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Root morphology, anatomy and mycotrophy of the achlorophyllous Voyria aphylla (Jacq.) Pers. (Gentianaceae)

Abstract

 Roots of Voyria aphylla only develop hairs where roots of neighboring plants or organic litter are attached. Fungal penetration occurs almost exclusively at these root-to-root attachments. The ecological significance of these immediate hyphal bridges for achlorophyllous plants is discussed. The morphological and anatomical features of V. aphylla roots and its Paris-type arbuscular mycorrhiza (AM) appear to be transitional between those of V. truncata and V. tenella. A hypothetical evolutionary progression of AM and its significance for the development of mycoheterotrophy is proposed.

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Accepted: 1 February 1999

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Imhof, S. Root morphology, anatomy and mycotrophy of the achlorophyllous Voyria aphylla (Jacq.) Pers. (Gentianaceae). Mycorrhiza 9, 33–39 (1999). https://doi.org/10.1007/s005720050260

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  • DOI: https://doi.org/10.1007/s005720050260

  • Key words Voyria
  • Gentianaceae
  • Root structures
  • Arbuscular mycorrhiza
  • Mycoheterotrophy