Regulated non-quarantine pest Project

An EU funded project for the benefit of the whole EPPO region

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NAME OF THE ORGANISM: Chrysanthemum stunt viroid (CSVD00)


GENERAL INFORMATION ON THE PEST

Name as submitted in the project specification (if different to the preferred name):
 

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?
 
Yes

Is the pest defined at the species level or lower?:
 
Yes

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?
 
  • Not relevant: Ornamental sector
Is it justified that the pest is listed at a taxonomic rank below species level?
 
Not relevant

Conclusion:
 
  • Candidate: Ornamental sector
2 – Status in the EU:
 
Is this pest already a quarantine pest for the whole EU?
 
No

Presence in the EU:
 
Yes

List of countries (EPPO Global Database):
 
Belgium (2014); Czech Republic (2010); Germany (1993); Italy (2011); Italy/Sicilia (1994); Netherlands (2015); Poland (1992); Slovenia (2010); Sweden (1993); United Kingdom (1993); United Kingdom/England (1994)

Conclusion:
 
candidate

Justification (if necessary):
 
Data of the presence of this pest on the EU territory are available in EPPO Global Database (https://gd.eppo.int/).

HOST PLANT N°1: Chrysanthemum (Dendranthema) (1DDMG) for the Ornamental sector.


Origin of the listing:
 
IIA2AWG

Plants for planting:
 
Plants intended for planting, other than seeds


3 - Is the pest already listed in a PM4 standard on the concerned host plant?
 
Yes
 
Conclusion:
 
Qualified


CONCLUSION ON THE STATUS:
 
Recommended for listing as an RNQP - based on EPPO PM 4 Standard. Experts also recommended extrapolating this evaluation to Argyranthemum.


8 - Tolerance level:

Is there a need to change the Tolerance level:
 
No

Proposed Tolerance levels:
 
Zero tolerance based on the testing of propagation stock.

9 - Risk management measures:

Is there a need to change the Risk management measure:
 
Yes

Proposed Risk management measure:
 
Plants are derived within three generations of propagation from stock which has been found to be free from Chrysanthemum stunt viroid by testing.

Justification (if necessary):
 
Producers do not let mother plants flowering and symptoms are only visible on flowers. Therefore visual examination is not adapted to this pest. These risk management measures can be extrapolated to Argyranthemum.

REFERENCES: