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

This record was last updated on 01/04/2020

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

  • 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] 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

  • show / hide

Key mitigation for pest

Regulated quarantine 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
South America
Argentina Present
Brazil Present
Paraguay Present
Central America
Costa Rica Present

Type of Pest

  • Bacterium

Host or Industry at Risk

  • show / hide

Prunus

Major Hosts

  • Acacia saligna (Labill.) H.L.Wendl.
  • Amaranthus retroflexus L.
  • Asparagus acutifolius L.
  • Catharanthus G.Don
  • Chenopodium album L.
  • Cistus incanus ssp. creticus L.
  • Coffea L.
  • Dodonaea viscosa (Linnaeus) Jacquin
  • Eremophila maculata (Ker) F.V.Muell.
  • Erigeron bonariensis L.
  • Euphorbia terracina L.
  • Grevillea sulphurea A.Cunn.
  • Heliotropium europaeum L.
  • Hibiscus L.
  • Laurus nobilis L.
  • Lavandula angustifolia Mill.
  • Lavandula stoechas L.
  • Myoporum Banks & Soland. Ex G.Forst.
  • Myrtus communis L.
  • Nerium oleander L.
  • Olea europaea Linnaeus
  • 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.
  • Salvia L.
  • Spartium junceum L./Lam.
  • Vinca L.
  • Westringia fruticosa (Willd.) Druce
  • Woody plants
  • Citrus

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Broadleaved

Further Information

PRA Availability

UK (2020), EFSA (2019)

Regulation and EPPO listing

  • show / hide

Regulated quarantine pest, EPPO A2

Actions Indicated

  • show / hide

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 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.