Open AccessSusceptibility of Citrus spp., Quercus ilex and Vitis spp. to Xylella fastidiosa strain CoDi RO
Author(s) -
Jeger Michael,
Bragard Claude,
Caffier David,
Chatzivassiliou Elisavet,
DehnenSchmutz Katharina,
Gilioli Gianni,
Grégoire JeanClaude,
Jaques Miret Josep Anton,
MacLeod Alan,
Navajas Navarro Maria,
Niere Bjoern,
Parnell Stephen,
Potting Roel,
Rafoss Trond,
Rossi Vittorio,
Urek Gregor,
Van Bruggen Ariena,
Van Der Werf Wopke,
West Jonathan,
Winter Stephan,
De La Fuente Leonardo,
Spotti Lopes João Roberto,
Tramontini Sara,
Andueza Miren,
Candresse Thierry
Publication year - 2016
Publication title -
efsa journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.076
H-Index - 97
ISSN - 1831-4732
DOI - 10.2903/j.efsa.2016.4601
Subject(s) - xylella fastidiosa , vitis vinifera , biology , european commission , orange (colour) , inoculation , strain (injury) , horticulture , botany , european union , bacteria , genetics , business , economic policy , anatomy
Following a request from the European Commission, the EFSA Plant Health Panel analysed a dossier submitted by the Italian Authorities to reach a conclusion on the status of Vitis spp., Citrus spp. and Quercus ilex as hosts for Xylella fastidiosa strain CoDi RO . The Panel acknowledges the difficulty to provide compelling evidence for non‐susceptibility of a particular plant species. In the case of Vitis spp., the Panel considers that convergent lines of evidence provide sufficient demonstration that at least the tested varieties (Cabernet Sauvignon, Negroamaro and Primitivo) do not support a systemic infection by the CoDi RO strain. The extension of this conclusion to other grapevine varieties and to Vitis species other than Vitis vinifera is associated with significant uncertainties. The Panel therefore considers it premature to conclude that all Vitis species are unable to support a CoDi RO systemic infection. In addition, although the local accumulation detected in the mechanical inoculation experiments may represent an artefact, the Panel considers it premature to conclude that the tested grapevine varieties are not able to support local multiplication of the CoDi RO strain. Further extension of this conclusion to other grapevine varieties and to non‐ vinifera species is also premature. For Citrus spp., the data available provide coherent and converging lines of evidence suggesting that sweet orange may be a non‐systemic host of strain CoDi RO . However, given the limited scope of the data available on other species, the Panel considers it premature to reach a general conclusion for all Citrus species. The potential epidemiological consequences of non‐systemic infections remain to be fully evaluated. In the case of Quercus ilex , the Panel concludes that the limited data available provides some evidence suggesting that it may not be a systemic host of the CoDi RO strain, but that it would be premature to consider this tentative conclusion as firmly established.