EPPO Global Database

Xylella fastidiosa(XYLEFA)

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Pierce's disease: Marginal necrosis surrounded by chlorotic halo induced by X. fastidiosa on grapevine leaf.

Courtesy: M. Scortichini, Istituto Sperimentale per la Frutticoltura, Rome (IT).

Citrus variegated chlorosis (CVC): Typical spots caused by X. fastidiosa on sweet orange leaves.

Courtesy: M. Scortichini, Istituto Sperimentale per la Frutticoltura, Rome (IT).

Pierce's disease: Marginal necrosis and leaf wilting caused by Xylella fastidiosa on grapevine leaves.

Courtesy: M. Scortichini, Istituto Sperimentale per la Frutticoltura, Rome (IT).

Pierce's disease of grapevine. Spring symptoms in cultivar Chardonnay (healthy leaf on the left).

Courtesy: A.H. Purcell, University of California, Berkeley (US).

Yellowing and desiccation of grapevine leaves, and wilting of bunches, due to X. fastidiosa in the Napa Valley, California (US).

Courtesy: ENSA, Montpellier (FR).

Pierce's disease of grapevine. Symptoms in cultivar Chardonnay (under moisture stress).

Courtesy: A.H. Purcell, University of California, Berkeley (US).

Pierce's disease of grapevine. Persistent petioles.

Courtesy: J. Clark & A.H. Purcell, University of California, Berkeley (US).

Uneven ripening of grapevine shoots, a very characteristic symptom of Pierce's disease.

Courtesy: D. Boubals, ENSA, Montpellier (FR).

Pierce's disease (X. fastidiosa) of grapevine. Irregular ripening of bark. Petiole detach at distal end first.

Courtesy: J. Clark, University of California, Berkeley (US).

Pierce's disease of grapevine. Symptoms in cultivar Merlot.

Courtesy: J. Clark, University of California, Berkeley (US).

Phony peach: Typical “phony peach” symptom on peach leaves caused by X. fastidiosa.

Courtesy: M. Scortichini, Istituto Sperimentale per la Frutticoltura, Rome (IT).

Pierce's disease: “Green island” symptom on grapevine twig at the end of summer, caused by X. fastidiosa.

Courtesy: M. Scortichini, Istituto Sperimentale per la Frutticoltura, Rome (IT).

CVC: Twig dieback, reduction of production and dimension of sweet orange fruits induced by X. fastidiosa.

Courtesy: M. Scortichini, Istituto Sperimentale per la Frutticoltura, Rome (IT).

Pierce's disease of grapevine. Symptoms in cultivar Chardonnay.

Courtesy: J. Clark, University of California, Berkeley (US).

Symptoms of quick decline on olive observed in Puglia (IT).

Courtesy: Françoise Petter (EPPO).

Symptoms of quick decline on olive observed in Puglia (IT).

Courtesy: Françoise Petter (EPPO).

Early symptoms on oleander.

Courtesy: Françoise Petter (EPPO).

Symptoms of leaf scorch on oleander.

Courtesy: Françoise Petter (EPPO).

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Acacia saligna.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Polygala myrtifolia.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on cherry.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on cherry.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on cherry.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on almond.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on almond.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on olive trees.

Courtesy: Courtesy: Jaap Janse (NAK, NL)

Symptoms on olive trees.

Courtesy: Courtesy: Jaap Janse (NAK, NL)

Symptoms on olive trees

Courtesy: Courtesy: Jaap Janse (NAK, NL)

Symptoms on Acacia saligna.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Westringia fruticosa.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Polygala myrtifolia.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Polygala myrtifolia.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Polygala myrtifolia.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Polygala myrtifolia.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Nerium oleander.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms on olive trees.

Courtesy: Courtesy: Jaap Janse (NAK, NL)

Symptoms on olive trees.

Courtesy: Courtesy: Jaap Janse (NAK, NL)

Symptoms on olive trees.

Courtesy: Courtesy: Jaap Janse (NAK, NL)

Symptoms on Polygala myrtifolia.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Polygala myrtifolia.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Acacia saligna.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on cherry.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on cherry.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on cherry.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on cherry.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on an olive tree (note that citrus trees remain uninfected).

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Spartium junceum.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Spartium junceum.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms on Acacia saligna.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT)

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms of quick decline (complesso del disseccamento rapido dell&'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms in an olive orchard.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Symptoms on olive tree.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Symptoms on olive tree.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Symptoms on olive tree.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Advanced symptoms on olive trees.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Advanced symptoms on olive trees.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Advanced symptoms on olive trees.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Symptoms on Nerium oleander.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Symptoms on Nerium oleander.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Symptoms on Nerium oleander.

Courtesy: Camille Picard (DGAL-SDQPV, FR)

Symptoms on olive trees.

Courtesy: Courtesy: Jaap Janse (NAK, NL)

Symptoms on olive trees.

Courtesy: Courtesy: Jaap Janse (NAK, NL)

Symptoms on a coffee plant originating from Ecuador (interception)

Courtesy: Bruno Legendre. Anses, Plant Health Laboratory, Angers (FR)

Symptoms on a coffee plant originating from Ecuador (interception)

Courtesy: Bruno Legendre. Anses, Plant Health Laboratory, Angers (FR)

Early symptoms on an olive tree (Gallipoli, IT)

Courtesy: Bruno Legendre. Anses, Plant Health Laboratory, Angers (FR)

Symptoms on Nerium oleander (Gallipoli, IT)

Courtesy: Bruno Legendre. Anses, Plant Health Laboratory, Angers (FR)

Initial leaf scorch symptoms in combination with atypical leaf curling of leaf margins caused by Xylella fastidiosa on Coffea sp.

