Transport in Plants II.Part B:Tissues and Organs

Lüttge,U. und M.G.Pitman

ISBN 10: 3540074538 / ISBN 13: 9783540074533

Published by Springer, 1976

About this Item

Encyclopedia of Plant Physiology. New Series Volume 2. Part B. Springer Vlg. Berlin. Heidelberg. New York. 1976. X. 456 S. gr.8. with 129 figures. (Na.). Kunstld.-2)englisch. ISBN: 3540074538.

Seller Inventory # 3H2191

Bibliographic Details

• Title: Transport in Plants II.Part B:Tissues and Organs
• Publisher: Springer
• Publication Date: 1976
• Language: English
• ISBN 10: 3540074538
• ISBN 13: 9783540074533
• Binding: Hardcover
• Seller catalogs:
  • Botanik Pflanzenkunde

About this title

Synopsis

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.