List of non-EU phytoplasmas of tuber-forming Solanum spp.

Following a request from the European Commission, the EFSA Panel on Plant Health prepared a list of nonEUphytoplasmas of tuber-forming Solanum spp. A systematic literature review and search of databasesidentified 12 phytoplasmas infecting S. tuberosum. These phytoplasmas were assigned to threecategories. The first group (a) consists of seven non-EU phytoplasmas, known to occur only outside the EU('Candidatus Phytoplasma americanum', 'Ca. P. australiense', 'Ca. P. fragariae'-related strain (YN-169,YN-10G) and 'Ca. P. hispanicum') or having only limited presence in the EU ('Ca. P. aurantifolia'-relatedstrains, 'Ca. P. pruni'-related strains and 'Ca. P. trifolii'). The second group (b) consists of threephytoplasmas originally described or reported from the EU. The third group (c) consists of twophytoplasmas with substantial presence in the EU, whose presence in S. tuberosum is not fully supportedby the available literature. Phytoplasmas of categories (b) and (c) were excluded at this stage from furthercategorisation efforts. Three phytoplasmas from category (a) ('Ca. P. australiense', 'Ca. P. hispanicum' and'Ca. P. trifolii') were excluded from further categorisation, as a pest categorisation has already beenperformed by EFSA. Comments provided by the EU Member States were integrated in the opinion. Themain uncertainties of this listing concern: the taxonomy, the geographic distribution and prevalenceand host range. The following phytoplasmas considered as non-EU and whose presence in S. tuberosumis fully supported by literature (category (a)) are categorised by the Panel in a separate opinion:'Ca. P. americanum', 'Ca. P. fragariae'-related strain (YN-169, YN-10G), 'Ca. P. aurantifolia'-related strainsand 'Ca. P. pruni'-related strains.