European Journal of Forest Pathology (1995) 25, 307-315

M.L. Sutherland, L. Mittempergher and C.M. Brasier (1995)
Control of Dutch elm disease by induced host resistance
European Journal of Forest Pathology 25 (6-7), 307-315
Abstract: A range of fungi was screened for the ability to suppress symptoms of Dutch elm disease in European and hybrid elms under UK and Italian field conditions. The efficacy of the preventative inoculations varied Considerably between elm clones of differing resistance to the causal fungus Ophiostoma novoulmi. On susceptible English elm, Ulmus procera, preventative inoculations with conidia of Verticillium dahlias, Opbiostoma ulmi or Ophiostoma piceae (OPH form) caused no reduction in final disease levels. On U. x bollandica cv.'Commelin', pretreatment with V. dabliae or O. ulmi reduces final disease levels, but not significantly, On the elm clone Ca06 of U. carpinifolia, and on the hybrid clones FL025 and 196-6, significant (p0.05) symptom suppression occurred in trees pretreated with O. ulmi or V. dahliae. On the more resistant elm clones 3-14 and Lobel, only V. dahliae was an effective pretreatment (p0.05). Certain pretreatment fungi alone caused symptoms in some of the elm clones. Major difficulties in using this approach to control Dutch elm disease are discussed.
(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): Clive M. Brasier

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 novo-ulmi	Elm (Ulmus)	United Kingdom