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Effect of bicarbonate on uptake and translocation of Fe-59 in two grapevine rootstocks differing in their resistance to Fe deficiency chlorosis
(Bundesanstalt Zuchtungs Forschung Kulturpflanzen, Siebeldingen, 2000)
In order to study the effect of high bicarbonate concentration in the root medium on root Fe-III reduction, Fe uptake and its translocation to the leaves, two rootstocks (Vitis riparia Michx., susceptible, and 41 B (Vitis ...
Effect of bicarbonate and Fe supply on Fe nutrition of grapevine
(Taylor & Francis Inc, Philadelphia, 2000)
Grapevine grafts (Yi:lis vinifera L. cv. Riesling on rootstocks of Vitis sp. L. cv. 5BB) were grown hydroponically in complete nutrient solution (control), Fe-free nutrient solution and complete nutrient solution with added ...
Changes in peroxidase activity and isoenzymes in spruce needles after exposure to different concentrations of cadmium
(Pergamon-Elsevier Science Ltd, Oxford, 2000)
We studied the guaiacol peroxidase activity, isoenzyme pattern and metal content in the needles of 2-year-old spruce grown on soils supplemented with cadmium concentrations from 1 to 21 mg kg(-1). Following exposure to ...
Visualization of artificial lignin supramolecular structures
(Hindawi-Wiley, 2000)
In this paper we are presenting the results of our environmental scanning electron microscopy (ESEM) investigation of the lignin model compound-enzymatically polymerized coniferyl alcohol, also known as dehydrogenate polymer ...
A comparative study of enzymatically and photochemically polymerized artificial lignin supramolecular structures using environmental scanning electron microscopy
(Academic Press Inc Elsevier Science, San Diego, 2000)
Environmental scanning electron microscopy images of the self-assembled structures of enzymatically (DHP) and photochemically polymerized (PCP) artificial lignin are herein presented. Differences in the structural organization ...
Effects of xanthine derivatives on electroretinographic responsiveness
(Elsevier, Amsterdam, 2000)
In view of the use of synthetic propentofylline (PPF) as a protective agent in brain ischemia, its possible side effects on vision capacities have been explored by electroretinography in comparative experiments with ...
Oxygen and light accelerate recovery from SO2-induced inhibition of leaf photosynthesis and from cytoplasmic acidification
(Elsevier GmbH, 2000)
Leaves of several plant species were illuminated either in air or in a gas atmosphere with reduced oxygen content, and photosynthesis and transpiration were recorded after brief exposure to high concentrations of SO2. ...
Evaluation of kinetic data for crystallization of TiO2 prepared by hydrolysis method
(Springer, Dordrecht, 2000)
The formation of TiO2 prepared by hydrolysis method was presented. Thermodynamics and kinetics of anatase crystallization reaction were investigated. Differential method of kinetic data evaluation in non-isothermal conditions ...
Peroxide processing in photosynthesis: antioxidant coupling and redox signalling
(Royal Soc, London, 2000)
Photosynthesis has a high capacity for production of hydrogen peroxide (H2O2), but the intracellular levels of this relatively weak oxidant are controlled by the antioxidant system, comprising a network of enzymatic and ...
Fractal analysis of STM images of lignin polymer obtained by in vitro synthesis
(Slovak Academy of Sciences, 2000)
Lignin, the structural polymer of the plant cell walls, is produced by free radical polymerization of phenolic alcohols, catalyzed by different peroxidases. The mechanism and the structural organization of lignin in the ...