Root Physiology: from Gene to Function pp 127-140

Part of the Plant Ecophysiology book series (KLEC, volume 4)

The roots of carnivorous plants

  • Wolfram Adlassnig
  • Marianne Peroutka
  • Hans Lambers
  • Irene K. Lichtscheidl
Chapter

Abstract

Carnivorous plants may benefit from animal-derived nutrients to supplement minerals from the soil. Therefore, the role and importance of their roots is a matter of debate. Aquatic carnivorous species lack roots completely, and many hygrophytic and epiphytic carnivorous species only have a weakly developed root system. In xerophytes, however, large, extended and/or deep-reaching roots and sub-soil shoots develop. Roots develop also in carnivorous plants in other habitats that are hostile, due to flooding, salinity or heavy metal occurance. Information about the structure and functioning of roots of carnivorous plants is limited, but this knowledge is essential for a sound understanding of the plants’ physiology and ecology. Here we compile and summarise available information on:
  1. (1)

    The morphology of the roots.

     
  2. (2)

    The root functions that are taken over by stems and leaves in species without roots or with poorly developed root systems; anchoring and storage occur by specialized chlorophyll-less stems; water and nutrients are taken up by the trap leaves.

     
  3. (3)

    The contribution of the roots to the nutrient supply of the plants; this varies considerably amongst the few investigated species. We compare nutrient uptake by the roots with the acquisition of nutrients via the traps.

     
  4. (4)

    The ability of the roots of some carnivorous species to tolerate stressful conditions in their habitats; e.g., lack of oxygen, saline conditions, heavy metals in the soil, heat during bushfires, drought, and flooding.kg]Key words

     
carnivorous plants insectivorous plants morphology nutrition root 

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Copyright information

© Springer 2005

Authors and Affiliations

  • Wolfram Adlassnig
    • 1
  • Marianne Peroutka
    • 1
  • Hans Lambers
    • 2
  • Irene K. Lichtscheidl
    • 1
  1. 1.Institute of Ecology and Conservation BiologyUniversity of ViennaViennaAustria
  2. 2.School of Plant Biology, Faculty of Natural and Agricultural SciencesThe University of Western AustraliaCrawleyAustralia

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