UK Risk Register Details for Candidatus Phytoplasma fraxini

Common Names

  • Ash yellows

Scenario and Pathways

Scenario for Risk Register

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  • Pest is introduced

Pathway Assessed for Entry to UK

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  • Plants for planting (except seeds bulbs and tubers)

Common Pathways

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This section is currently being developed as part of the next phase of the Risk Register.

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 3
Impact [1 - 5] 4
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 12
UK Relative Risk Rating [1 - 125] 60

Current Mitigations

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Key mitigation for pest

Prohibition of key pathway

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 3
Impact [1 - 5] 4
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 8
UK Relative Risk Rating [1 - 125] 40

Proposed Actions

Proposed Actions

Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Distribution and Pest Details

Distribution

Country Status Notes
Europe
United Kingdom Absent
North America
Canada Present (Limited)
United States Present (Limited)
South America
Chile Present (Limited)
Colombia Present (Limited)

Type of Pest

  • Phytoplasma

Host or Industry at Risk

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Broadleaved trees

Major Hosts

  • Acacia melanoxylon R.Br.
  • Croton L.
  • Eugenia L.
  • Fraxinus L.
  • Gaultheria phillyreifolia (Pers.) Sleum.
  • Liquidambar styraciflua L.
  • Magnolia grandiflora L.
  • Myrtus ugni Molina
  • Paeonia L.
  • Pittosporum undulatum Vent.
  • Populus nigra L.
  • Prunus persica Batsch
  • Syringa L.
  • Vitis vinifera ssp. vinifera L.
  • Quercus humboldtii Bonpl.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Broadleaved

Further Information

PRA Availability

UK (2016)

EU and EPPO Listing

Not currently listed

Actions Indicated

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Action

Statutory action on findings.

General Comments

Pathogen causing phytoplasma disease of certain tree species in the Americas. EU regulation already provides some mitigation against the risk of introduction, but could be further strengthened.

Risk Records for this Pest