| Legend |
|---|
| Justification for qualification based on EPPO PM 4 Standards |
| Justification for disqualification |
| Additional or non-conclusive information |
| Standard text |
NAME OF THE ORGANISM: Raspberry yellow spot agent (RYS000)
GENERAL INFORMATION ON THE PEST
Name as submitted in the project specification (if different):
Pest category:
Viruses and viroids
1- Identity of the pest/Level of taxonomic listing:
Is the organism clearly a single taxonomic entity and can it be adequately distinguished from other entities of the same rank?
?
Is the pest defined at the species level or lower?:
No
Can listing of the pest at a taxonomic level higher than species be supported by scientific reasons or can species be identified within the taxonomic rank which are the (main) pests of concern?
- Null: Fruits (including hops) sector
If necessary, please list the species:
-
Is it justified that the pest is listed at a taxonomic rank below species level?
Not relevant
Conclusion:
- Not candidate: Fruits (including hops) sector
Justification (if necessary):
Phantom agents have been associated with symptomatic plants and diseases of unknown etiology. Most phantom agents are presumed to be of viral nature, yet (i) neither infected plant material nor reference isolates are available, and (ii) no sequence information is accessible, Raspberry yellow spot virus fulfils these criteria (Tzanetakis et al., submitted).
Raspberry yellow spot virus: Raspberry yellow spot virus was described in a single report from Poland where the foliage was covered with irregular yellow spots that differed in size and leaf blade coverage (Basak, 1974). The agent was transmissible by the large European raspberry aphid Amphorophora idaei and grafting. Given the symptom similarity and the A. idaei transmission, raspberry yellow spot virus could be an isolate of raspberry leaf mottle virus (Tzanetakis et al., submitted).
Remark: in responses to the questionnaire, no country supported its recommendation for regulation as an RNQP. ES, EUROSEEDS, LT and NL supported delisting from EU regulation (no clear identity, no isolate).
Raspberry yellow spot virus: Raspberry yellow spot virus was described in a single report from Poland where the foliage was covered with irregular yellow spots that differed in size and leaf blade coverage (Basak, 1974). The agent was transmissible by the large European raspberry aphid Amphorophora idaei and grafting. Given the symptom similarity and the A. idaei transmission, raspberry yellow spot virus could be an isolate of raspberry leaf mottle virus (Tzanetakis et al., submitted).
Remark: in responses to the questionnaire, no country supported its recommendation for regulation as an RNQP. ES, EUROSEEDS, LT and NL supported delisting from EU regulation (no clear identity, no isolate).
2 – Status in the EU:
Is this pest already a quarantine pest for the whole EU?
No
Presence in the EU:
List of countries (EPPO Global Database):
-
Conclusion:
Justification (if necessary):
HOST PLANT N°1: Rubus (1RUBG) for the Fruits (including hops) sector.
Origin of the listing:
Commission Implementing Directive (EU) 2014/98/EU and Commission Implementing Regulation (EU) 2019/2072
Plants for planting:
Plants intended for planting
3 - Is the pest already listed in a PM4 standard on the concerned host plant?
Yes
Conclusion:
Justification (if necessary):
EPPO Standard PM 4-10 Certification scheme for Rubus recommends testing for 'Raspberry yellow spot disease'. However, further assessment was performed in relation to taxonomy.
4 - Are the listed plants for planting the main* pathway for the "pest/host/intended use" combination? (*: significant compared to others):
Conclusion:
Justification:
5 - Economic impact:
Are there documented reports of any economic impact on the host?
Justification:
What is the likely economic impact of the pest irrespective of its infestation source in the absence of phytosanitary measures? (= official measures)
Is the economic impact due to the presence of the pest on the named host plant for planting, acceptable to the propagation and end user sectors concerned?
Is there unacceptable economic impact caused to other hosts (or the same host with a different intended use) produced at the same place of production due to the transfer of the pest from the named host plant for planting?
Conclusion:
Justification:
Data on pathogen, disease etiology and economic damage not sufficient.
6 - Are there feasible and effective measures available to prevent the presence of the pest on the plants for planting at an incidence above a certain threshold (including zero) to avoid an unacceptable economic impact as regards the relevant host plants?
Conclusion:
Justification:
7- Is the quality of the data sufficient to recommend the pest to be listed as a RNQP?
Conclusion:
Justification:
CONCLUSION ON THE STATUS:
Disqualified: phantom agent with unclear taxonomy
8 - Tolerance level:
Is there a need to change the Tolerance level:
Yes
Proposed Tolerance levels:
Delisting
9 - Risk management measures:
Is there a need to change the Risk management measure:
Yes
Proposed Risk management measure:
Delisting
REFERENCES:
- Basak W (1974) Yellow spot: a virus disease of raspberry. Bulletin of the Polish Academy of Sciences, 22, pp.47-51.
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