Pest categorisation of Beet curly top virus (non‐EU isolates)

Jeger, Michael; Bragard, Claude; Caffier, David; Dehnen‐Schmutz, Katharina; Gilioli, Gianni; Grégoire, Jean‐Claude; Miret, Josep Anton Jaques; MacLeod, Alan; Navarro, María Navajas; Niere, Björn; Parnell, Stephen; Potting, Roel; Rafoss, Trond; Rossi, Vittorio; Urek, Gregor; Bruggen, Ariena Van; Werf, Wopke Van der; West, Jonathan; Chatzivassiliou, Elisavet; Winter, Stephan; Holló, Gábor; Candresse, Thierry

doi:10.2903/j.efsa.2017.4998

Cited by 4 publications

(2 citation statements)

References 21 publications

(52 reference statements)

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“…()Beet curly top virusBCTVReported in several countries outside the EU. Reported in two MSs, but considered absent with uncertainty from the EU territory (EFSA PLH Panel, 2017)Might be present, but not reported in additional EU MSsReported on potato, without specification of Solanum speciesNo, previously addressed by EFSA PLH Panel ()EPPO (online), Jones et al. (), Pourrahim et al.…”

Section: Appendix a – Viruses And Viroids Of Potato Considered As Non‐eumentioning

confidence: 99%

List of non‐EU viruses and viroids infecting potato (Solanum tuberosum) and other tuber‐forming Solanum species

Bragard¹,

Dehnen‐Schmutz²,

Gonthier³

et al. 2020

EFS2

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The European Commission requested a pest categorisation of the non-EU viruses and viroids of potato (hereafter referred to as viruses). As a first step, a systematic literature and database search was carried out to identify the viruses reported to naturally infect Solanum tuberosum and other tuberforming Solanum spp (hereafter referred to as potato). Based on the global distribution and on the prevalence inside the European Union (EU), the Panel identified 40 non-EU viruses known to occur only outside the EU or with only a limited presence in the EU (reported in only one or few Member States (MSs) and/or with restricted distribution, outbreaks). Twenty-seven viruses were identified as having a significant presence in the EU (known to occur in several MSs, frequently reported in the EU, widespread in several MSs) or reported only from the EU so far, and will be excluded from further categorisation in the frame of the present mandate. Five viruses remained with an undetermined standing because the available information did not allow their allocation to one of the above groups. The viruses considered non-EU and those with undetermined standing will be further categorised if not addressed by EFSA in previous scientific opinions. Seven viruses for which non-European isolates are specifically regulated in Annex I of directive 2000/29/EC will be categorised separately. The main knowledge gaps and uncertainties of this grouping concern the natural host status of potato, the taxonomy, and/or information on the geographical distribution and prevalence of some of the analysed viruses.

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Section: Appendix a – Viruses And Viroids Of Potato Considered As Non‐eumentioning

confidence: 99%

List of non‐EU viruses and viroids infecting potato (Solanum tuberosum) and other tuber‐forming Solanum species

Bragard¹,

Dehnen‐Schmutz²,

Gonthier³

et al. 2020

EFS2

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“…The following viruses and viroids have been addressed by EFSA in previous scientific opinions: beet curly top virus (EFSA PLH Panel, 2017), capsicum chlorosis virus (EFSA PLH Panel, 2012a), cherry rasp leaf virus (EFSA PLH Panel, 2013a,b, 2019a, chrysanthemum stunt viroid (EFSA PLH Panel, 2011, 2012b, groundnut bud necrosis virus (EFSA PLH Panel, 2012a), groundnut ringspot virus (EFSA PLH Panel, 2012a), tomato chlorotic spot virus (EFSA PLH Panel, 2012a), tomato planta macho viroid (EFSA PLH Panel, 2011), tomato ringspot virus (EFSA PLH Panel, 2013a, tomato yellow leaf curl virus (EFSA PLH Panel, 2013b, 2014, tomato yellow ring virus (EFSA PLH Panel, 2012a), tomato zonate spot virus (EFSA PLH Panel, 2012a). Following exchange with the European Commission, it was decided that they will not be further considered in the present categorisation.…”

