spruce.
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The occurrence and amount of soluble and insoluble phenolics in mycorrhizal and non-mycorrhizal roots of Picea abies (L.) Karst, were investigated, p-Hydroxybenzoic acid glucoside, picein, piceatannol and its glucoside, isorhapontin, catechin and ferulic acid could be identified by high-performance
Dry-air drying at room temperature - a practical pre-treatment method of tree leaves for quantitative analyses of phenolics?
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BACKGROUND
In ecological experiments, storage of plant material is often needed between harvesting and laboratory analyses when the number of samples is too large for immediate, fresh analyses. Thus, accuracy and comparability of the results call for pre-treatment methods where the chemical
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