European Journal of Forest Pathology (1998) 28, 399-407

J. Diez and L. Gil (1998)
Effects of Ophiostoma ulmi and Ophiostoma novo-ulmi culture filtrates on elm cultures from genotypes with different susceptibility to Dutch elm
European Journal of Forest Pathology 28 (6), 399-407
Abstract: Cell cultures of callus tissue cultures obtained from four elm genotypes (Ulmus minor; Ulmus minor × Ulmus pumila; [Ulmus carpinifolia × Ulmus glabra] × [Ulmus wallichiana × Ulmus glabra]; and Ulmus pumila), either susceptible or resistant to Dutch elm disease (DED) were exposed to culture filtrates of Ophiostoma ulmi and Ophiostoma novo-ulmi. Elm cells were largely affected by crude culture filtrate incorporated into the media. However, the correlation between `in vivo ' cell resistance and growth in the presence of culture filtrate was poor: the effects of fungal media components were greater than that exerted by fungal exotoxins. Therefore, it is concluded that these `in vitro ' assays cannot be used to evaluate resistance sources to DED in elms, or to assess specific pathogenicity of fungal isolates.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Julio Diez, Luis Gil

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Ophiostoma ulmi	Elm (Ulmus)
	Ophiostoma novo-ulmi	Elm (Ulmus)