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allantoic acid/соя культурная
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Страница 1 от 22 полученные результаты
Enzymes of Purine Biosynthesis and Catabolism in Glycine max: I. COMPARISON OF ACTIVITIES WITH N(2) FIXATION AND COMPOSITION OF XYLEM EXUDATE DURING NODULE DEVELOPMENT.
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During the period examined from 12 to 63 days after planting, the ureides, allantoin and allantoic acid, were the predominant nitrogenous solutes in the xylem exudate of soybeans (Glycine max [L.]) growing solely on symbiotically fixed nitrogen, accounting for approximately 60% and greater than 95%
Allantoin and Allantoic Acid in Tissues and Stem Exudate from Field-grown Soybean Plants.
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Samples of stem exudate and plant tissue collected from field-grown soybean (Glycine max [L.] Merr.) plants were analyzed for allantoin and allantoic acid. Nitrogen in nitrate plus amino acids exceeded ureide N concentration in stem exudate prior to flowering. During all of reproductive development
Autoanalytical procedure for the determination of allantoin and allantoic Acid in soybean tissue.
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Ureide analyses of soybean (Glycine max L.) tissues were accomplished with a modified and simplified automated analysis used to determine allantoin concentration in rat urine. The length of the circuit and flow rates of the solutions were reduced, and NaOH was used for color development at room
Transport of nitrogen in the xylem of soybean plants.
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Experiments were conducted to characterize the distribution of N compounds in the xylem sap of nodulated and nonnodulated soybean plants through development and to determine the effects of exogenous N on the distribution of N compounds in the xylem. Xylem sap was collected from nodulated and
Enzymes of ureide synthesis in pea and soybean.
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Soybean (Glycine max) and pea (Pisum sativum) differ in the transport of fixed nitrogen from nodules to shoots. The dominant nitrogen transport compounds for soybean are ureides, while amides dominate in pea. A possible enzymic basis for this difference was examined.The level of enzymes involved in
Purification of allantoinase from soybean seeds and production and characterization of anti-allantoinase antibodies.
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Allantoinase catalyzes the hydrolysis of allantoin to allantoic acid, a reaction important in both biogenesis and degradation of ureides. Ureide production in cotyledons of germinating soybean (Glycine max L.) seeds has not been studied extensively but may be important in mobilizing nitrogen
Immunoaffinity purification and comparison of allantoinases from soybean root nodules and cotyledons.
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Allantoinase (allantoin amidohydrolase, EC 3.5.2.5) catalyzes the conversion of allantoin to allantoic acid in the final step of ureide biogenesis. We have purified allantoinase more than 4000-fold by immunoaffinity chromatography from root nodules and cotyledons of soybean (Glycine max [L] Merr.).
Effects of Allopurinol [4-Hydroxypyrazolo(3,4-d)Pyrimidine] on the Metabolism of Allantoin in Soybean Plants.
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Some studies on the effects of xanthine oxidase inhibitor allopurinol [4-hydroxypyrazolo(3,4-d)pyrimidine] on allantoin metabolism of soybean plants (Glycine max cv. Tamanishiki) are reported. Soybean seedlings, aseptically germinated for 96 hours on agar containing 1 millimolar allopurinol,
Purine synthesis and catabolism in soybean seedlings : the biogenesis of ureides.
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The ureides, allantoin and allantoic acid, are the major nitrogenous substances transported within the xylem of N(2)-fixing soybeans (Glycine max L. Merr. cv Amsoy 71). The ureides accumulated in the cotyledons, roots and shoots of soybean seedlings inoculated with Rhizobium or grown in the presence
N abundance of nodules as an indicator of N metabolism in n(2)-fixing plants.
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This paper expands upon previous reports of (15)N elevation in nodules (compared to other tissues) of N(2)-fixing plants. N(2)-Fixing nodules of Glycine max (soybeans), Vigna unguiculata (cowpea), Phaseolus vulgaris (common bean), Phaseolus coccineus (scarlet runner bean), Prosopis glandulosa
Two indirect methods for detecting ureide synthesis by nodulated legumes.
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Two methods were developed for the detection of altered ureide metabolism in legume nodules. Both techniques are based on the positive correlation between the presence of high xanthine dehydrogenase (EC 1.2.1.37) specific activity in nodules and the ability of those nodules to produce the ureides,
Ureide assay for measuring nitrogen fixation by nodulated soybean calibrated by N methods.
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We report experiments to quantify the relationships between the relative abundance of ureide-N in root-bleeding sap, vacuum-extracted sap, and hot water extracts of stems and petioles of nodulated soybean (Glycine max [L.] Merrill cv Bragg) and the proportion of plant N derived from nitrogen
Distribution and metabolism of xylem-borne ureido and amino compounds in developing soybean shoots.
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Pulse-chase feeding (30-120 minutes) of (14)C-labeled nitrogenous compounds to cut transpiring shoots was used to investigate the early fate of the major xylem-borne solutes in N(2)-fixing soybean (Glycine max) plants at the V(4) growth stage. By comparison with the foliar distribution of
Ion balance, uptake, and transport processes in n(2)-fixing and nitrate- and urea-dependent soybean plants.
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The objective of this study was to examine the influence of N(2) fixation and NO(3) (-)-N and urea-N assimilation on ion balance, uptake, and transport processes in soybean (Glycine max L. Merr.).Inoculated plants were grown in Perlite supplied daily with nutrient solutions which contained zero-N,
Urease Is Not Essential for Ureide Degradation in Soybean.
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The hypothesis that soybean (Glycine max L. [Merrill]) catabolizes ureides to urea to a physiologically significant extent was tested and rejected. Urease-negative (eu3-e1/eu3-e1) plants were supported by fixed N2 or by 2 mM NH4NO3, so that xylem-borne nitrogen contained predominantly ureides
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