Transport in Plants II

1. Front Matter

   Pages I-XII

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2. Pathways of Transport in Tissues

   1. Front Matter

      Pages 1-1

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   2. Apoplasmic Transport in Tissues

      • A. Läuchli

      Pages 3-34

   3. Symplasmic Transport in Tissues

      • R. M. Spanswick

      Pages 35-53

3. Particular Tissue Systems

   1. Front Matter

      Pages 55-55

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   2. Transport Processes in Roots

      • M. G. Pitman, W. P. Anderson, U. Lüttge, E. Epstein

      Pages 57-156

   3. Transport Processes in Leaves

      • U. Lüttge, M. G. Pitman, W. D. Jeschke, T. C. Hsiao

      Pages 157-221

   4. Elimination Processes by Glands

      • U. Lüttge, M. G. Pitman, A. E. Hill, B. S. Hill, E. Schnepf

      Pages 222-277

   5. Transport in Symbiotic Systems Fixing Nitrogen

      • J. S. Pate

      Pages 278-303

4. Control and Regulation of Transport in Tissues and Integration in Whole Plants

   1. Front Matter

      Pages 305-305

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   2. Effect of Hormones and Related Substances on Ion Transport

      • R. F. M. Van Steveninck

      Pages 307-342

   3. Cellular Differentiation, Ageing and Ion Transport

      • R. F. M. Van Steveninck

      Pages 343-371

   4. Genotypic Variation in Transport

      • A. Läuchli

      Pages 372-393

   5. Regulation in the Whole Plant

      • J. F. Sutcliffe

      Pages 394-417

   6. Epilog: Integration of Transport in the Whole Plant

      • M. G. Pitman, U. Lüttge

      Pages 418-419

5. Back Matter

   Pages 421-XXII

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In the first part (Part A) of this volume on transport, there was an emphasis on the processes occurring at the membranes bounding the cells. It was convenient to distinguish active and passive processes of transport across the membranes, and to recognize that certain transport processes may be regulated by internal factors in the cells such as cytoplasmic pH, concentrations of ions, of malate or of sugar in the vacuoles, or the hydrostatic pressure. Cells in tissues and organs show the same kinds of properties as individual cells, but in addition there can be cell to cell transport related to the organization of the tissue. Firstly cells within a tissue are separated from the external solutions by a diffusion path comprising parts of the cell walls and intercellular spaces; more generally this extra-cytoplasmic part of the tissue has been called the apoplasm. A similar term is "free space". Secondly, the anatomy of cells in tissues seems to allow some facilitated, local transport between cells in a symplasm. Entry into the symplast and subsequent transport in a symplasmic continuum seems to be privileged, in that ions may not have to mix with the bulk of the cytoplasm and can pass from cell to cell in particular cytoplasmic structures, plasmodesmata. In Chara plants, this kind of transport is found operating across the multi-cellular nodes as the main means of transport between the long internodal cells.

• Lysin
• Phytochrome
• Protein
• carbohydrates
• cell
• development
• membrane
• nitrogen
• nutrition
• plant
• polysaccharide
• proteins
• regulation
• transport
• water

• Technische Hochschule, Botanisches Institut, Darmstadt, Federal Republic of Germany

  U. Lüttge

• School of Biological Sciences (A 12), University of Sydney, Sydney, Australia

  M. G. Pitman

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