Section: Interpretation Of the Terms Of Referencementioning

confidence: 99%

Pest categorisation of non‐EU viruses and viroids of potato

Bragard¹,

Dehnen‐Schmutz²,

Gonthier³

et al. 2020

EFS2

Self Cite

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Following a request from the EU Commission, the Panel on Plant Health has addressed the pest categorisation of those viruses and viroids (hereafter referred to as viruses) of Solanum tuberosum and other tuber-forming Solanum spp. (hereafter referred to as potato) which are considered to be either non-EU or of undetermined standing based on a previous EFSA opinion. These viruses belong to different families and genera and either have an established identity or produce consistent symptoms. Plants for planting is the main pathway for entry for all categorised viruses as they can all be transmitted by vegetative propagation. Several categorised viruses have a relatively wide host range and/or are vector-transmitted, increasing the potential for entry. The information currently available on geographical distribution, biology, epidemiology, impact and potential entry pathways has been evaluated with regard to the criteria to qualify as potential Union quarantine pest or as Union regulated non-quarantine pest (RNQP). Since this opinion addresses specifically the non-EU potato viruses, in general these viruses do not meet the criteria assessed by EFSA to qualify as potential Union regulated non-quarantine pests. The following viruses meet the criteria to qualify as potential Union quarantine pest: APLV, APMMV, APMoV, ChiLCV, CYSDV, PAMV, PBRSV, PVH, PVP, PVT, PYDV, PYMV, PYV, PYVV, RCVMV, SALCV, SB26/29, ToCV, ToLCNDV, ToMHaV, ToMoTV, ToSRV and ToYVSV. With the exception of the criterion regarding the potential for consequences in the EU territory, for which the Panel is unable to conclude because of lack of information, AVB, CPSbV, PaLCrV, PapMV, PVB, PVU, SB41 and TVBMV meet all the other criteria to qualify as potential Union quarantine pest. PotLV and WPMV do not qualify as potential Union quarantine pest, since they are not reported to have any impact. For most of the categorised viruses, the conclusions of the Panel have inherent uncertainties, due to the lack of quantitative data on their impact and/or absence or limited availability of information on the biology, epidemiology and geographical distribution.

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Pest categorisation of Beet curly top virus (non‐EU isolates)

Jeger¹,

Bragard²,

Caffier³

et al. 2017

EFS2

Self Cite

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The EFSA Panel on Plant Health performed a pest categorisation of non-EU isolates of Beet curly top virus (BCTV) for the European Union territory. The virus causes severe diseases in beet, tomatoes and pepper crops, occurs predominantly in warm and dry zones and is reported from many countries outside the EU in particular from western USA and Mexico. New data from complete virus genomes make BCTV a well characterised virus species of which currently 11 strains are known and for which diagnostic methods are available. BCTV has a very broad host range of more than 300 species some of which may remain symptomless. Aside from vegetative propagation of infected plants, the only mode of BCTV transmission and spread is by the leafhopper Circulifer tenellus which efficiently transmits the virus in a persistent mode and which is present in several southern EU Member States. No current reports of BCTV presence in the EU exist and because of doubts about the accuracy of older reports, BCTV likely is absent from the EU territory. BCTV can enter into the EU with viruliferous insects and with imports of plants not subject to specific EU regulation. Because both the virus and its vector have a wide host range, BCTV is expected to establish and spread in the Member States where its vector is present and to cause severe diseases in sugar beet and tomato as well as in other crops. Overall, BCTV non-EU isolates meet all the criteria evaluated by EFSA to qualify as a Union quarantine pest and do not meet the criterion of presence in the EU to qualify as a Union regulated non-quarantine pest (RNQP). The main uncertainties concern (1) the presence of BCTV in the EU, (2) the distribution of C. tenellus and (3) the main commodities for virus entry.

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Pest categorisation of Beet curly top virus (non‐EU isolates)

Cited by 4 publications

References 21 publications

List of non‐EU viruses and viroids infecting potato (Solanum tuberosum) and other tuber‐forming Solanum species

List of non‐EU viruses and viroids infecting potato (Solanum tuberosum) and other tuber‐forming Solanum species

Pest categorisation of non‐EU viruses and viroids of potato

Pest categorisation of Beet curly top virus (non‐EU isolates)

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