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Страна 1 од 151 резултати
Association of a Virus with Wheat Displaying Yellow Head Disease Symptoms in the Great Plains.
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Wheat with yellow head disease (YHD) (yellow heads and mosaic leaf symptoms) has been observed in Kansas since 1997. A pathogen was transmitted from the infected wheat to maize by vascular puncture inoculation and to Nicotiana benthamiana by rub inoculation. The original infected wheat and infected
Variable expression of the herpes simplex virus thymidine kinase gene in Nicotiana tabacum affects negative selection.
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The potentials and limitations of negative-selection systems based on the human herpes simplex virus thymidine kinase type-1 (HSVtk) gene, which causes sensitivity to the nucleoside analog ganciclovir, were examined in tobacco as a model system. There were great differences between individual
Virus-induced gene silencing of N gene in tobacco by apple latent spherical virus vectors.
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Virus infections induce an RNA-mediated defense that targets viral RNAs in a nucleotide sequence-specific manner in plants, commonly referred to as virus-induced gene silencing (VIGS). When the virus carries sequences of plant genes, it triggers virus-induced gene silencing (VIGS) and results in the
Isolation and functional characterization of a novel plastidic hexokinase from Nicotiana tabacum.
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Due to their central role in sugar metabolism and signalling plant hexokinases have been studied in great detail, however, little is known about the spatial and temporal expression and the sub-cellular distribution of individual hexokinase isoforms. Based on in planta and in vitro studies the
Engineered Potato virus X nanoparticles support hydroxyapatite nucleation for improved bone tissue replacement.
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Bionanoparticles based on filamentous phages or flexuous viruses are interesting candidates for meeting the challenges of tailoring biomineralization in hydrogel-based bone tissue substitutes. We hypothesized that hydroxyapatite crystal nucleation and matrix mineralization can be significantly
A comparison of regenerated cell walls in tobacco and cereal protoplasts.
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Four independent kinds of observations indicate that the cell wall regenerated by oat (Avena sativa L.) and corn (Zea mays L.) protoplasts in culture is less well developed than that regenerated by tobacco (Nicotiana tabacum L.) protoplasts. Following wall regeneration the cereal protoplasts
Improved sensitivity for high resolution in situ hybridization using resin extraction of methyl methacrylate embedded material.
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An in situ hybridization procedure resulting in both high resolution and sensitivity was established by using the removable methyl methacrylate resin, Technovit 9100. Young bicellular pollen of tobacco (Nicotiana tabacum L. SR-1) was embedded in Technovit 9100 resin and sectioned. The resin was
Formation of Megachromosomes from Heterochromatic Blocks of NICOTIANA TOMENTOSIFORMIS.
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A heterochromatic block (HB) from N. otophora occasionally undergoes great enlargement to form a "megachromosome" in hybrids and hybrid derivatives with N. tabacum. This paper shows that the two large HB's of closely related N. tomentosiformis, and perhaps a smaller one, also have the same
Cloning of a novel antifungal promoter from Phaseolus vulgaris and the determination of its activity in stably transformed Nicotiana tabacum plants.
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To investigate the transcriptional regulation of gene expression, chimeric fusions, between the beta-glucuronidase reporter gene (GUS) and the isolated promoter regions of the pvPDF gene (pvPDF-PRO: GUS), were constructed and introduced into Nicotiana tabacum. Analysis of transgenic pvPDF-PRO:GUS
AN ELECTRON MICROSCOPE STUDY OF TOBACCO MOSAIC VIRUS LESIONS IN NICOTIANA GLUTINOSA L.
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Ultra-thin sections of Nicotiana glutinosa L. leaves inoculated with a concentrated solution of tobacco mosaic virus were made at short intervals from 0 to 78 hours after inoculation. Eight hours after inoculation, the size of starch grains increased. This was followed by rupture of cytoplasmic and
Cytoplasmic male sterility in Nicotiana, restoration of fertility, and the nucleolus.
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Plants with the cytoplasm of Nicotiana repanda and the chromosomes of N. tabacum produce nonfunctional and feminized anthers. Introduction of a satellited fragment chromosome, apparently derived from N. repanda, restores normal anthers and pollen fertility. The fragment is somatically stable and
High-level expression of Camelid nanobodies in Nicotiana benthamiana.
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Nanobodies (or VHHs) are single-domain antigen-binding fragments derived from Camelid heavy chain-only antibodies. Their small size, monomeric behaviour, high stability and solubility, and ability to bind epitopes not accessible to conventional antibodies make them especially suitable for many
Recombinant production of bovine Lactoferrin-derived antimicrobial peptide in tobacco hairy roots expression system.
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LFchimera is a chimerical peptide containing Lactoferricin and Lactoferrampin antimicrobial peptides of bovine lactoferrin, and it has stronger bactericidal activity. Antimicrobial peptides (AMPs) like LFchimera have great potential as an alternative candidate for conventional antibiotics. Plant
NtGNL1 is involved in embryonic cell division patterning, root elongation, and pollen tube growth in tobacco.
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The function of the ARF-GEF family has drawn great attention recently, especially GNOM and GNL1, owing to their important role in plant development. A homolog of GBF was identified in Nicotiana tabacum, named NtGNL1, which is ubiquitously expressed throughout the tobacco life cycle. In NtGNL1 RNAi
Gene Delivery to Tobacco Root Cells with Single-Walled Carbon Nanotubes and Cell-Penetrating Fusogenic Peptides.
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Development of efficient, easy, and safe gene delivery methods is of great interest in the field of plant biotechnology. Considering the limitations of the usual transfection methods (such as transgene size and plant type), several new techniques have been tested for replacement. The success of some
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