A comparison of wild-type, old and modern tomato cultivars in the interaction with the arbuscular mycorrhizal fungus Glomus mosseae and the tomato pathogen Fusarium oxysporum f. sp. lycopersici |
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Authors: | Steinkellner Siegrid Hage-Ahmed Karin García-Garrido Jose M Illana Antonio Ocampo Juan A Vierheilig Horst |
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Institution: | (1) Institut f?r Pflanzenschutz (DAPP), Universit?t f?r Bodenkultur Wien, Peter Jordan-Str. 82, 1190 Vienna, Austria;(2) Departamento de Microbiolog?a de Suelos, Estaci?n Experimental del Zaid?n, CSIC, 18008 Granada, Spain; |
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Abstract: | The effect of the arbuscular mycorrhizal symbiosis (AM) varies in plant cultivars. In the present study, we tested whether
wild-type, old and modern tomato cultivars differ in the parameters of the AM interaction. Moreover, the bioprotective effect
of AM against the soilborne tomato pathogen Fusarium oxysporum f. sp. lycopersici (Fol) was tested in the different cultivars. Ten tomato cultivars were inoculated with the arbuscular mycorrhizal fungus (AMF)
Glomus mosseae alone or in combination with Fol. At the end of the experiment, AM root colonization, Fusarium infection, and the plant fresh weight was determined. The tomato cultivars differed in their susceptibility to AMF and Fol, but these differences were not cultivar age dependent. In all the cultivars affected by Fol, mycorrhization showed a bioprotective effect. Independent of the cultivar age, tomato cultivars differ in their susceptibility
to AMF and Fol and the bioprotective effect of mycorrhization, indicating that the cultivar age does not affect the AM parameters tested
in this study. |
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