Pest categorisation of potato virus S (non‐EU isolates)

Bragard, Claude [UCL] Dehnen‐Schmutz, Katharina Gonthier, Paolo Jacques, Marie‐Agnès Jaques Miret, Josep Anton Justesen, Annemarie Fejer MacLeod, Alan Magnusson, Christer Sven Milonas, Panagiotis Navas‐Cortes, Juan A Parnell, Stephen Potting, Roel Reignault, Philippe Lucien Thulke, Hans‐Hermann van der Werf, Wopke Vicent Civera, Antonio Yuen, Jonathan Zappalà, Lucia Candresse, Thierry Lacomme, Christophe Bottex, Bernard Oplaat, Carla Roenhorst, Annelien Schenk, Martijn Di Serio, Francesco et al.[show all]

Following a request from the EU Commission, the Panel on Plant Health has addressed the pest categorisation of non-EU isolates of potato virus S (PVS). The information currently available on geographical distribution, biology, epidemiology, potential entry pathways, potential additional impact compared to the current situation in the EU, and availability of control measures of non-EU isolates of PVS has been evaluated with regard to the criteria to qualify as potential Union quarantine pest. Because non-EU isolates of PVS are absent from the EU, they do not meet one of the requirements to be regulated as an RNQP (presence in the EU); as a consequence, the Panel decided not to evaluate the other RNQP criteria for these isolates. Populations of PVS can be subdivided into two strains: the ordinary strain (PVS-O) with a worldwide distribution (including the EU), and the Andean strain (PVS-A) which is absent from the EU or considered to have at most a limited distribution in the EU. Two additional divergent isolates (PVS-A/PVS-O recombinants and PVS-arracacha) have also been categorised. Non-EU isolates of PVS-A are expected to have an additional impact as compared to the PVS isolates currently present in the EU, and therefore meet all the criteria to qualify as potential Union quarantine pests; the magnitude of the additional impact is, however, unknown. Non-EU isolates of PVS-A/PVS-O recombinants and of PVS-arracacha also meet these criteria, with the exception of the criterion regarding the potential additional consequences in the EU territory for which the Panel was unable to conclude. Non-EU PVS-O isolates are not expected to have an additional impact in the EU as compared to EU isolates and therefore do not meet the corresponding criterion.