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15 resultados
Stereospecific analysis of triglycerides of Glycine max, Glycine soya, Avena sativa and Avena sterilis strains.
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A rapid method for the stereospecific analysis of triglycerides based on enzymatic hydrolysis on thin layer plates was applied to a number of Glycine max, Glycine soya, Avena sativa and Avena sterilis strains. The percentage of each fatty acid on the sn-1-, sn-2- and sn-3-positions was linearly
Vitamin E levels in soybean (Glycine max (L.) Merr.) expressing a p-hydroxyphenylpyruvate gene from oat (Avena sativa L.).
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The enzyme p-hydroxyphenylpyruvate dioxygenase (HPPD) is ubiquitous in plants and functions in the tyrosine catabolic pathway, resulting in the formation of homogentisate. Homogentisate is the aromatic precursor of all plastoquinones and tocochromanols, including tocopherols and tocotrienols.
Biological Properties of d-Amino Acid Conjugates of 2,4-D.
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Some d-amino acid (glutamic acid, valine, or leucine) conjugates of 2,4-dichlorophenoxyacetic acid (2,4-D) at 10(-5) molar, stimulated elongation of Avena sativa L. var Mariner coleoptile sections and growth of soybean (Glycine max. L. var Amsoy) tissue as much as did the l-amino acid conjugates at
The Instron technique as a measure of immediate-past wall extensibility.
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The relationship between the plastic-extensibility values (PEx) obtained in the Instron technique and the growth parameter, wall extensibility (Φ) has been evaluated for Avena sativa L. coleoptile cell walls. The possibility that PEx is proportional to the growth rate rather than to Φ has been
Characterization of oat vicilin-like polypeptides.
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The 7S and 3S globulin fractions were extracted and characterized from Avena sativa L. seeds which showed similar solubility characteristics and holoprotein size to those of the vicilin fraction in legumes. These holoproteins were characterized by sodium dodecyl sulfate-polyacrylamide gel
Chloroplast Biogenesis 49 : Differences among Angiosperms in the Biosynthesis and Accumulation of Monovinyl and Divinyl Protochlorophyllide during Photoperiodic Greening.
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Various angiosperms differed in their monovinyl and divinyl protochlorophyllide biosynthetic capabilities during the dark and light phases of photoperiodic growth. Some plant species such as Cucumis sativus L., Brassica juncea (L.) Coss., Brassica kaber (DC.) Wheeler, and Portulaca oleracea L.
Formation of N-acetylglutamate by extracts of higher plants.
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The enzymic synthesis of N-acetylglutamate was studied in extracts of higher plant tissues, especially in sugar beet leaves (Beta vulgaris L.). Sugar beet leaves had an enzyme that transferred the acetyl group either from acetyl-CoA or from N(2)-acetylornithine to glutamate. The enzyme was so
Do some plant responses to cytokinins involve the cyanide-resistant respiratory pathway?
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A disengagement of the cyanide-resistant, alternative respiratory pathway in soybean (Glycine max (L.) Merr.) callus tissue was observed prior to the start of deoxyisoflavone production stimulated by addition of the cytokinin benzyladenine. To test whether this loss of alternativepathway activity
Evaluation of chromium phyto-toxicity, phyto-tolerance, and phyto-accumulation using biofuel plants for effective phytoremediation.
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Contamination of chromium signifies one of the major threats to soil system. Phytoremediation is a promising technique to reclaim metal-contaminated soil using plants which are capable to tolerate and accumulate heavy metals within in their tissues. The experiment reported in this article was
Lyophilized extracts from vegetable flours as valuable alternatives to purified oxygenases for the synthesis of oxylipins.
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In this work, the whole aqueous extracts of soybean flour and oat flour have been used as valuable alternatives to purified oxygenase enzymes for the preparation of oxylipins derived from (5Z,8Z,11Z,14Z,17Z)-eicosapentaenoic acid (EPA). The lipoxygenase activity in the aqueous extracts of soybean
Transformation of fulvic substances in the rhizosphere during phytoremediation of used motor oil.
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Changes in the chemical composition of fulvic acids in used oil-contaminated soils treated with different plant species and fertilization (fertilized, F; and nonfertilized, NF) were analyzed by Fourier-Transformed Infrared Spectroscopy (FTIR). Soil contaminated with 1.5% (w/w) used motor oil was
The myth of nitrogen fertilization for soil carbon sequestration.
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Intensive use of N fertilizers in modern agriculture is motivated by the economic value of high grain yields and is generally perceived to sequester soil organic C by increasing the input of crop residues. This perception is at odds with a century of soil organic C data reported herein for the
Phytase improves apparent total tract digestibility of phosphorus and calcium in piglets fed diets with adequate or reduced phosphorus content.
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The effect of a thermotolerant 6-phytase produced by Trichoderma reesei on performance and apparent total tract digestibility (ATTD) of P and Ca was evaluated in 192 weaned piglets (randomized block design; 16 replicates; 2 piglets each). Diets based on wheat (Triticum aestivum), barley (Hordeum
Residual soil nitrate content and profitability of five cropping systems in northwest Iowa.
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Many communities in the Midwestern United States obtain their drinking water from shallow alluvial wells that are vulnerable to contamination by NO3-N from the surrounding agricultural landscape. The objective of this research was to assess cropping systems with the potential to produce a reasonable
Surface activity and foaming properties of saponin-rich plants extracts.
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Saponins are amphiphilic glycosidic secondary metabolites produced by numerous plants. So far only few of them have been thoroughly analyzed and even less have found industrial applications as biosurfactants. In this contribution we screen 45 plants from different families, reported to be rich in
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