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Folia Geobotanica

, Volume 38, Issue 2, pp 125–138 | Cite as

Locally accumulated extractable compounds in mycorrhizal parts of maize roots suppress the growth ofHyphae ofGlomus intraradices

  • Milan Gryndler
  • Hana Hršelová
  • Radka Malcová
  • Tomáš Cajthaml
  • Petr Halada
Article

Abstract

Extracts from mycorrhizal roots, non-mycorrhizal roots obtained from mycorrhizal root systems, and non-inoculated maize roots were fractionated by gel chromatography and their effects on the hyphal growth of arbuscular mycorrhizal fungusGlomus intraradices were studied under aseptic conditions. Low-molecular (MW lower than 3000) extracts obtained from mycorrhizal roots contained the fraction that most rapidly suppresses the hyphae growth. This was not observed for the fastest fraction obtained from non-mycorrhizal roots. The increased content of some inorganic ions, mainly potassium, was recorded in the fastest fraction of the mycorrhizal root extracts. At the same time, higher contents of two unidentified major organic compounds were revealed in this fraction of the mycorrhizal root extract compared to the non-mycorrhizal one. Some of these compounds, which are locally accumulated in the mycorrhizal parts of the root, are probably responsible for the effect observed. Potassium alone, even at a high concentration, cannot be responsible for the supression observed.

Keywords

Fractions Potassium Root extract 

Nomenclature

Domsch et al. (1980) Schenck & Smith (1982) 

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Copyright information

© Institute of Botany, Academy of Sciences of the Czech Republic 2003

Authors and Affiliations

  • Milan Gryndler
    • 1
  • Hana Hršelová
    • 1
  • Radka Malcová
    • 2
  • Tomáš Cajthaml
    • 1
  • Petr Halada
    • 1
  1. 1.Institute of MicrobiologyAcademy of Sciences of the Czech RepublicPrague 4Czech Republic
  2. 2.Institute of BotanyAcademy of Sciences of the Czech RepublicPrůhoniceCzech Republic

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