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PRA Phytoplasma Phoenicium EUROPEAN AND MEDITERRANEAN PLANT PROTECTION ORGANIZATION ORGANISATION EUROPEENNE ET MEDITERRANEENNE POUR LA PROTECTION DES PLANTES 17-23265 Pest Risk Analysis for ‘Candidatus Phytoplasma phoenicium’ (Bacteria: Acholeplasmataceae) causing almond witches’ broom September 2017 EPPO 21 Boulevard Richard Lenoir 75011 Paris www.eppo.int [email protected] This risk assessment follows the EPPO Standard PM 5/5(1) Decision-Support Scheme for an Express Pest Risk Analysis (available at http://archives.eppo.int/EPPOStandards/pra.htm) and uses the terminology defined in ISPM 5 Glossary of Phytosanitary Terms (available at https://www.ippc.int/index.php). This document was first elaborated by an Expert Working Group and then reviewed by the Panel on Phytosanitary Measures and if relevant other EPPO bodies. Cite this document as: EPPO (2017) Pest risk analysis for ‘Candidatus Phytoplasma phoenicium’. EPPO, Paris. Available at http://www.eppo.int/QUARANTINE/Pest_Risk_Analysis/PRA_intro.htm and https://gd.eppo.int/taxon/PHYPPH Photo: Witches’ Broom on almond. Courtesy: Marina Molino Lova (AVSI-Lebanon) 1 17-23265 (17-22751, 17-22511, 16-22364, 16-22291, 16-22231, 16-22152) Based on this PRA, ‘Candidatus Phytoplasma phoenicium’ was added to the A1 Lists of pests recommended for regulation as quarantine pests in 2017. Pest Risk Analysis for ‘Candidatus Phytoplasma phoenicium’ (Bacteria: Acholeplasmataceae) causing almond witches’ broom PRA area: EPPO region Prepared by: EWG on 'Candidatus Phytoplasma phoenicium' Date: 6-9 December 2016 (the PRA was further reviewed and amended by other EPPO bodies, see below) Composition of the Expert Working Group (EWG) ABOU-JAWDAH Yusuf (Prof.) Agriculture Department, Faculty of Agricultural and Food Sciences, American University of Beirut, Bliss Street, 11-0236, 1107-2020 Riad El-Solh, Lebanon Tel: +961-1343002 - [email protected] AVENDANO GARCIA Nuria (Ms) TRAGSATEC, C/Julian Camarillo, 6a. Sector 4a., 28037 Madrid, Spain (core member) Tel: +34-607736171 - [email protected] BIANCO Piero Attilio (Mr) Dipartimento di Scienze Agrarie e Ambientali, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy Tel: +39-250316794 - [email protected] KARBOUA Samira (Ms) Institut National de la Protection des Végétaux, N°1 BT F59 CITE 1016 LOGTS El Achour Alger, 16000 El- Achour, Algeria Tel: +213-555101132 - [email protected] LHEUREUX Fabrice (Mr) Ctifl, centre de Lanxade, 28 route des Nébouts, 24130 Prigonrieux, France Tel: +33-553580005 - [email protected] LOISEAU Marianne (Ms) Laboratoire de la santé des végétaux-ANSES, 7 rue Jean Dixméras, 49044 Angers Cedex 01, France Tel: +33-241207459 - [email protected] MOLINO LOVA Marina (Ms) AVSI Foundation - Lebanon, St. Fawqa Street, 1200 Jounieh Ghadir, Lebanon Tel: +961-3451883 - [email protected] SAGLAM Asuman (Ms) Izmir Zirai Karantina Müdürlügü, No. 11 Liman Caddesi -Alsancak, 35220 Konak-Izmir, Turkey (core member) Tel: +90-2324634911 - [email protected] SIAMPOUR ASHKAVANDI Majid Department of Plant Protection, College of Agriculture, Shahrekord University, (Mr) 88186-34141 Shahrekord, Iran (Islamic Republic Of) Tel: +98-3832324428 - [email protected] TUFFEN Melanie (Ms) Department for Environment, Food & Rural Affairs, Room 02FA01/05, NAFIC, YO41 1LZ Sand Huton, United Kingdom Tel: +44-2080262514 - [email protected] Observer RICCIONI Luca (Mr) Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria, Centro di Ricerca per la Patologia Vegetale, Via C.G. Bertero 22, I-00156 Roma, Italy Tel: +39-0682070329 - [email protected] EPPO GROUSSET Fabienne (Ms) OEPP/EPPO, 21 boulevard Richard Lenoir, 75011 Paris, France SUFFERT Muriel (Ms) Tel: +33-145207794 - [email protected]; [email protected] This PRA follows EPPO Standard PM 5/5 Decision-Support Scheme for an Express Pest Risk Analysis, but using a 5-level scale for likelihoods and magnitudes. For the determination of ratings of likelihoods and uncertainties, experts were asked to provide a rating and level of uncertainty individually during the meeting, based on the evidence provided in the PRA and on the discussions in the group. Each EWG member provided anonymously a rating and level of uncertainty, and proposals were then discussed together in order to reach a final decision. 2 All personal communications in this PRA were obtained in 2016. Prior to the EWG, comments on specific issues were obtained from Rosemarie Tedeschi and Luca Picciau (Università di Torino, Italy), Fabio Quaglino (Università degli Studi di Milano), J.Th.J. Verhoeven (Dutch NPPO). Following the EWG, the PRA was further reviewed by correspondance in January-February 2017 by the following PRA core members: Roel Potting (The Netherlands), Arild Sletten (Norway), Robert Steffek (Austria), Nursen Urstun (Turkey), Dirk Jan van der Gaag (The Netherlands), as well as by EPPO Staff (Camille Picard and Françoise Petter). The Pest Risk Management was reviewed by the EPPO Panel on Phytosanitary Measures in March 2017. EPPO Working Party on Phytosanitary Regulation and Council agreed that ‘Candidatus Phytoplasma phoenicium’ should be added to the A1 Lists of pests recommended for regulation as quarantine pests in 2017. CONTENTS Stage 1. Initiation ...................................................................................................................................................................................5 Stage 2. Pest risk assessment .............................................................................................................................................................5 1. Taxonomy ............................................................................................................................................................................................5 2. Pest overview ......................................................................................................................................................................................7 3. Is the pest a vector? ............................................................................................................................................................................9 4. Is a vector needed for pest entry or spread? .......................................................................................................................................9 5. Regulatory status of the pest .............................................................................................................................................................10 6. Distribution .........................................................................................................................................................................................11 7. Host plants and their distribution in the PRA area .............................................................................................................................13 8. Pathways for entry .............................................................................................................................................................................15 8.1 Consideration of pathways ..............................................................................................................................................................15 8.2 Very unlikely pathways ....................................................................................................................................................................18 9. Likelihood of establishment outdoors in the PRA area ......................................................................................................................19 9.1 Climatic suitability ............................................................................................................................................................................19 9.2 Host plants .......................................................................................................................................................................................19 10. Likelihood of establishment in protected conditions in the PRA area ..............................................................................................22 11. Spread in the PRA area ...................................................................................................................................................................22 12. Impact in the current area of distribution .........................................................................................................................................23 13. Potential impact in the PRA area .....................................................................................................................................................24 14. Identification of the endangered area ..............................................................................................................................................25 15. Overall assessment of risk ..............................................................................................................................................................25 Stage 3. Pest risk management ..........................................................................................................................................................26 16. Phytosanitary measures ..................................................................................................................................................................26
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