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Страна 1 од 31 резултати
Genetic modification of tomato with the tobacco lycopene β-cyclase gene produces high β-carotene and lycopene fruit.
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Transgenic Solanum lycopersicum plants expressing an additional copy of the lycopene β-cyclase gene (LCYB) from Nicotiana tabacum, under the control of the Arabidopsis polyubiquitin promoter (UBQ3), have been generated. Expression of LCYB was increased some 10-fold in ripening fruit compared to
Functional analysis of multiple carotenogenic genes from Lycium barbarum and Gentiana lutea L. for their effects on beta-carotene production in transgenic tobacco.
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Carotenoids are red, yellow and orange pigments, which are widely distributed in nature and are especially abundant in yellow-orange fruits and vegetables and dark green leafy vegetables. Carotenoids are essential for photosynthesis and photoprotection in plant life and also have different
Ectopic expression of a Citrus kinokuni β-carotene hydroxylase gene (chyb) promotes UV and oxidative stress resistance by metabolic engineering of zeaxanthin in tobacco.
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To investigate the biological function of zeaxanthin under UV light and oxidative stress we have increased its biosynthesis capacity in tobacco plants (Nicotiana tabacum cv. SR-1) by transformation with Citrus kinokuni β-carotene hydroxylase gene (chyb) under constitutive promoter control. The chyb
Expression of a bacterial carotene hydroxylase gene (crtZ) enhances UV tolerance in tobacco.
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Carotenoids are essential components of the photosynthetic apparatus involved in plant photoprotection. To investigate the protective role of zeaxanthin under high light and UV stress we have increased the capacity for its biosynthesis in tobacco plants (Nicotiana tabacum L. cv. Samsun) by
Comparative transcriptome analysis of tobacco (Nicotiana tabacum) leaves to identify aroma compound-related genes expressed in different cultivated regions.
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To identify genes that are differentially expressed in tobacco in response to environmental changes and to decipher the mechanisms by which aromatic carotenoids are formed in tobacco, an Agilent Tobacco Gene Expression microarray was adapted for transcriptome comparison of tobacco leaves derived
Reduction of coproporphyrinogen oxidase level by antisense RNA synthesis leads to deregulated gene expression of plastid proteins and affects the oxidative defense system.
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A full-length cDNA sequence encoding coproporphyrinogen oxidase was inserted in inverse orientation behind a CaMV promoter and transferred to tobacco (Nicotiana tabacum) by standard transformation techniques. Transformants showed reduced coproporphyrinogen oxidase activity and accumulation of
Aluminum Tolerance Acquired during Phosphate Starvation in Cultured Tobacco Cells.
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Al toxicity in cultured tobacco cells (Nicotiana tabacum L. cv Samsun; nonchlorophyllic cell line SL) has been investigated in nutrient medium. In this system, Al and Fe(II) (ferrous ion) in the medium synergistically result in the accumulation of both Al and Fe, the peroxidation of lipids, and
Loliolide, a Carotenoid Metabolite, Is a Potential Endogenous Inducer of Herbivore Resistance.
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Jasmonic acid (JA) plays an important role in the induction of herbivore resistance in many plants. However, JA-independent herbivore resistance has been suggested. An herbivore-resistance-inducing substance was isolated from Tobacco mosaic virus-infected tobacco (Nicotiana tabacum)
Production of ketocarotenoids in tobacco alters the photosynthetic efficiency by reducing photosystem II supercomplex and LHCII trimer stability.
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The consequences of ketocarotenoid production in transgenic tobacco (Nicotiana tabacum) plants expressing a Chlamydomonas reinhardtii gene encoding a β-carotene ketolase were examined concerning the functionality of the photosynthetic apparatus. T1 plants produced less photosynthetic pigments per
Efficient production of saffron crocins and picrocrocin in Nicotiana benthamiana using a virus-driven system
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Crocins and picrocrocin are glycosylated apocarotenoids responsible, respectively, for the color and the unique taste of the saffron spice, known as red gold due to its high price. Several studies have also shown the health-promoting properties of these compounds. However, their high costs hamper
[Changed ratios of some pigments of photosynthesis in Nicotiana tabacum L. induced by exogenic DNA].
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The technology of obtaining the tobacco plants possessing the hereditary changes in the photosynthesis pigments accumulation during development using exogenous DNA has been elaborated. The plants possessing changes in proportion of chlorophylls content in the leave tissues, inherited elevated
Comparative immunological detection of lipids and carotenoids on peptides of photosystem I from higher plants and cyanobacteria.
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Photosystem I preparations were obtained from wild-type tobacco Nicotiana tabacum var. JWB, three chlorophyll-deficient tobacco mutants: Su/su, Su/su var. Aurea and yellow-green leaf patches of the variegated mutant NC 95, Spinacia oleracea and furthermore from the mesophilic cyanobacterium
Influence of Iron Chlorosis on Pigment and Protein Metabolism in Leaves of Nicotiana tabacum L.
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Experiments were conducted on Nicotiana tabacum, L. to study the relation in the grana among chlorophylls, carotenoids, and proteins. The effect of iron chlorosis on protein and pigment synthesis was studied at different stages of chlorosis using glycine-U-C(14). Pigments were separated by thin
Comparative immunological and chemical analysis of lipids and carotenoids of the D1-peptide and of the light-harvesting-complex of photosystem II of Nicotiana tabacum.
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The light-harvesting-complex (LHCP) was isolated from photosystem II of Nicotiana tabacum var. John William's Broadleaf by means of the detergent acetyl-beta-D-glucopyranoside and fractionating centrifugation. The D1-peptide of photosystem II was isolated as a dimer with the molecular mass of 66 kDa
Nicotiana glauca engineered for the production of ketocarotenoids in flowers and leaves by expressing the cyanobacterial crtO ketolase gene.
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Nicotiana glauca is a tobacco species that forms flowers with carotenoid-pigmented petals, sepals, pistil, ovary and nectary tissue. The carotenoids produced are lutein, ss-carotene as well as some violaxanthin and antheraxanthin. This tobacco species was genetically modified for ketocarotenoid
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