Vicia Faba
Mostrando 13-24 de 199 artigos, teses e dissertações.
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13. Role of Potassium in Stomatal Opening in the Leaf of Vicia faba
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 Vicia open in the light, was estimated. Results support the
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14. Isolation of a Protein Interacting with Vfphot1a in Guard Cells of Vicia faba1
A recent study has demonstrated that phototropins act as blue light receptors in stomatal guard cells. However, the downstream components responsible for phototropin signaling are largely unknown. In this study, using a yeast two-hybrid system, we isolated a Vicia faba protein that has a high similarity to dynein light chain in the C terminus, which interact
American Society of Plant Biologists.
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15. Promotion of Stomatal Opening by Indoleacetic Acid and Ethrel in Epidermal Strips of Vicia faba L
Indole-3-acetic acid (IAA), at concentrations of 0.01 to 1.0 millimolar, and ethephon (0.3% v/v Ethrel) promote stomatal opening when applied to epidermal peels of Vicia faba L. in light or dark. The effect of ethylene is seen by 30 minutes and maximal opening (over two times that of untreated controls) occurs after only 60 to 90 minutes in the light. Stomat
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16. Kaempferol 3-O-Galactoside, 7-O-Rhamnoside is the Major Green Fluorescing Compound in the Epidermis of Vicia faba1
The vacuoles of lower epidermal strips from Vicia faba exhibit an intrinsic green fluorescence when incubated in alkaline buffers. Using an alkaline-induced absorbance change as a spectrophotometric assay, the major pigment responsible for this fluorescence was isolated and identified as the flavonoid: kaempferol 3-O-galactoside, 7-O-rhamnoside. The aqueous
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17. Heritability and Variability in Ribosomal RNA Genes of Vicia faba
We have compared the restriction patterns and copy numbers of ribosomal RNA genes (rDNA) between and within individuals of Vicia faba . While the EcoRI blot-hybridization patterns changed only after one to two generations, copy number changes were found among different tissues of the same plant. Copy number differences among individuals in the population wer
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18. High Levels of Malic Enzyme Activities in Vicia faba L. Epidermal Tissue 1
Specific activities of NADP-malic enzyme, NAD-malic enzyme, phosphoenolpyruvate carboxykinase and pyruvate, orthophosphate dikinase in various cells of Vicia faba L. leaflets were determined. Expressed on dry weight, chlorophyll or protein basis, the averages for NADP- and NAD-malic enzyme specific activities were higher in guard cells than in photosynthetic
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19. Effect of Photoperiod on Stomatal Opening in Vicia faba1
Stomatal apertures in darkness and subsequent average opening rates in light were measured in Vicia faba leaf discs throughout the nyctoperiods for plants grown on three light:dark cycles (8:16, 12:12, and 16:8). The time course of opening in darkness depended on the specific light:dark cycle with the maximum aperture always occurring at the time the lights
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20. Failure to Detect Cyclic 3′, 5′-Adenosine Monophosphate in Healthy and Crown Gall Tumorous Tissues of Vicia faba1
Attempts were made to provide proof for the occurrence of cyclic 3′,5′-adenosine monophosphate in healthy and crown gall tissues of Vicia faba. Although our purified extracts gave positive readings in the Gilman binding assay for cyclic AMP, they were not digested by a specific cyclic 3′,5′-adenosine monophosphate phosphodiesterase from beef heart. T
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21. Effects of Substituted Pyridazinones (San 6706, San 9774, San 9785) on Glycerolipids and Their Associated Fatty Acids in the Leaves of Vicia faba and Hordeum vulgare1
The fatty acids of the major glycerolipids from the leaves of Vicia faba and Hordeum vulgare plants treated with three different concentrations of pyridazinone derivatives were analyzed. These compounds showed multiple effects on the levels of lipids and pigments. At low concentrations, the primary effect of San 9785 was on the level of linolenic acid (18:3)
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22. Legumin Synthesis in Developing Cotyledons of Vicia faba L. 1
The synthesis of legumin in developing cotyledons of Vicia faba L. has been examined as a potential system for approaching the problem of differential gene expression. The pattern of legumin synthesis was determined during the growth of the cotyledon by microcomplement fixation which provided a sensitive and specific assay for legumin in the presence of vici
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23. The Isolation of Proplastids from Roots of Vicia faba1
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24. Cutin Biosynthesis in Vicia faba Leaves: Effect of Age 1