title: 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.
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.
authors.affiliation: Institut für Pflanzenschutz (DAPP), Universität für Bodenkultur Wien, Peter Jordan-Str. 82, 1190 Vienna, Austria.
authors.forename: Siegrid
authors.initials: S
authors.lastname: Steinkellner
authors.forename: Karin
authors.initials: K
authors.lastname: Hage-Ahmed
authors.forename: Jose M
authors.initials: JM
authors.lastname: García-Garrido
authors.forename: Antonio
authors.initials: A
authors.lastname: Illana
authors.forename: Juan A
authors.initials: JA
authors.lastname: Ocampo
authors.forename: Horst
authors.initials: H
authors.lastname: Vierheilig
mesh_terms: D005670:Fusarium / Q000472:pathogenicity / Q000502:physiology*; D055137:Glomeromycota / Q000502:physiology*; D018551:Solanum lycopersicum / Q000382:microbiology*; D038821:Mycorrhizae / Q000502:physiology*; D010935:Plant Diseases / Q000382:microbiology*; D013559:Symbiosis