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Página 1 a partir de 89 resultados
Occurrence and properties of polygalacturonase in Avena and other plants.
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Polygalacturonase activity has been detected in a number of plants including seedlings of Phaseolus vulgaris, Zea mays, Avena sativa, and Pisum sativum. Particular emphasis was placed on characterizing the enzyme from oat seedlings. This enzyme is solubilized by 0.2 m NaCl, and its activity is
IAA transport during the phototropic responses of intact Zea and Avena coleoptiles.
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Transport of indolyl-3-acetic acid (IAA) was studied during the phototropic responses of intact shoots and detached coleoptiles of Zea mays L. and Avena sativa L. The use of a high specific activity [5-(3)H]IAA and glass micropipettes enabled asymmetric application of the IAA to be made to
Concentrations of Indole-3-acetic Acid and Its Esters in Avena and Zea.
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An isotope-dilution method has been developed for the assay of free indole-3-acetic acid and ester indole-3-acetic acid as measured by indole-3-acetic acid liberated by mild alkaline hydrolysis. Application of this method to seedlings of Avena sativa and Zea mays indicates the upper limit of free
Complex characterization of oat (Avena sativa L.) lines obtained by wide crossing with maize (Zea mays L.).
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UNASSIGNED
The oat × maize addition (OMA) lines are used for mapping of the maize genome, the studies of centromere-specific histone (CENH3), gene expression, meiotic chromosome behavior and also for introducing maize C4 photosynthetic system to oat. The aim of our study was the identification and
The outer epidermis of Avena and maize coleoptiles is not a unique target for auxin in elongation growth.
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A controversy exists as to whether or not the outer epidermis in coleoptiles is a unique target for auxin in elongation growth. The following evidence indicates that the outer epidermis is not the only auxin-responsive cell layer in either Avena sativa L. or Zea mays L. coleoptiles. Coleoptile
The outer epidermis of Avena and maize coleoptiles is not a unique target for auxin in elongation growth.
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A controversy exists as to whether or not the outer epidermis in coleoptiles is a unique target for auxin in elongation growth. The following evidence indicates that the outer epidermis is not the only auxin-responsive cell layer in either Avena sativa L. or Zea mays L. coleoptiles. Coleoptile
Comparative impact of genetically modified and non modified maize (Zea mays L.) on succeeding crop and associated weed.
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This research work documents the comparative impact of genetically modified (GM) (insect resistance) and non modified maize (Zea mays L.) on growth and germination of succeeding crop wheat (Triticum aestivum L.) and associated weed (Avena fatua L.). The aqueous extracts of both the GM and non-GM
The isolation of indole-3-acetyl-2-O-myo-inositol from Zea mays.
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The isolation and crystallization of an ester of myo-inositol and indole-3-acetic acid is described. The ester was extracted from mature corn (maize) kernels. On the basis of data for solubility in acetone, acetone-water mixtures and water, chromatographic data, and data on acyl migration the ester,
Auxin Transport in Zea mays Coleoptiles II. Influence of Light on the Transport of Indoleacetic Acid-2-C.
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The effect of bilateral irradiation with white light (1000 Meter Candle Sec) on the basipetal transport of auxin has been investigated. Illumination of either the intact shoot or the excised coleoptile tip of the Zea seedling, decreased the amount of diffusible auxin obtained from the tip, and
Hydrolytic Activity and Substrate Specificity of an Endoglucanase from Zea mays Seedling Cell Walls.
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An endoglucanase was isolated from cell walls of Zea mays seedlings. Characterization of the hydrolytic activity of this glucanase using model substrates indicated a high specificity for molecules containing intramolecular (1-->3),(1-->4)-beta-d-glucosyl sequences. Substrates with
Correlation of Blue Light-Induced Phosphorylation to Phototropism in Zea mays L.
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The physiology of light-induced phototropic curvature has been studied extensively in coleoptiles of grasses, particularly in Avena and Zea mays L. In Z. mays L., we have found that, in addition to curvature, blue light also induces rapid phosphorylation of a 114-kD protein in the tips of
Partial purification of endo- and exo-β-D-glucanase enzymes from Zea mays L. seedlings and their involvement in cell-wall autohydrolysis.
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The proteins dissociated from isolated Zea seedling cell wall using high-ionic-strength salt solutions have been found to include a number of enzymes which appear to participate in autolytic reactions of the cell wall. These enzymes caused extensive degradation of enzymatically inactive cell wall,
Native phytochrome: immunoblot analysis of relative molecular mass and in-vitro proteolytic degradation for several plant species.
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The relative molecular mass (Mr) of the native phytochrome monomer from etiolated Cucurbita pepo L., Pisum sativum L., Secale cereale L. and Zea mays L. seedlings has been determined using immunoblotting to visualize the chromoprotein in crude extracts subjected to sodium dodecyl
4-amino-5-hexynoic Acid-a potent inhibitor of tetrapyrrole biosynthesis in plants.
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4-Amino-5-hexynoic acid, a suicide inactivator of the mammalian pyridoxal phosphate-dependent 4-aminobutyric acid:2-oxoglutaric acid aminotransferase, inhibits phytochrome and chlorophyll synthesis in developing oat (Avena sativa L.), corn (Zea mays L.), pea (Pisum sativum L.), and cucumber (Cucumis
Evidence against the occurrence of adenosine-3':5'-cyclic monophosphate in higher plants.
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Previous reports on the incorporation of [(14)C]adenine into adenosine-3':5'-cyclic monophosphate (cyclic AMP) in oat (Avena sativa L.) and maize (Zea mays L.) coleoptile sections, chick-pea (Cicer arietinum L.) embryos and barley (Hordeum vulgare L.) aleurone layers were reexamined. Separation of
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