UK Risk Register Details for Xylella fastidiosa subsp. pauca and related strains

Common Names

  • Alfalfa dwarf
  • Anaheim disease
  • California vine disease
  • Dwarf disease of alfalfa
  • Dwarf disease of lucerne
  • Leaf scald of oleander
  • Leaf scald of plum
  • Leaf scorch
  • Phony disease of peach
  • Pierce's disease of grapevine
  • Variegated chlorosis of citrus

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] 2
Spread [1 - 5] 3
Impact [1 - 5] 2
Value at Risk [1 - 5] 4
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 16

Current Mitigations

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Key mitigation for pest

EU regulated pest

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 3
Impact [1 - 5] 3
Value at Risk [1 - 5] 4
Likelihood x Impact [1 - 25] 6
UK Relative Risk Rating [1 - 125] 24

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
Italy Present (Limited) pauca related strain
North America
Costa Rica Present
South America
Argentina Present
Brazil Present
Paraguay Present

Type of Pest

  • Bacterium

Host or Industry at Risk

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Prunus

Major Hosts

  • Acacia saligna (Labill.) H.L.Wendl.
  • Asparagus acutifolius L.
  • Catharanthus G.Don
  • Chenopodium album L.
  • Cistus L.
  • Coffea L.
  • Eremophila maculata (Ker) F.V.Muell.
  • Erigeron bonariensis L.
  • Euphorbia terracina L.
  • Grevillea sulphurea A.Cunn.
  • Heliotropium europaeum L.
  • Laurus nobilis L.
  • Lavandula L.
  • Myoporum Banks & Soland. Ex G.Forst.
  • Myrtus communis L.
  • Nerium oleander L.
  • Olea europaea ssp. europaea L.
  • Phillyrea latifolia L.
  • Polygala myrtifolia L.
  • Prunus L.
  • Prunus avium ssp./var. avium L.
  • Prunus dulcis var. dulcis (Mill.) D.A.Webb
  • Rhamnus alaternus L.
  • Rosmarinus officinalis L.
  • Spartium junceum L./Lam.
  • Vinca L.
  • Westringia Sm.
  • Westringia fruticosa (Willd.) Druce
  • Woody plants
  • Citrus

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Broadleaved

Further Information

PRA Availability

UK (2014), EFSA (2015)

EU and EPPO Listing

ECIAI, EPPO A1, Commission Implementing Decision 2015/789

Actions Indicated

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Action

Statutory action against findings.

General Comments

A bacterial disease with a wide host range causing substantial damage to olive production in the south of Italy. The priority is to prevent further spread from that area through robust EU regulation. This subspecies is unlikely to be able to thrive in the UK, but should an outbreak occur there would be a need for eradication action which would result in environmental and social impacts.