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Ultrastructural investigations of Arbutus unedo-Laccaria amethystea mycorrhiza synthesized in vitro


Anatomy and ultrastructure of the arbutoid mycorrhiza of Arbutus unedo-Laccaria amethystea from axenic culture are described. In comparison to non-inoculated roots, the rhizodermal cells of mycorrhizas are of greater volume, their nuclei are enlarged and show an irregular shape, plasmalemma and cytoplasm with mitochondria, plastids, endoplasmic reticulum and dictyosomes are increased. Several ontogenetical states are documented. The arbutoid mycorrhiza as a connecting link between ectomycorrhiza and ericoid mycorrhiza is discussed.

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Münzenberger, B., Kottke, I. & Oberwinkler, F. Ultrastructural investigations of Arbutus unedo-Laccaria amethystea mycorrhiza synthesized in vitro. Trees 7, 40–47 (1992).

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Key words

  • Arbutus unedo
  • Laccaria amethystea
  • Mycorrhiza
  • Synthesis
  • Ultrastructure