Journal of Chemical Ecology

, Volume 19, Issue 10, pp 2317–2327

Flavonoids released by carrot (Daucus carota) seedlings stimulate hyphal development of vesicular-arbuscular mycorrhizal fungi in the presence of optimal CO2 enrichment

  • M. J. Poulin
  • R. Bel-Rhlid
  • Y. Piché
  • R. Chênevert
Article

DOI: 10.1007/BF00979666

Cite this article as:
Poulin, M.J., Bel-Rhlid, R., Piché, Y. et al. J Chem Ecol (1993) 19: 2317. doi:10.1007/BF00979666

Abstract

Carbon dioxide has been previously identified as a critical volatile factor that stimulates hyphal growth ofGigaspora margarita, a vesiculararbuscular mycorrhizal fungus, and we determined the optimal concentration at 2.0%. The beneficial effect of CO2 on fungal development is also visible in the presence of stimulatory (quercetin, myricetin) or inhibitory (naringenin) flavonoids. Sterile root exudates from carrot seedlings stimulate the hyphal development ofG. margarita in the presence of optimal CO2 enrichment. Three flavonols (quercetin, kaempferol, rutin or quercetin 3-rutinoside) and two flavones (apigenin, luteolin) were identified in carrot root exudates by means of HPLC retention time. Flavonols like quercetin and kaempferol are known to have stimulatory effects on hyphal growth ofG. margarita.

Key Words

Daucus carotaseedlingsGigaspora margaritafungisymbiosishyphal growthvesicular-arbuscular mycorrhizaeflavonoidscarbon dioxideexudates

Copyright information

© Plenum Publishing Corporation 1993

Authors and Affiliations

  • M. J. Poulin
    • 1
  • R. Bel-Rhlid
    • 2
  • Y. Piché
    • 1
  • R. Chênevert
    • 2
  1. 1.Faculté de Foresterie et de GéomatiqueCentre de Recherche en Biologie ForestièreCanada
  2. 2.Département de chimie, Faculté des Sciences et de GénieUniversité LavalSainte-FoyCanada