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Chalara research

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Ash dieback, a devastating disease, has been responsible for destroying vast numbers of ash trees in continental Europe and Scandinavia since 1992. Caused by a fungus, three names have been in use for the causal agent of this disease, initially Chalara fraxinea, then Hymenoscyphus pseudoalbidus, but the name Hymenoscyphus fraxineus is now being used widely.

Affected_trees_in_Kent.jpgThe disease was first identified in the UK in 2012. Since then it has been found at hundreds of sites throughout Britain and Ireland,  although initially well over half of the findings were associated with trees planted during the previous 5 or 6 years, suggesting that plant trade has aided the arrival of this disease.

It is likely that resistance to ash dieback will evolve in the UK ash population over time through natural selection. This poses an important challenge for forest scientists: how to understand and accelerate this process so that the UK’s ash population can recover much more rapidly.

Current projects

What's of interest

FRAXBACK COST Action: Understanding Fraxinus dieback in Europe and elaborating guidelines for sustainable management

Open Ash dieback: A hub for crowdsourcing information and genomic resources for Ash Dieback

Nornex: Tackling ash dieback

Related pages

Research Status
current
Research Groups
Tree health

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