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Pagina 1 a partire dal 16 risultati
Sorbitol synthesis in transgenic tobacco with apple cDNA encoding NADP-dependent sorbitol-6-phosphate dehydrogenase.
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The apple (Malus domestica) cDNA encoding NADP-dependent sorbitol-6-phosphate dehydrogenase (S6PDH) was stably integrated and expressed in transgenic tobacco (Nicotiana tabacum cv. SR1). Expression of the cDNA in either a sense or antisense orientation was accomplished using cauliflower mosaic virus
Sorbitol-6-phosphate dehydrogenase expression in transgenic tobacco. High amounts of sorbitol lead to necrotic lesions
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We analyzed transgenic tobacco (Nicotiana tabacum L.) expressing Stpd1, a cDNA encoding sorbitol-6-phosphate dehydrogenase from apple, under the control of a cauliflower mosaic virus 35S promoter. In 125 independent transformants variable amounts of sorbitol ranging from 0.2 to 130 &mgr;mol g-1
Manipulation of in vivo sorbitol production alters boron uptake and transport in tobacco
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Recent evidence that some species can retranslocate boron as complexes with sugar alcohols in the phloem suggests a possible mechanism for enhancing boron efficiency. We investigated the relationship between sugar alcohol (sorbitol) content, boron uptake and distribution, and translocation of
Transgenically enhanced sorbitol synthesis facilitates phloem boron transport and increases tolerance of tobacco to boron deficiency
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The mobility of elements within plants contributes to a plant species' tolerance of nutrient deficiencies in the soil. The genetic manipulation of within-plant nutrient movement may therefore provide a means to enhance plant growth under conditions of variable soil nutrient availability. In these
Overexpression of NtHAL3 genes confers increased levels of proline biosynthesis and the enhancement of salt tolerance in cultured tobacco cells.
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The Hal3 protein of Saccharomyces cerevisiae inhibits the activity of PPZ1 type-1 protein phosphatases and functions as a regulator of salt tolerance and cell cycle control. In plants, two HAL3 homologue genes in Arabidopsis thaliana, AtHAL3a and AtHAl3b, have been isolated and the function of
Wildfire of Soybean Caused by Pseudomonas syringae pv. tabaci, a New Disease in Korea.
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In 2006 and 2007, a new bacterial disease was observed in field-cultivated soybeans in Boeun District and Munkyung City of Korea. The disease caused severe blighting of soybean (Glycine max) leaves. Soybean leaves in fields showed yellowish spots with brown centers. Brown and dead areas of variable
Sucrose transport into plasma membrane vesicles from tobacco leaves by H+ symport or counter exchange does not display a linear component.
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Uptake of [14C]sucrose by plasma membrane vesicles from leaves of tobacco (Nicotiana tabacum L.) was measured after the imposition of an inwardly directed proton gradient (delta pH = 2) and an electrical gradient (delta psi = -68 mV, inside negative) across the vesicle membrane. The vesicles were
Abscisic Acid accelerates adaptation of cultured tobacco cells to salt.
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Adaptation of tobacco (Nicotiana tabacum L. var Wisconsin 38) cells to NaCl was accelerated by (+/-) abscisic acid (ABA). In medium with 10 grams per liter NaCl, ABA stimulated the growth of cells not grown in medium with NaCl (unadapted, S-0) with an increasing response from 10(-8) to 10(-4) molar.
Sugar-Induced Increase of Calcium-Dependent Protein Kinases Associated with the Plasma Membrane in Leaf Tissues of Tobacco.
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The sugar-inducible expression of genes for sporamin and [beta]-amylase in leaf explants of sweet potato (Ipomoea batatas) and that of a [beta]-glucuronidase-fusion gene, with the promoter of the gene for [beta]-amylase in leaves of tobacco (Nicotiana tabacum), requires Ca2+ signaling (M. Ohto, K.
Tnt1 retrotransposon tagging of STF in Medicago truncatula reveals tight coordination of metabolic, hormonal and developmental signals during leaf morphogenesis.
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Tnt1 (transposable element if Nicotiana tabaccum cell type 1) is one of the very few active LTR retrotransposons used for gene tagging in plants. In the model legume Medicago truncatula, Tnt1 has been effectively used as a gene knock-out tool to generate several very useful mutants. stenofolia (stf)
Isolation and partial characterization of vacuoles from tobacco protoplasts.
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Protoplasts from suspension-cultured cells of Nicotiana glutinosa L. were lysed in 0.3 molar sorbitol in 2 millimolar ethylenediaminetetraacetate-tris(hydroxymethyl) aminomethane (pH 7.5) to release intact vacuoles. The vacuoles were purified by centrifugation in a Ficoll step gradient. About 11% of
Specific roles of alpha- and gamma-tocopherol in abiotic stress responses of transgenic tobacco.
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Tocopherols are lipophilic antioxidants that are synthesized exclusively in photosynthetic organisms. In most higher plants, alpha- and gamma-tocopherol are predominant with their ratio being under spatial and temporal control. While alpha-tocopherol accumulates predominantly in photosynthetic
Bacterial Wilt of Solanaceae Caused by Ralstonia solanacearum Race 1 Biovar 3 in Mali.
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Ralstonia solanacearum (Smith) Yabuuchi et al. causes bacterial wilt worldwide on a wide range of plant species. In Mali, the disease is commonly found on potato (Solanum tuberosum L.), tomato (Lycopersicon esculentum var. esculentum L.), pepper (Capsicum annuum L.), eggplant (Solanum melongena L.),
Abiotic stress resistance, a novel moonlighting function of ribosomal protein RPL44 in the halophilic fungus Aspergillus glaucus.
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Ribosomal proteins are highly conserved components of basal cellular organelles, primarily involved in the translation of mRNA leading to protein synthesis. However, certain ribosomal proteins moonlight in the development and differentiation of organisms. In this study, the ribosomal protein L44
Fruit Rot of Tinda Caused by Pseudomonas aeruginosa-A New Report from India.
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Fruit rot disease (FRD), an emerging problem of tinda (Praecitrullus fistulosus) in India. FRD epidemics begin during rainy and warm weather and often spoil marketable produce. Symptoms appear as numerous, pale brown-to-dark brown, deeply penetrating circular soft rot lesions on fleshy fruit
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