Determining invasiveness and risk of Dothistroma (DIAROD)


Diarod logoThe aim of the DIAROD COST Action is to synthesize knowledge, encourage collaborative research to address the key questions, determine future research priorities, and use the resulting information to develop management strategies applicable to this evolving disease and other future disease threats.

Dothistroma needle blight (DNB) is an economically important tree disease caused by two fungal pathogens, Dothistroma septosporum and Dothistroma pini. Although the disease has been a problem in the southern hemisphere for many years, only recently has it caused significant damage to plantations and natural forest ecosystems in Europe. The biosecurity implications relating to this recent upsurge are unclear, and this has raised a number of important questions:

  • Are these fungi recently introduced, or is it that they are changing in behaviour, possibly due to changing climatic conditions?
  • Alternatively, is the dramatic increase in disease intensity and geographical and host range due to the introduction of more aggressive strains?
  • Is this situation likely to worsen, or maybe improve under future management and climate change scenarios?
  • What are the most suitable management strategies?

This Action, DIAROD, plans to build on the foundations of the International Dothistroma Alliance (IDA), established in 2006 to help combat the new problems faced due to this disease.


The project is divided into the following working groups:

  • Working Group 1: The pathogen - defining the current disease situation
  • Working Group 2: The environment: determining the risk of DNB
  • Working Group 3: The host: resistance and susceptibility
  • Working Group 4: Identifying research gaps and dissemination.

Working groups in detail

Funders and partners

EU flag
This programme is funded by the European Union - EU COST Action FP1102.


Forest Research involvement

Dr Anna Brown is the Chair of the COST Action.


The project started in December 2011 and continues until December 2015.


For further information, please contact:


Dr Anna Brown

Vice Chair

Dr Libor Jankovsky
Mendel University in Brno