Journal of Chemical Ecology

, Volume 23, Issue 7, pp 1755–1767

Plant Growth and Arbuscular Mycorrhizal Fungal Colonization Affected by Exogenously Applied Phenolic Compounds

  • Leadir L. M. Fries
  • Raymond S. Pacovsky
  • Gene R. Safir
  • Jose Oswaldo Siqueira
Article

DOI: 10.1023/B:JOEC.0000006449.09141.cd

Cite this article as:
Fries, L.L.M., Pacovsky, R.S., Safir, G.R. et al. J Chem Ecol (1997) 23: 1755. doi:10.1023/B:JOEC.0000006449.09141.cd

Abstract

The effects of the application of 0.25 or 1.0 mM p-coumaric acid, p-hydroxybenzoic acid, or quercetin on growth and colonization of clover (Trifolium repens L. cv. Ladino) and sorghum (Sorghum bicolor L.) roots by the arbuscular mycorrhizal (AM) fungus Glomus intraradices Schenck and Smith were studied. In general, soil application of these compounds at 0.25 mM stimulated plant growth and AM colonization, whereas at 1.0 mM these phenolics were inhibitory to both growth and colonization. Such effects were noted for both clover and sorghum. The results suggest that phenolic compounds, commonly found in many soils, influence the establishment of AM symbioses, and these compounds may have immediate effects on host growth. Studies involving these chemicals and their effects on mycorrhizal associations may provide new insights concerning the importance of the AM symbiosis in agricultural systems. These phenolic compounds may be used as potential soil amendments to enhance AM fungal colonization, and thus, exploit indigenous populations of AM fungi.

Glomus intraradices mycorrhizal fungi phenolics p-coumaric acid p-hydroxybenzoic acid quercetin Sorghum bicolor Trifolium repens 

Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • Leadir L. M. Fries
    • 1
    • 2
  • Raymond S. Pacovsky
    • 1
    • 3
  • Gene R. Safir
    • 1
  • Jose Oswaldo Siqueira
    • 1
    • 4
  1. 1.Department of Botany and Plant PathologyMichigan State UniversityEast Lansing
  2. 2.DTA - UFSMSanta Maria - R.S.Brazil
  3. 3.Depto De Ciências Do SoloEsalQ-USPPiracicaba-S.P.Brazil
  4. 4.DCS - UFLLavras - MGBrazil

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