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Plasmodesmata pp 261–293Cite as

Plasmodesmata in the Phloem-Loading Pathway

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Abstract

Twenty years ago, Brian Gunning began his analysis of the role of plasmodesmata in short-distance transport of assimilates to the phloem (Gunning1976) by stating that the “relevant evidence is both meagre and circumstantial” for a comprehensive discussion of the subject. At that time there were very few quantitative analyses of plasmodesmata along the assimilate pathway from the mesophyll to the phloem (Geiger et al.1973; Gunning et al.1974; Kuo et al.1974). There was also considerable controversy regarding the probable pathway(s) and mechanism(s) of phloem loading. Today, there is an extensive body of information on everything from plasmodesmal frequency and distribution in dicot and monocot species to detailed aspects of various phloem-loading models (Riesmeier et al.1993,1994; Sauer and Stolz1994; Grusak et al.1996; Rentsch and Frommer1996; Kiihn et al.1997). We also know much more about the fundamentals of plasmodesmal structure (Ding et al.1992b; Lucas et al.1993a) and the development and possible function of secondary plasmodesmata (Monzer1990,1991; Kollmann and Glockmann1991; Ding and Lucas1996; Ehlers and Kollmann1996; Ehlers et al.1996; Volk et al.1996). Analysis of alteration in carbon allocation and biomass partitioning in transgenic tobacco plants expressing native and mutated forms of the tobacco mosaic virus movement protein has led to the proposal that plasmodesmata in a leaf form a special communication network between the mesophyll and the phloem (Lucas et al.1996).

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Authors and Affiliations

  1. Institut de recherche en biologie vegetale, University de Montreal, 4101 est, rue Sherbrooke, Montreal (Quebec), H1X2B2, Canada

    D. U. Beebe

  2. Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53705, USA

    W. A. Russin

Authors
  1. D. U. Beebe
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  2. W. A. Russin
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  1. Institut für Allgemeine Botanik und Pflanzenphysiologie, Justus-Liebig-Universität Giessen, Senckenbergstr. 17, D-35390, Giessen, Germany

    A. J. E. van Bel  & Wilhelmus J. P. Van Kesteren  & 

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© 1999 Springer-Verlag Berlin Heidelberg

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Beebe, D.U., Russin, W.A. (1999). Plasmodesmata in the Phloem-Loading Pathway. In: van Bel, A.J.E., Van Kesteren, W.J.P. (eds) Plasmodesmata. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60035-7_15

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  • DOI: https://doi.org/10.1007/978-3-642-60035-7_15

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  • Print ISBN: 978-3-540-65169-7

  • Online ISBN: 978-3-642-60035-7

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