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Glycosidation of apigenin results in a loss of its activity on different growth parameters of arbuscular mycorrhizal fungi from the genus Glomus and Gigaspora |
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| Authors: | J.M. Scervino R. Erra-Bassells H. Vierheilig A. Godeas |
| Affiliation: | a Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 4P Ciudad Universitaria, (1428) Buenos Aires, Argentina b CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 3P Ciudad Universitaria, (1428) Buenos Aires, Argentina c Institut für Pflanzenschutz, Department für Angewandte Pflanzenwissenschaften und Pflanzenbiotechnologie, Universität für Bodenkultur Wien, Peter-Jordan-Strasse 82, 1190 Wien, Austria d Departamento de Microbiología, Estación Experimental de Zaidín, CSIC, (18008) Granada, Spain |
| Abstract: | The effect of different concentrations (0.5, 2 and 8 μM) of apigenin and its glycosidated form 5,7,4′-hydroxy flavone glycoside on arbuscular mycorrhizal (AM) fungal spore germination, hyphal growth, hyphal branching, the formation of entry points and root colonization of Gigaspora. rosea, Gi. margarita, Glomus mosseae and G. intraradices was tested. The lowest apigenin concentration (0.5 μM) nearly doubled hyphal branching, the formation of entry points and root colonization of all four tested fungi, whereas higher concentrations (2 and 8 μM) nearly doubled the hyphal growth of Gi. margarita, G. mosseae and G. intraradices. In none of the treatments with the apigenin-glycoside any effect on AM fungi could be observed. Our data show that apigenin exhibits an AM fungal genus and even species activity and we provide strong evidence that glycosidation results in a loss of its activity towards AM fungi. |
| Keywords: | Arbuscular mycorrhiza Glomeromycota Flavonoid Apigenin Signal molecule Symbiosis |
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