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betula/carbohydrate
Ο σύνδεσμος αποθηκεύεται στο πρόχειρο
Σελίδα 1 από 54 Αποτελέσματα
Carbohydrate concentrations and freezing stress resistance of silver birch buds grown under elevated temperature and ozone.
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The effects of slightly elevated temperature (+0.8 °C), ozone (O3) concentration (1.3 × ambient O3 concentration) and their combination on over-wintering buds of Betula pendula Roth were studied after two growing seasons of exposure in the field. Carbohydrate concentrations, freezing stress
Non-Structural Carbohydrate Storage Strategy Explains the Spatial Distribution of Treeline Species.
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Environmental factors that drive carbon storage are often used as an explanation for alpine treeline formation. However, different tree species respond differently to environmental changes, which challenges our understanding of treeline formation and shifts. Therefore, we selected Picea
[Spatial variation of non-structural carbohydrates in Betula platyphylla and Tilia amurensis stems].
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Taking the two diffuse-porous tree species Betula platyphylla and Tilia amurensis in a temperate forest in Northeast China as test objects, this paper studied the spatial variation of the non-structural carbohydrates (NSC) concentrations in the stem xylem after leaf-fall. For the two tree species,
Seasonal variation in biomass and carbohydrate partitioning of understory sugar maple (Acer saccharum) and yellow birch (Betula alleghaniensis) seedlings.
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We investigated seasonal patterns of biomass and carbohydrate partitioning in relation to shoot growth phenology in two age classes of sugar maple (Acer saccharum Marsh.) and yellow birch (Betula alleghaniensis Britt.) seedlings growing in the understory of a partially harvested forest. The high
Cross-reactive carbohydrate determinant interference in cellulose-based IgE allergy tests utilizing recombinant allergen components.
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Drought and shade deplete nonstructural carbohydrate reserves in seedlings of five temperate tree species.
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Plants that store nonstructural carbohydrates (NSC) may rely on carbon reserves to survive carbon-limiting stress, assuming that reserves can be mobilized. We asked whether carbon reserves decrease in resource stressed seedlings, and if NSC allocation is related to species' relative stress
Variation among and within mountain birch trees in foliage phenols, carbohydrates, and amino acids, and in growth ofEpirrita autumnata larvae.
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Leaf quality of the mountain birch (Betula pubescens ssp.tortuosa) for herbivores was studied at several hierarchical levels: among trees, among ramets within trees, among branches within ramets, and among short shoots within branches. The experimental units at each level were chosen randomly. The
Osmolality and Non-Structural Carbohydrate Composition in the Secondary Phloem of Trees across a Latitudinal Gradient in Europe.
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Phloem osmolality and its components are involved in basic cell metabolism, cell growth, and in various physiological processes including the ability of living cells to withstand drought and frost. Osmolality and sugar composition responses to environmental stresses have been extensively studied for
Quantification of lignin-carbohydrate linkages with high-resolution NMR spectroscopy.
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A quantitative approach to characterize lignin-carbohydrate complex (LCC) linkages using a combination of quantitative ¹³C NMR and HSQC 2D NMR techniques has been developed. Crude milled wood lignin (MWLc), LCC extracted from MWLc with acetic acid (LCC-AcOH) and cellulolytic enzyme lignin (CEL)
Silver birch (Betula pendula) plants with aux and rol genes show consistent changes in morphology, xylem structure and chemistry.
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The effects of Agrobacterium pRiA4 rol and aux genes, controlled by their endogenous promoters, on tree growth and wood anatomy and chemistry were studied in 5- and 7-year-old silver birch (Betula pendula Roth) plants. Southern hybridization confirmed the following rol and aux gene combinations:
Effects of long-term, elevated ultraviolet-B radiation on phytochemicals in the bark of silver birch (Betula pendula).
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Long-term outdoor experiments were conducted to investigate the effects of elevated ultraviolet-B (UV-B, 280-320 nm) radiation on secondary metabolites (phenolics and terpenoids) and the main soluble sugars (sucrose, raffinose and glucose) in the bark of silver birch (Betula pendula Roth) saplings.
Long-term photosynthetic acclimation to increased atmospheric CO(2) concentration in young birch (Betula pendula) trees.
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To study the long-term response of photosynthesis to elevated atmospheric CO(2) concentration in silver birch (Betula pendula Roth.), 18 trees were grown in the field in open-top chambers supplied with 350 or 700 &mgr;mol mol(-1) CO(2) for four consecutive growing seasons. Maximum photosynthetic
Growth and nutrition of small Betula pendula plants at different relative addition rates of manganese.
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In a series of experiments, growth of small birch plants (Betula pendula Roth) was controlled by the relative addition rate of manganese, R(Mn) (day(-1)). The R(Mn) treatments were 0.05, 0.10, 0.15 and 0.20 day(-1) with free access to all other nutrients. In an additional treatment, FA, there was
Comparative studies on tree-pollen allergens. I. Isolation and partial characterization of a major allergen from birch pollen (Betula verrucosa).
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A major allergen from birch pollen (Betula verrucosa) was isolated by a combination of gel permeation chromatography and preparative isoelectric focusing, and was found adequate for further immunological and chemical characterization. The crude aqueous pollen extract was eluted in 6 UV-absorbance
Effect of Betula pendula Leaf Extract on α-Glucosidase and Glutathione Level in Glucose-Induced Oxidative Stress.
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B. pendula leaf is a common ingredient in traditional herbal combinations for treatment of diabetes in southeastern Europe. Present study investigated B. pendula ethanolic and aqueous extract as inhibitors of carbohydrate hydrolyzing enzymes, as well as their ability to restore glutathione
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