TY - JOUR
T1 - Susceptibility of Citrus spp., Quercus ilex and Vitis spp. to Xylella fastidiosa strain CoDiRO
AU - Jeger, Michael
AU - Bragard, Claude
AU - Caffier, David
AU - Chatzivassiliou, Elisavet
AU - Dehnen Schmutz, Katharina
AU - Gilioli, Gianni
AU - Grégoire, Jean Claude
AU - Jaques Miret, Josep Anton
AU - Macleod, Alan
AU - Navajas Navarro, Maria
AU - Niere, Bjoern
AU - Parnell, Stephen
AU - Potting, Roel
AU - Rafoss, Trond
AU - Rossi, Vittorio
AU - Urek, Gregor
AU - Van Bruggen, Ariena
AU - Van Der Werf, Wopke
AU - West, Jonathan
AU - Winter, Stephan
AU - De La Fuente, Leonardo
AU - Spotti Lopes, João Roberto
AU - Tramontini, Sara
AU - Andueza, Miren
AU - Candresse, Thierry
PY - 2016
Y1 - 2016
N2 - 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 CoDiRO. 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 CoDiRO 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 CoDiRO 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 CoDiRO 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 CoDiRO. 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 CoDiRO strain, but that it would
be premature to consider this tentative conclusion as firmly established.
AB - 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 CoDiRO. 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 CoDiRO 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 CoDiRO 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 CoDiRO 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 CoDiRO. 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 CoDiRO strain, but that it would
be premature to consider this tentative conclusion as firmly established.
KW - Citrus
KW - grapevine
KW - holly oak
KW - host pla nt
KW - inoculation
KW - Citrus
KW - grapevine
KW - holly oak
KW - host pla nt
KW - inoculation
UR - http://hdl.handle.net/10807/93730
U2 - 10.2903/j.efsa.2016.4601
DO - 10.2903/j.efsa.2016.4601
M3 - Article
SN - 1831-4732
VL - 14
SP - 1
EP - 19
JO - EFSA Journal
JF - EFSA Journal
ER -