Tropaeolum Majus L
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Detecção de proteinas que se ligam a cadeia de B(1-4) glucanos em cotiledones de chagas (Tropaeolum majus) durante o periodo de mobilização de xiloglucano de reserva
Xiloglucanos (xgs) são polissacarídeos que ocorrem em parede celulares principalmente de dicotiledôneas. Possuem uma cadeia principal idêntica a da celulose P(1_4) glucano e ramificações com xilose, galactose e/ou arabinose. Sua principal função nas paredes celulares é orientar as microfibrilas de celulose e consequentemente os xgs têm papel fundam
Publicado em: 2000
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14. Synthesis of Benzylglucosinolate in Tropaeolum majus L. (Isothiocyanates as Potent Enzyme Inhibitors).
Benzylglucosinolate accumulates in mature plants of Tropaeolum majus L. The biosynthetic capacity for synthesis of benzylglucosinolate and the total content of benzylglucosinolate have been investigated during plant development and in different tissues. The content increased from 5 mg of benzylglucosinolate in the fresh seed to between 200 and 400 mg in the
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15. Biosynthesis of Mustard Oil Glucosides: Sodium Phenylacetothiohydroximate and Desulfobenzylglucosinolate, Precursors of Benzylglucosinolate in Tropaeolum majus1
The biosynthesis of the mustard oil glucoside, benzylglucosinolate, was studied in Tropaeolum majus L. A number of labeled compounds were administered to plant shoots and the incorporation of tracer into benzylglucosinolate, isolated as the crystalline tetramethyl-ammonium salt, was measured. In order of decreasing efficiency of conversion into benzyl-glucos
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16. Isolation of a Microsomal Enzyme System Involved in Glucosinolate Biosynthesis from Seedlings of Tropaeolum majus L.
An in vitro system that converts phenylalanine to phenylacetaldoxime in the biosynthesis of the glucosinolate glucotropaeolin has been established in seedlings of Tropaeolum majus L. exposed to the combined treatment of jasmonic acid, ethanol, and light. The treatment resulted in a 9-fold induction, compared with untreated, dark-grown seedlings, of de novo b
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17. Characterization and expression of transcripts induced by oxygen deprivation in maize (Zea mays L.).
Until recently, the only genes described in plants induced by oxygen deprivation (anoxia or hypoxia) encoded enzymes of glucose-phosphate metabolism. In the present study, two flooding-induced maize (Zea mays L.) genes that may serve a different function have been identified. These genes, with unique kinetics of mRNA induction under flooding conditions, were
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18. Fucosyltransferase and the Biosynthesis of Storage and Structural Xyloglucan in Developing Nasturtium Fruits1
Young, developing fruits of nasturtium (Tropaeolum majus L.) accumulate large deposits of nonfucosylated xyloglucan (XG) in periplasmic spaces of cotyledon cells. This “storage” XG can be fucosylated by a nasturtium transferase in vitro, but this does not happen in vivo, even as a transitory signal for secretion. The only XG that is clearly fucosyl
American Society of Plant Physiologists.
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19. Xyloglucan galactosyl- and fucosyltransferase activities from pea epicotyl microsomes.
Microsomal membranes from growing tissue of pea (Pisum sativum L.) epicotyls were incubated with the substrate UDP-[14C]galactose (Gal) with or without tamarind seed xyloglucan (XG) as a potential galactosyl acceptor. Added tamarind seed XG enhanced incorporation of [14C]Gal into high-molecular-weight products (eluted from columns of Sepharose CL-6B in the v
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20. Microsomal Lyso-Phosphatidic Acid Acyltransferase from a Brassica oleracea Cultivar Incorporates Erucic Acid into the sn-2 Position of Seed Triacylglycerols.
Developing seeds from Brassica oleracea (L.) var botrytis cv Sesam were examined for the ability to biosynthesize and incorporate erucic acid into triacylglycerols (TAGs). Seed embryos at mid-development contained a high concentration of erucic acid in diacylglycerols and TAGs, and substantial levels were also detected in free fatty acids, acyl-coenzyme A (C