Courtesy: Maria Bergsma-Vlami, NPPO, NL

Leaf scorch symptoms caused by Xylella fastidiosa on Coffea sp.

Courtesy: Maria Bergsma-Vlami, NPPO, NL

'Crespera' symptoms caused by Xylella fastidiosa on Coffea sp.

Courtesy: Maria Bergsma-Vlami, NPPO, NL

Xylella fastidiosa on Coffea

Courtesy: Wietse den Hartog (NPPO of the Netherlands)

Xylella fastidiosa on Coffea

Courtesy: Wietse den Hartog (NPPO of the Netherlands)

Xylella fastidiosa on Coffea

Courtesy: Wietse den Hartog (NPPO of the Netherlands)

Symptoms on Polygala myrtifolia

Courtesy: Bruno Legendre, Anses Plant Health Laboratory, Angers (FR)

Symptoms on Polygala myrtifolia

Courtesy: Bruno Legendre, Anses Plant Health Laboratory, Angers (FR)

Symptoms on Polygala myrtifolia

Courtesy: Bruno Legendre, Anses Plant Health Laboratory, Angers (FR)

Symptoms on Polygala myrtifolia

Courtesy: Bruno Legendre, Anses Plant Health Laboratory, Angers (FR)

Scorch symptoms with distinct leaf burn surrounded by a dark line of demarcation between green and dead tissue.

Courtesy: Phillip M Brannen, University of Georgia (US)

Symptoms on fruits from Citrus variegated chlorosis affected trees (small and yellow) compared to those from healthy trees ( bigger and green)

Courtesy: María M. López

Citrus variegated chlorosis in orange leaves (Brazil)

Courtesy: María M. López

Infected blueberry plants with yellow stems and ‘skeletal’ apparence

Courtesy: Phillip M Brannen, University of Georgia (US)

Symptom on the tip of a Coffea leaf

Courtesy: Jérôme JULLIEN, NPPO France

"Crespera" symptoms caused by Xylella fastidiosa on Coffea sp., including curling of leaf margins, chlorosis and deformation of leaves (asymetry).

Courtesy: Maria Bergsma-Vlami, NPPO, NL

Scorch symptoms (late summer) observed on blueberry plants infected with Xylella fastidiosa.

Courtesy: Phillip M Brannen, University of Georgia (US)

Panoramic view of an individual plant of blueberry with bacterial scorch symptoms of Xylella fastidiosa. Some surrounding plants are also starting to show early symptoms as well.

Courtesy: Phillip M Brannen, University of Georgia (US)

Scorch symptoms (late summer) observed on blueberry plants infected with Xylella fastidiosa.

Courtesy: Phillip M Brannen, University of Georgia (US)

Scorch symptoms (late summer) observed on blueberry plants infected with Xylella fastidiosa.

Courtesy: Phillip M Brannen, University of Georgia (US)

Symptoms of Citrus variegated chlorosis in an orange affected tree (Brazil)

Courtesy: María M. López

Symptoms of Citrus variegated chlorosis in the underside of an orange affected leaf (Brazil)

Courtesy: María M. López

Symptoms of Xylella fastidiosa subsp. multiplex on Lavandula x allardi

Courtesy: Agnès POIRIER, NPPO of France

Polygala myrtifolia - infected by Xylella fastidiosa subsp multiplex - Ajaccio (Corse)

Courtesy: Jerôme Jullien, NPPO of France

Polygala myrtifolia - infected by Xylella fastidiosa subsp multiplex - Ajaccio (Corse)

Courtesy: Jerôme Jullien, NPPO of France

Leaf symptoms on a Coffea plant imported from Central America

Courtesy: Jerôme Jullien, NPPO of France

Leaf decline on Coffea plants imported from Central America

Courtesy: Jerôme Jullien, NPPO of France

Symptoms on the leaf blade apex of a Coffea plant imported from Central America

Courtesy: Jerôme Jullien, NPPO of France

Leaf decline on Coffea plants imported from Central America

Courtesy: Jerôme Jullien, NPPO of France

Infected olive orchard

Courtesy: Baldissera Gioviani (Euphresco)

Polygala myrtifolia - infected by Xylella fastidiosa subsp multiplex - Ajaccio (Corse)

Courtesy: Jerôme Jullien, NPPO of France

On Nerium oleander

Courtesy: Baldissera Gioviani (Euphresco)

On Nerium oleander

Courtesy: Baldissera Gioviani (Euphresco)

On Nerium oleander

Courtesy: Baldissera Gioviani (Euphresco)

Infected olive orchard (a view from the bus)

Courtesy: Baldissera Gioviani (Euphresco)

Advanced leaf scorch symptoms caused by Xylella fastidiosa on Coffea sp.

Courtesy: Maria Bergsma-Vlami, NPPO, NL

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).

Symptoms of quick decline (complesso del disseccamento rapido dell'olivo) observed in Puglia (IT) on olive trees.

Courtesy: Donato Boscia, CNR - Institute for Sustainable Plant Protection, UOS, Bari (IT) - Franco Nigro, Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari (IT) - Antonio Guario, Plant Protection Service, Regione Puglia (IT).