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Gewählte Publikation:

Steinkellner, S; Mammerler, R; Vierheilig, H.
(2005): Microconidia germination of the tomato pathogen Fusarium oxysporum in the presence of root exudates
J PLANT INTERACT. 2005; 1(1): 23-30. FullText FullText_BOKU

Abstract:
In this study we assessed microconidia germination of the tomato pathogens F. oxysporum f. sp. lycopersici (Fol) and F. oxysporum f. sp. radicis-lycopersici (Forl) in the presence of root exudates. Tomato root exudates stimulated microconidia germination and the level of stimulation was affected by plant age. Treatment of root exudates with insoluble polyvinylpolypyrrolidone, which binds phenolic compounds, indicated that tomato root exudates contain phenolic compounds inhibitory to F. oxysporum microconidia germination. Our study indicates that tomato root exudates similarly stimulate microconidia germination of both Fol and Forl. However, individual F. oxysporum strains differ in the degree of germination response to the root exudates. Furthermore, root exudates from non-host plants also contain compounds that stimulate microconidia germination of Fol. In general, the effects of root exudates from non-host plants did not differ considerably from those of tomato. The ability of phenolic compounds to inhibit germination of Fol seems not to be plant-specific.
Autor*innen der BOKU Wien:
Prinz-Mammerler Roswitha
Steinkellner Siegrid
Vierheilig Horst
BOKU Gendermonitor:


Find related publications in this database (Keywords)
Fusarium oxysporum f. sp lycopersici
root exudates
tomato
spore germination
phenolic compounds


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