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broad bean/kalij

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Stranica 1 iz 90 rezultatima
Salt stress in plants impacts apoplastic ion activities and cytosolic ionic homeostasis. The ameliorating effects exerted by calcium or potassium on compartmentation of ions in leaves under salinity are not fully understood. To clarify how calcium or potassium supply could ameliorate ion homeostasis

Role of Potassium in Stomatal Opening in the Leaf of Vicia faba.

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With isolated epidermal strips of Vicia faba, the intensity of potassium-staining in the guard cells of stomata was calibrated against the uptake of radioactively labeled potassium. By using this calibration, the quantity of potassium that had accumulated in the guard cells, as stomata of leaves of

The Effect of Potassium on the Fixation of Molecular Nitrogen by Root Nodules of Vicia faba.

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The effect of potassium supply of Vicia faba on the fixation of molecular nitrogen by root nodules was studied by using (15)N-labeled molecular nitrogen. Plants well supplied with potassium showed higher contents of (15)N in the soluble amino fraction and in the protein fraction of various plant
Leaf epidermal strips of Vicia faba were floated on 10 millimolar KCl at temperatures of 10 to 45 C for several time periods in the dark. For the duration of the experiment, a jet of water-saturated, CO(2)-free air was passed over the strips. The width of the stomatal aperture was measured

[Study on teratogenic effect of potassium dichromate on Vicia faba root tip cells].

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We studied the aberrant effects of different concentrations of potassium dichromate on Vicia faba root tip cells. The micronucleus and chromosome aberration assay was conducted to determine the micronucleus rate and chromosome aberration rate of Vicia faba root tip cells induced by potassium

Isolation of a potassium-selective ion channel from the plasma membrane of the broad bean Vicia faba L.

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Potassium ions are essential for plant nutrition and play an important role in osmoregulation and plant movement. Recent patch clamp investigations and molecular analysis have identified voltage-dependent potassium channels responsible for translocation of this ion across plant membranes. In order

Effect of calcium and potassium on antioxidant system of Vicia faba L. Under cadmium stress.

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Cadmium (Cd) in soil poses a major threat to plant growth and productivity. In the present experiment, we studied the effect of calcium (Ca(2+)) and/or potassium (K(+)) on the antioxidant system, accumulation of proline (Pro), malondialdehyde (MDA), and content of photosynthetic pigments, cadmium
Electron probe microanalysis for K and Cl and enzymic determination of malate were performed on epidermal strips of Vicia faba L. which had been incubated with 0.1 equivalent of K(+) per liter in the absence or presence of Cl(-). In the absence of Cl(-), iminodiacetate, a presumed impermeant

Relationship of Temperature to Stomatal Aperture and Potassium Accumulation in Guard Cells of Vicia faba.

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Epidermal strips of Vicia faba were floated on 10 millimolar KCl at various temperatures and for several time periods. The diameter of the stomatal aperture was determined microscopically and K(+) content was estimated and expressed as the per cent of the guard cell stained. Stomatal opening was
The stimulation by KCl of stomatal opening in isolated epidermal strips of Vicia faba was examined. In dark + normal air the opening response was maximal at 100 mm KCl while in light + CO(2)-free air it was maximal at about 10 mm KCl. CO(2)-free air was more influential than light in reducing the
Phosphoenolpyruvate carboxylase (PEPCase; EC 4.1.1.31) activity was found to be modulated by light and darkness when measured in the presence of K(+), which had been added to induce swelling of guard-cell protoplasts (GCPs) from Vicia faba L., whereas no modulation was detected in the absence of

Trafficking of the plant potassium inward rectifier KAT1 in guard cell protoplasts of Vicia faba.

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Trafficking of K+ inward (Kin+) rectifying channels was analyzed in guard cells of Vicia faba transfected with the Kin+ rectifier from Arabidopsis thaliana KAT1 fused to the green fluorescent protein (GFP). Confocal images and whole-cell patch-clamp measurements confirmed the incorporation of active
To analyze the differences between high- and low-accumulation plants in cesium (Cs) uptake and its related mechanism, Brassica juncea (a hyperaccumulation plant for Cs) and Vicia faba (a low-accumulation plant for Cs) were selected as comparative experimental materials. The contributions to Cs
Mechanosensitive ion channels in the plasma membrane of Vicia faba guard cell protoplasts were studied by use of the patch clamp technique. Stretch-activated (SA) channels in outside-out patches were analyzed for channel conductance, kinetics and ion selectivity. We found three distinct SA channels,

The alkaline comet test on plant cells: a new genotoxicity test for DNA strand breaks in Vicia faba root cells.

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The alkaline comet assay (single cell gel electrophoresis assay) is a sensitive method for the detection of DNA damage. This paper describes the first application of this assay to plant cells for genotoxicological assessment. Germinating Vicia faba (field bean) seedlings were kept in water with
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