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Promoting resilience of UK tree species
to novel pests and pathogens:
ecological and evolutionary solutions
Tree Health and Plant Biosecurity Initiative
1. Population structure and natural selection in
the Chalara ash dieback fungus
2. Identifying genomic resources in Fraxinus
3. Biological pest control of insect pests that threaten
tree health
4. New approaches for the early detection of tree health
pests and pathogens
5. Promoting resilience of UK tree species to novel pests
and pathogens: ecological and evolutionary solutions
6. Modelling economic impact of strategies to increase
resilience against tree disease outbreaks
7. Understanding public risk concerns: social perception,
interpretation and communication of tree health risks
Tree Health and Plant Biosecurity Initiative
1. Population structure and natural selection in
the Chalara ash dieback fungus
2. Identifying genomic resources in Fraxinus
3. Biological pest control of insect pests that threaten
tree health
4. New approaches for the early detection of tree health
pests and pathogens
5. Promoting resilience of UK tree species to novel pests
and pathogens: ecological and evolutionary solutions
6. Modelling economic impact of strategies to increase
resilience against tree disease outbreaks
7. Understanding public risk concerns: social perception,
interpretation and communication of tree health risks
ASH DIEBACK
Tree Health and Plant Biosecurity Initiative
1. Population structure and natural selection in
the Chalara ash dieback fungus
ASH DIEBACK
2. Identifying genomic resources in Fraxinus
3. Biological pest control of insect pests that threaten
tree health
4. New approaches for the early detection of tree health
pests and pathogens
5. Promoting resilience of UK tree species to novel pests
and pathogens: ecological and evolutionary solutions
6. Modelling economic impact of strategies to increase
resilience against tree disease outbreaks
7. Understanding public risk concerns: social perception,
interpretation and communication of tree health risks
METHODS
Tree Health and Plant Biosecurity Initiative
1. Population structure and natural selection in
the Chalara ash dieback fungus
ASH DIEBACK
2. Identifying genomic resources in Fraxinus
3. Biological pest control of insect pests that threaten
tree health
METHODS
4. New approaches for the early detection of tree health
pests and pathogens
5. Promoting resilience of UK tree species to novel pests
and pathogens: ecological and evolutionary solutions
6. Modelling economic impact of strategies to increase
resilience against tree disease outbreaks
7. Understanding public risk concerns: social perception,
interpretation and communication of tree health risks
TREE SPECIES
Tree Health and Plant Biosecurity Initiative
1. Population structure and natural selection in
the Chalara ash dieback fungus
ASH DIEBACK
2. Identifying genomic resources in Fraxinus
3. Biological pest control of insect pests that threaten
tree health
METHODS
4. New approaches for the early detection of tree health
pests and pathogens
5. Promoting resilience of UK tree species to novel pests
and pathogens: ecological and evolutionary solutions
6. Modelling economic impact of strategies to increase
resilience against tree disease outbreaks
7. Understanding public risk concerns: social perception,
interpretation and communication of tree health risks
TREE SPECIES
SOCIAL &
ECONOMIC
FACTORS
Tree Health and Plant Biosecurity Initiative
1. Population structure and natural selection in
the Chalara ash dieback fungus
ASH DIEBACK
2. Identifying genomic resources in Fraxinus
3. Biological pest control of insect pests that threaten
tree health
METHODS
4. New approaches for the early detection of tree health
pests and pathogens
5. Promoting resilience of UK tree species to novel pests
and pathogens: ecological and evolutionary solutions
6. Modelling economic impact of strategies to increase
resilience against tree disease outbreaks
7. Understanding public risk concerns: social perception,
interpretation and communication of tree health risks
TREE SPECIES
SOCIAL &
ECONOMIC
FACTORS
Tree species
Extended phenotype
Organisms associated with tree
Phenotype
All measurable traits
of a tree
Genotype
Genetics of an
individual tree
varies with
genotype,
environment
varies with
genotype,
environment
Rationale
Want to protect species, but:
•
•
•
Many different known pests / diseases
Unknown threats
Changing conditions
Rationale
Want to protect species, but:
•
•
•
Many different known pests / diseases
Unknown threats
Changing conditions
So, increase resilience:
•
Reduce susceptibility:
•
Increase number of resistant genotypes
 allow adaptation
•
Reduce tree stress
 Match tree to environment
•
Find ways to manage this
PROTREE Objectives
Using Scots pine as a case study
1. Identify variation in 3 key threat
species:
•
•
•
Present, widespread
Present, localised
Not present, potential
2. Measure variation in host tree
species.
3. Find management options for
increasing resilience.
Experiment 1: Evolution of Dothistroma
Needle Blight (DNB)
Photo: Annika Perry
Experiment 2: Variation in resistance to
DNB in Scots Pine
Photo: Annika Perry
Experiment 3: Variation in resistance to
Pine pitch canker in Scots Pine
Photo: Steve Woodward
Experiment 4: Variation in resistance to
Pinetree Lappet Moth in Scots Pine
© Crown Copyright Forestry Commission
Experiment 5: Genetic diversity in Scots
pine
Scots pine
common garden
experiment
INVEREWE
21 source populations
3 planting sites
GLENSAUGH
YAIR
YAIR
Warm
Dry
Figure: Glenn Iason