UK Risk Register Details for 'Candidatus Phytoplasma fraxini'

This record was last updated on 07/05/2020

Common Names

  • Ash yellows

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)

Common Pathways

  • show / hide
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

  • show / hide

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

  • show / hide

Broadleaved trees

Major Hosts

  • Acacia melanoxylon R.Br.
  • Croton L.
  • Eugenia L.
  • Fraxinus americana L.
  • Fraxinus angustifolia ssp. angustifolia Vahl
  • Fraxinus bungeana A.Dc.
  • Fraxinus excelsior L.
  • Fraxinus latifolia Benth.
  • Fraxinus nigra Marsh.
  • Fraxinus ornus L.
  • Fraxinus quadrangulata Michx.
  • Fraxinus syriaca Boiss.
  • Fraxinus tomentosa Michx.F.
  • Fraxinus uhdei (Wenzig) Lingelsh.
  • Fraxinus velutina Torr.
  • 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 diversifolia (S. x diversifolia) Rehd.
  • Syringa henryi (S. x henryi) Schneid.
  • Syringa josiflexa (S. x josiflexa) Preston
  • Syringa josikaea Jacq.F. Ex Reichb.
  • Syringa komarowii Schneid.
  • Syringa laciniata Mill.
  • Syringa meyeri Schneid.
  • Syringa nanceiana ( s. x nanceiana) Mckelvey
  • Syringa oblata Lindl.
  • Syringa persica (S. x persica) L.
  • Syringa pubescens Turcz.
  • Syringa sweginzowii Koehne & Lingelsh.
  • Syringa tomentella Bur. & Franch.
  • Syringa villosa Vahl
  • Syringa vulgaris L.
  • Syringa yunnanensis Franch.
  • Vitis vinifera ssp. vinifera L.
  • Fraxinus pennsylvanica
  • Quercus humboldtii Bonpl.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Broadleaved

Further Information

PRA Availability

UK (2016)

Regulation and EPPO listing

  • show / hide

Not currently listed

Actions Indicated

  • show / hide

Action

Statutory action on findings.

General Comments

Pathogen causing phytoplasma disease of certain tree species in the Americas. Regulation of hosts already provides some mitigation.