cotyledon/carbohydrate

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The role of roots and cotyledons as storage organs in early stages of establishment in Quercus crispula: a quantitative analysis of the nonstructural carbohydrate in cotyledons and roots.

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Quercus seedlings have hypogeal cotyledons and tap roots, both of which act as storage organs. The importance of the storage function in the two organs may change as the seedling develops. Therefore, changes in carbohydrate reserves in cotyledons and roots of Q. crispula grown under 40 % and 3 % of

The Effect of Root Formation on the Levels of Protein, Chlorophyll, RNA, DNA and Carbohydrates in Excised Cotyledons of Cucurbita pepo.

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In attached cotyledons of Cucurbita pepo L. protein, chlorophyll, RNA, DNA and carbohydrates were found to increase to a maximum level 14 days after commencement of germination, followed by a sharp decline thereafter. Cotyledons excised and planted in a nutrient solution 14 days after sowing showed

Expression of a yeast-derived invertase in developing cotyledons of Vicia narbonensis alters the carbohydrate state and affects storage functions.

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In plants the carbohydrate state provides signals to adjust metabolism to specific physiological conditions. Storage-active sink organs like seeds often contain high levels of sucrose. In order to change the sugar status during seed development a yeast-derived invertase gene was expressed in Vicia

Incorporation of fucose into the carbohydrate moiety of phytohemagglutinin in developing Phaseolus vulgaris cotyledons.

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Incubation of developing cotyledons of P. vulgaris with [(3)H]fucose resulted in the incorporation of radioactivity into the cell wall, membranous organelles and soluble macromolecules. Fractionation of the proteins by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, followed by

Gluconeogenesis from storage wax in the cotyledons of jojoba seedlings.

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The cotyledons of jojoba (Simmondsia chinensis) seeds contained 50 to 60% of their weight as intracellular wax esters. During germination there was a gradual decrease in the wax content with a concomitant rise in soluble carbohydrates, suggesting that the wax played the role of a food reserve. Thin

Biosynthesis and processing of phytohemagglutinin in developing bean cotyledons.

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Phytohemagglutinin (PHA) is a family of tetrameric isolectins which accumulate in the protein bodies of developing Phaseolus vulgaris cotyledons. Each tetramer contains erythroagglutinating (E) or lymphocyte-mitogenic (L) subunits, or a combination of both. The subunits have Mr around 33000, E being

Influence of Endogenous Cytokinins on Reverse Mobilization in Cotyledons of Cicer arietinum L: Reproduction of Endogenous Levels of Total Cytokinins, Zeatin, Zeatin Riboside, and Their Corresponding Glucosides.

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The embryonic axis plays an essential role in the mobilization of the main reserves of the cotyledons of seeds of Cicer arietinum L. cv Castellana. This control by the axis of the metabolism of the storage products of the cotyledons largely takes place through the cytokinins, which are transported

The localization of enzymes in the cotyledons of Pisum arvense L. during germination.

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Enzyme activity is not uniformly distributed through the cotyledon of Pisum arvense. Initially the peripheral region, certain scattered cells of the storage tissue and the procambium show a high level of activity of succinic dehydrogenase, cytochrome oxidase, acid phosphatase and esterase. Activity

Salt-adaptive strategies in oil seed crop Ricinus communis early seedlings (cotyledon vs. true leaf) revealed from proteomics analysis.

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Soil salinity is a major abiotic stress affecting crop growth and productivity. Ricinus communis has good salt tolerance and is also an important oilseed crop throughout the world. Early seedling stage (such as cotyledon expansion stage) is the most vulnerable period for plant under stresses.

Posttranslational processing of concanavalin A precursors in jackbean cotyledons.

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Metabolic labeling of immature jackbean cotyledons with 14C-amino acids was used to determine the processing steps involved in the assembly of concanavalin A. Pulse-chase experiments and analyses of immunoprecipitated lectin forms indicated a complex series of events involving seven distinct

Switch from heterotrophy to autotrophy of apple cotyledons depends on NO signal.

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CONCLUSIONS NO accelerates transition of germinated embryos from heterotrophy to autotrophy by stimulation of chloroplasts maturation. NO-mediated autotrophy of apple seedlings correlates to increased content of RuBisCO small subunit and improvement of parameters of chlorophyll a fluorescence.

Differentially expressed genes in cotyledon of ewes fed mycotoxins

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Background: Ergot alkaloids (E+) are mycotoxins produced by the endophytic fungus, Epichloë coenophiala, in tall fescue that are associated with ergotism in animals. Exposure to ergot alkaloids during gestation reduces fetal weight and

Localization of lectins in legume cotyledons.

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High-resolution techniques for the localization of lectins are described. Concanavalin A (Con A) and phytohaemagglutinin (PHA) are localized using a fluorescent method with (FITC)-labelled immunoglobulins which bind to the lectins in sections of jack and red kidney bean cotyledons. Specificity is

Phytochemical composition and antioxidant activity of coconut cotyledon.

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Coconut tree (Cocos nucifera L.), a perennial, monocot tree, belonging to the family Arecaceae, is distributed through the tropics. Bioactivities of coconut water, husk fiber, oil, flowers, spadix and mesocarp of coconut fruit are widely reported. However, there is no study on cotyledon of

Zea3: a pleiotropic mutation affecting cotyledon development, cytokinin resistance and carbon-nitrogen metabolism.

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When photomorphogenesis takes place during early plant development, the cotyledons undergo a metabolic transition from heterotrophic sink metabolism to autotrophic source metabolism. A mutant screen was devised for seedlings affected in the regulation of nitrate assimilation during this early

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