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Pit (botany)

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Pit (botany)

Pits are parts of plant cell walls which allow the exchange of fluids. In the case of pressure changes in the cell lumen pit aspiration can occur.

Bordered pits (Picea abies)

Types

See also

The cell wall is not totally complete around the cell.It is interrupted by narrow pores carrying fine strands of cytoplasm,which interlink the contents of the cells.They are called PLASMODESMATA. They form a protoplasmic continuum called SYMPLAST. It consists of a canal, lined by plasmamembrane. It has a simple or branched tub le knows as DESMOTUBLE. DESMOTUBLE is an extension of endoplasmic reticulum. Plasmodesmata serves as a passage for many substances to pass through.It is also believed that they have a role in the relay of stimuli.

Further reading

  • Andreas Bresinsky, Christian Körner, Joachim W. Kadereit, Gunther Neuhaus, Uwe Sonnewald: Strasburger – Lehrbuch der Botanik. Begründet von E. Strasburger. Spektrum Akademischer Verlag, Heidelberg 2008 (36. Aufl.) ISBN 978-3-8274-1455-7
  • Dietger Grosser: Die Hölzer Mitteleuropas – Ein mikrophotographischer Holzatlas, Springer Verlag, 1977. ISBN 3-540-08096-1
  • Rudi Wagenführ: Holzatlas, 6. neu bearb. und erw. Aufl., Fachbuchverlag Leipzig im Carl Hanser Verlag, München, 2007. ISBN 978-3-446-40649-0
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