Department for Environment, Food & Rural Affairs

Department
for Environment
Food & Rural Affairs

UK Risk Register Details for Hop stunt viroid

This record was last updated on 28/06/2021

Common Names

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citrus gummy bark viroid
grapevine viroid
hop stunt disease
Little leaf of citrus
mulberry vein clearing
peach dapple viroid
plum dapple viroid
Stem pitting of sour orange
Xyloporosis of citrus

PRA Document

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PRA File (2013)

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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Plants for planting (except seeds bulbs and tubers)

Risk Ratings and Current Mitigations

Unmitigated Risks

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Likelihood For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence. See Guidance Document for more Information Likelihood [1 - 5]				4
Entry The Likelihood of movement of the pest into the UK on a pathway and transfer of that pest to a suitable host. See Guidance Document for more Information Entry [1 - 5]				4
Establishment The likelihood of the pest surviving and perpetuating in the UK for the foreseeable future after it has entered. See Guidance Document for more Information Establishment [1 - 5]					5
Spread The rate at which a pest can expand, by natural dispersal only, within an area. See Guidance Document for more Information Spread [1 - 5]		2
Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Impact [1 - 5]				4
Impact - Economic The predicted economic impacts of the pest in the UK. This includes direct effects on yield, quality and possible indirect effects such as trade implications. See Guidance Document for more Information Impact - Economic [1 - 5]				4
Impact - Environmental The proportion of the environmental value of the plant which is likely to be lost through the introduction of the pest. See Guidance Document for more Information Impact - Environmental [1 - 5]	1
Impact - Social The predicted social impacts of a pest in the UK, including effects on tourism, amenities and animal and human health. See Guidance Document for more Information Impact - Social [1 - 5]	1
Value at Risk The value of the hosts or industries at risk from this pest in the UK. See Guidance Document for more Information Value at Risk [1 - 5]			3
Likelihood x Impact The likelihood multiplied by the impact, which shows the risk to the sector. See Guidance Document for more Information Likelihood x Impact [1 - 25]	16
UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information UK Relative Risk Rating [1 - 125]	48

Current Mitigations

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Key mitigation for pest

Regulated non quarantine pest (Northern Ireland). Industry certification scheme for planting material

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

Mitigated Risks

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Likelihood For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence. See Guidance Document for more Information Likelihood [1 - 5]			3
Entry The Likelihood of movement of the pest into the UK on a pathway and transfer of that pest to a suitable host. See Guidance Document for more Information Entry [1 - 5]			3
Establishment The likelihood of the pest surviving and perpetuating in the UK for the foreseeable future after it has entered. See Guidance Document for more Information Establishment [1 - 5]				4
Spread The rate at which a pest can expand, by natural dispersal only, within an area. See Guidance Document for more Information Spread [1 - 5]		2
Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Impact [1 - 5]				4
Impact - Economic The predicted economic impacts of the pest in the UK. This includes direct effects on yield, quality and possible indirect effects such as trade implications. See Guidance Document for more Information Impact - Economic [1 - 5]				4
Impact - Environmental The proportion of the environmental value of the plant which is likely to be lost through the introduction of the pest. See Guidance Document for more Information Impact - Environmental [1 - 5]	1
Impact - Social The predicted social impacts of a pest in the UK, including effects on tourism, amenities and animal and human health. See Guidance Document for more Information Impact - Social [1 - 5]	1
Value at Risk The value of the hosts or industries at risk from this pest in the UK. See Guidance Document for more Information Value at Risk [1 - 5]			3
Likelihood x Impact The likelihood multiplied by the impact, which shows the risk to the sector. See Guidance Document for more Information Likelihood x Impact [1 - 25]	12
UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information UK Relative Risk Rating [1 - 125]	36

Proposed Actions

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Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Distribution and Pest Details

Distribution

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Country / Territory		Status
Europe		Present
	Austria	Present
	Finland	Present
	Netherlands	Present
	United Kingdom	Absent
	France	Present
	Spain	Present
	Portugal	Present
	Italy	Present
	Cyprus	Present
	Czech Republic	Present
	Greece	Present
	Serbia	Present
North America		Present
	United States	Present (Limited)
South America		Present
	Suriname	Present
	Argentina	Present
	Brazil	Present
	Colombia	Present
	Ecuador	Present
	Venezuela	Present
Oceania
	New Zealand	Present
Africa		Present
	Algeria	Present
	Egypt	Present
	Morocco	Present
	South Africa	Present
	Sudan	Present
	Tunisia	Present
	Nigeria	Present
Asia
	Israel	Present
	China	Present
	India	Present
	Iran	Present
	Japan	Present
	Jordan	Present
	South Korea	Present
	Lebanon	Present
	Philippines	Present
	Saudi Arabia	Present
	Syria	Present
	Thailand	Present
	Yemen	Present
Central America
	Jamaica	Present
	Trinidad and Tobago	Present

Type of Pest

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Virus or Viroid

Host or Industry at Risk

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Humulus lupulus, Prunus, Cucumis

Major Hosts

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Citrus limon (Linnaeus) N.L.Burman
Citrus paradisi Macfadyen
Citrus reticulata (s.l.)
Citrus sinensis (Linnaeus) Osbeck
Cucumis sativus L.
Ficus carica L.
Fortunella Swing.
Fragaria ananassa (F. x ananassa) Duch.
Hibiscus rosa-sinensis Linnaeus
Humulus lupulus L.
Malus Mill.
Poncirus Rafin.
Prunus armeniaca L.
Prunus avium ssp./var. avium L.
Prunus domestica ssp. domestica L.
Prunus domestica ssp. insititia L.
Prunus dulcis (Mill.) D.A.Webb
Prunus mume Sieb. & Zucc.
Prunus persica Batsch
Punica granatum L.
Pyrus communis L.
Vitis vinifera L.
Ziziphus mauritiana Lam.
Citrus

Threats to Protected Cultivation

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Both protected crops and outdoor production

Forest Tree Pests and Pathogens

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Further Information

PRA

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PRA Availability

UK (2014)

Regulation and EPPO listing

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Regulated non quarantine pest (Northern Ireland)

Actions Indicated

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Action

No statutory action in Great Britain. Statutory action in line with regulations for Northern Ireland. Benefits of certification in maintaining disease freedom to be publicised.

General Comments

Pest of hops present in America and parts of Europe. PHPS provides good assurance of disease freedom.

Risk Records for this Pest

Hop stunt viroid [SELECTED]

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Department for Environment, Food & Rural Affairs

Departmentfor EnvironmentFood & Rural Affairs

UK Risk Register Details for Hop stunt viroid

Common Names

PRA Document

Scenario and Pathways

Scenario for Risk Register

Pathway Assessed for Entry to UK

Common Pathways

Risk Ratings and Current Mitigations

Unmitigated Risks

Current Mitigations

Key mitigation for pest

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

Mitigated Risks

Proposed Actions

Proposed Actions

Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Distribution and Pest Details

Distribution

Type of Pest

Host or Industry at Risk

Major Hosts

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA

PRA Availability

Regulation and EPPO listing

Actions Indicated

Action

General Comments

Risk Records for this Pest

Department
for Environment
Food & Rural Affairs