Ectodesmos

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Ectodesmata or ectodesmata (from the Greek ektos = "outside" and desma = "band") are pore-like areas that are located in the outer walls of the epidermis of the leaves of plants. They represent the connection between the protoplasts of the epidermal cells or the whole plant and the outside world, ensure better permeability of water and thus resemble plasmodesmata .

The term was coined in 1956 by Wilhelm Ruhland , previously the term "outer wall plasmodesmen" was used. Wolfgang Franke proved in 1972 that they can be distinguished from plasmodesmata and suggested the alternative term Teichoden , which ultimately did not catch on.

Individual evidence

  1. a b Herder Lexicon of Biology. Spektrum Akademischer Verlag, Heidelberg 2003, ISBN 3-8274-0354-5 , keyword "Ectodesms."
  2. Wolfgang Franke: About the relationship between the ectodesms and the absorption of matter through leaves - Part I - observations on Plantago major L. In: Planta. Volume 55, number 4, 1960, pp. 390-423, DOI: 10.1007 / BF01915467 .
  3. Hans Jessen, Helmut Schulze: Botany in question and answer: Over 1300 questions and answers. 15th edition. M. & H. Schaper, Alfeld-Hannover 2001, ISBN 3-7944-0195-6 , p. 229, limited preview in the Google book search.
  4. ^ Gerhard Wagenitz : Dictionary of Botany. Morphology, anatomy, taxonomy, evolution. With English-German and French-German registers . 2nd expanded edition. Nikol, Hamburg 2008, ISBN 978-3-937872-94-0 , pp. 91 (licensed edition from 2003).