Pest risk assessment of the Cucumber green mottle

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07/207-4 Finalbefore starting a new cucumber crop. 9) There is a moderate level of uncertainty regarding thepathway for entry of CGMMV into the PRA area. There is a low degree of uncertaintyregarding the pathogen, its survival and its possibility for transmission, establishment andspread in Norwegian greenhouse cucumber production. There is a high degree of uncertaintyabout whether CGMMV is able to become established and spread in field cucumbercultivation in the PRA area. The degree of uncertainty is moderate regarding the impact andeconomic lossesKEYWORDSCGMMV, Cucumber green mottle mosaic virus, cucumber, intensive greenhouse production,additional artificial light, yield lossASSESSED BYPersons working for the Norwegian Scientific Committee for Food Safety(Vitenskapskomiteen for mattrygghet, VKM), either as appointed members of the Committeeor as ad hoc-experts, do this by virtue of their scientific expertise, not as representatives forhis/her employers. The Civil Services Act instructions on legal competence apply for all workprepared by VKM.Panel 9:May Bente Brurberg, Trond Hofsvang, Christer Magnusson, Trond Rafoss, Leif Sundheim(chair), Brita Toppe, Anne Marte Tronsmo, and Bjørn Økland.Scientific coordinator from the secretariat: Elin ThingnæsACKNOWLEDGEMENTSVKM has asked the Norwegian Institute for Agricultural and Environmental Research(Bioforsk), Plant Health and Plant Protection Division, to make a draft pest risk assessment(PRA) report on Cucumber green mottle mosaic virus in Norway. VKM has used this report(Blystad et al. 2008) as a basis to answer the request from the Norwegian Food SafetyAuthority.Dag-Ragnar Blystad, Brita Toppe and Trond Rafoss are acknowledged for their valuable workwith the draft PRA report.Norwegian Scientific Committee for Food Safety 2
07/207-4 FinalCONTENTS1. Background ........................................................................................................................ 52. Terms of reference ............................................................................................................. 53. Initiation ............................................................................................................................. 63.1. Initiation points ........................................................................................................... 63.1.1. PRA initiated by the review or revision of a policy............................................. 63.2. Identification of PRA area........................................................................................... 63.3. Information.................................................................................................................. 63.3.1. Previous PRA ....................................................................................................... 63.4. Conclusion of initiation............................................................................................... 64. Pest risk assessment ........................................................................................................... 64.1 Pest categorization........................................................................................................ 64.1.1. Identity of pest, name and taxonomic position .................................................... 64.1.1.1 Name .............................................................................................................. 64.1.1.2 Synonyms ....................................................................................................... 74.1.1.3 Common names.............................................................................................. 74.1.1.4 Taxonomic position........................................................................................ 74.1.1.5 Bayer computer code...................................................................................... 84.1.2 Methods for detection and identification .............................................................. 84.1.2.1 Symptoms in cucumber.................................................................................. 84.1.2.2 Test plants ...................................................................................................... 94.1.2.3 Electron microscopy....................................................................................... 94.1.2.4 Serology ....................................................................................................... 104.1.2.5 Nucleic acid based methods ......................................................................... 104.1.3 Occurrence in Europe.......................................................................................... 104.1.4 Presence or absence in PRA area ........................................................................ 114.1.5 Cases of CGMMV in Norway during 2007 ........................................................ 114.1.5.1 Grower A...................................................................................................... 114.1.5.2 Grower B...................................................................................................... 134.1.5.3 Grower C...................................................................................................... 144.1.5.4 Grower D...................................................................................................... 144.1.6 Regulatory status................................................................................................. 154.1.7 Biological characteristics of the pest................................................................... 154.1.7.1 Interaction host/pest ..................................................................................... 154.1.7.2 Disease cycle................................................................................................ 154.1.7.3 Dissemination............................................................................................... 164.1.7.4 Survival ........................................................................................................ 164.1.7.5 Control.......................................................................................................... 164.1.8 Potential for establishment and spread in PRA area ........................................... 164.1.9 Potential for economic consequences in PRA area............................................. 174.1.9.1 Norwegian cucumber production................................................................. 174.1.9.2 Potential for economic consequences .......................................................... 184.1.10 Conclusion of pest categorization ..................................................................... 194.2. Assessment of the probability of introduction and spread ........................................ 194.2.1 Probability of entry of the pest............................................................................ 194.2.1.1 Identification of pathways............................................................................ 194.2.1.2 Probability of the pest being associated with the pathway at origin ............ 204.2.1.3 Probability of survival during transport or storage ...................................... 20Norwegian Scientific Committee for Food Safety 3
Page 1: 07/207-4 FinalOpinion of the Panel
Page 7 and 8: 07/207-4 Final4.1.1.2 SynonymsCucum
Page 9 and 10: 07/207-4 FinalFigure 1. Symptoms of
Page 11 and 12: 07/207-4 FinalThe situation in othe
Page 14 and 15: 07/207-4 FinalA new cucumber cultur
Page 16 and 17: 07/207-4 Final4.1.7.3 Dissemination
Page 18 and 19: 07/207-4 FinalGreenhouse cucumber(s
Page 20 and 21: 07/207-4 FinalPeopleThe grower, con
Page 22 and 23: 07/207-4 Final• Use of milk (dipp
Page 24 and 25: 07/207-4 Final- Outbreaks are manag
Page 26 and 27: 07/207-4 Finaland periods with no p
Page 28: 07/207-4 FinalNilsson B. 1977. Unde

Pest risk assessment of the Cucumber green mottle

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