Phytophthora pseudosyringae

 

revision

Date de publication

jeu, 30 Jui 2022, 14:54

Dernière mise à jour effectuée le

juin 30, 2022, 2:54 après-midi

Report Number

GBR-16/2

Pays

United Kingdom

Identité de l'organisme nuisible

Phytophthora pseudosyringae - (PHYTPS)

Situation du signalement

Final

Hôtes

Vaccinium myrtillus, Fagus sylvatica, Carpinus betulus, Nothofagus procera

Pest Status (old values from ISPM 8 -1998 )

• Present: at low prevalence

Pest Status (ISPM 8 - 2021)

• Present: at low prevalence

Distribution géographique

Various natural habitat sites in England, Wales and Scotland.

Résumé

In January 2009 bilberry plants in woodland in Staffordshire were observed with symptoms of stem dieback, with some plants already dead. It was suspected initially that the plants were infected with Phytophthora ramorum or Phytophthora kernoviae, however, testing has confirmed that the plants were infected with Phytophthora pseudosyringae. In May 2009, symptoms were also found on bilberry plants in a woodland in the south-west of England, which have also been confirmed as infected with P. pseudosyringae. These are the first known reports of P. pseudosyringae on V. myrtillus. In 2007 Forest Research reported findings of P. pseudosyringae on two mature trees of European beech (Fagus sylvatica) and one mature hornbeam (Carpinus betulus) in south Wales. Sampled in 2005, these trees exhibited stem symptoms including bleeding cankers and lesions on the root flares. The trees were originally suspected to be infected with P. ramorum. These were the first records of P. pseudosyringae in the UK and the first record on hornbeam. In 2009, Forest Research identified P. pseudosyringae as the cause of bleeding cankers on Nothofagus procera in Cornwall, another new tree host.

Danger

First finding of Phytophthora pseudosyringae on Vaccinium myrtillus (bilberry) in UK. Earlier findings on tree species. Pest Risk Analysis completed and recommended no statutory action. Voluntary non-statutory action is undertaken by landowners as appropriate.

Fichiers de rapports

Site web

http://www.fera.defra.gov.uk/plants/plantHealth/pestsDiseases/praTableNew.cfm#pseudosyringae

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