Results 231 to 240 of about 16,547 (250)
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1999
In the past20 years, improved methods of preservation, microscopy, and data analysis have lead to increased understanding of the ultrastructure of the plasmodesmata of flowering plants. Features such as proteinaceous particles, spokes, and cell wall specializations have been described.
M. E. Cook, L. E. Graham
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In the past20 years, improved methods of preservation, microscopy, and data analysis have lead to increased understanding of the ultrastructure of the plasmodesmata of flowering plants. Features such as proteinaceous particles, spokes, and cell wall specializations have been described.
M. E. Cook, L. E. Graham
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Elongated virus particles in plasmodesmata
Journal of Ultrastructure Research, 1976Numerous particles of tobacco mosaic virus (TMV) were found in plasmodesmata of mesophyll leaf cells of infected Nicotiana tabacum; and of tobacco etch virus (TEV) in infected N. tabacum and Datura stramonium. As in N. tabacum infected with potato virus Y (PVY), the central plasmodesmatal structure, the desmotubule, was often seen, but in the presence ...
M, Weintraub, H W, Ragetli, E, Leung
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Intercellular protein trafficking through plasmodesmata
Plant Molecular Biology, 1998During plant morphogenesis, groups of cells differentiate to form specialized tissues possessing distinct structures and functions. Cell specialization is a result of specific gene expression at the individual cell level. Coordination of differential gene expression among cells requires that cells communicate with one another.
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Plasmodesmata: structure, function and biogenesis
Current Opinion in Plant Biology, 2008Plasmodesmata remain one of the outstanding mysteries in plant biology. In providing conduits for the exchange of small and large, informational molecules they are central to the growth, development and defence of all higher plants. In the past few years, strategies have been devised for the molecular dissection of plasmodesmal composition and function,
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On the hydrodynamics of plasmodesmata
Journal of Theoretical Biology, 1978Abstract The effects of geometry, type of fluid and properties of the desmotubule membrane on the fluid transport in plasmodesma are discussed from a hydrodynamics viewpoint. It is shown that the “necking” of the ends of plasmodesma has a profound effect on the volume flow rates reducing them by several orders of magnitude.
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Plasmodesmata: composition, structure and trafficking
Plant Molecular Biology, 1994Plasmodesmata are highly specialized gatable trans-wall channels that interconnect contiguous cells and function in direct cytoplasm-to-cytoplasm intercellular transport. Computer-enhanced digital imaging analysis of electron micrographs of plasmodesmata has provided new information on plasmodesmatal fine structure.
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Plasmodesmata (Vegetable Kingdom)
1957In 1879 E. Tangl described minute structures which traverse the cell walls of the endosperm of Strychnos nux-vomica, Phoenix dactilifera and Areca oleracea (Tangl 1879, see Fig. 1). From his observations and some microchemical tests he concluded that these structures are “offene Communicationen” (open communications) or “Protoplasmafortsatze ...
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Annual Review of Plant Physiology and Plant Molecular Biology, 1990
A. W. Robards, W. J. Lucas
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A. W. Robards, W. J. Lucas
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1976
It is remarkable that many viruses are able to move so freely through their host plants, despite the fact that virus particles or infective virus nucleic acids are so very much larger than the molecules, such as sugars and amino acids, for which plant translocation systems were presumably ‘designed’. But they do move, and surprisingly quickly.
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It is remarkable that many viruses are able to move so freely through their host plants, despite the fact that virus particles or infective virus nucleic acids are so very much larger than the molecules, such as sugars and amino acids, for which plant translocation systems were presumably ‘designed’. But they do move, and surprisingly quickly.
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