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Review
. 2007 Jul 5;12(7):1290-306.
doi: 10.3390/12071290.

Flavonoids and strigolactones in root exudates as signals in symbiotic and pathogenic plant-fungus interactions

Siegrid Steinkellner  1 , Venasius Lendzemo, Ingrid Langer, Peter Schweiger, Thanasan Khaosaad, Jean-Patrick Toussaint, Horst Vierheilig
Affiliations
Review

Flavonoids and strigolactones in root exudates as signals in symbiotic and pathogenic plant-fungus interactions

Siegrid Steinkellner et al. Molecules. .

Abstract

Secondary plant compounds are important signals in several symbiotic and pathogenic plant-microbe interactions. The present review is limited to two groups of secondary plant compounds, flavonoids and strigolactones, which have been reported in root exudates. Data on flavonoids as signaling compounds are available from several symbiotic and pathogenic plant-microbe interactions, whereas only recently initial data on the role of strigolactones as plant signals in the arbuscular mycorrhizal symbiosis have been reported. Data from other plant-microbe interactions and strigolactones are not available yet. In the present article we are focusing on flavonoids in plant-fungal interactions such as the arbuscular mycorrhizal (AM) association and the signaling between different Fusarium species and plants. Moreover the role of strigolactones in the AM association is discussed and new data on the effect of strigolactones on fungi, apart from arbuscular mycorrhizal fungi (AMF), are provided.

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Figures

Figure 1
Figure 1
Chemical structures of the different groups of flavonoid compounds.
Figure 2
Figure 2
Chemical structure of the synthetic strigolactone analogue GR24.
See this image and copyright information in PMC

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