ORAL PRESENTATION: Breeding of European ash (Fraxinus excelsior) in the face of ash dieback

Submitted by : Fady Bruno
Abstract type : Oral presentation
Session type : Conference session 3: CONSERVING and USING GENETIC DIVERSITY
Author Speaker : Erik Dahl Kjaer

Information about other authors :

Erik Dahl Kjær1, Ditte Christina Olrik2, Lene Rostgaard Nielsen1, Albin Lobo1, Chatchai Kosawang1, Lars Nørgaard Hansen1, Jon Kehlet Hansen1,


1Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958 Frederiksberg C, Denmark

 2Ministry of Environment and Food of Denmark, Nature Agency, Gillelejevej 2B, 3230 Græsted, Denmark

Abstract :

The emerging pathogen Hymenoscyphus fraxineus has caused severe mortality and health decline of common ash (Fraxinus excelsior) across Europe. However, genetic variation in susceptibility to the disease has been observed in several countries. In Denmark, the observation in 2010 lead to initiation of breeding activities with the objective to restore the health of ash trees based on natural genetic variation. The work has involved screening of ash stands and selection of healthy trees, selection in existing seed orchards, establishment of new seed orchards, controlled crosses of tolerant trees and establishment of progeny trials. The work has also included various supportive research to understand the host-pathogen interaction. Based on findings from this work, we discuss from a general perspective how and if breeding activities based on evolutionary approaches can improve the ability to handle emerging infectious diseases.

Bibliografic references :

Keywords : emerging infectious diseases, Ash Dieback, Fraxinus excelsior