EPPO Global Database

Pseudomonas syringae pv. aesculi(PSDMAX)

Distribution details in Germany

Situation
Current pest situation evaluated by EPPO on the basis of information dated 2019: Present, restricted distribution
First recorded in: 2008
Pest status declared by NPPO: Present, verified only in parts of the area / single cases (2011-02)
From CABI Disease map 1093 (2015): Present, restricted distribution
Comments
EPPO Reporting Service (2009/117) : confirmed in 2008 in 1 tree in Hamburg (it is also reported that the disease has also been observed on other trees but no details were given on their detailed location in Germany).

EPPO Reporting Service (2011/035) : disease also found in Sachsen on 6 horse chestnut trees (pathogen identity confirmed in 1 tree).

According to Melzer et al. (2019): found again in Hamburg in 82 trees (in mixed infection with Phytophthora cactorum in 3 trees).
References
* INTERNET (last retrieved 2009-06)
JKI web site (DE). New disease of horse chesnut Pseudomonas syringae pv. aesculi (in German). http://www.jki.bund.de/nn_932586/DE/Aktuelles/aktschadorg/rosskastaniensterben/rosskastaniensterben__inhalt.html

* Müller-Navarra A, Gaiser O, Moreth U, Dujesiefken D, Magel EA (2014) New disease on red flowering horse chestnut (Aesculus x carnea Hayne) and the molecular identification of the involved pathogens. Journal für Kulturpflanzen 66(12), 417-423.
------- Hamburg.

* Melzer T, Breuhahn M, Rybak M, Doobe G (2019) [Differential diagnosis of the pathogens Pseudomonas syringae pv. aesculi and Phytophthora spp. on Aesculus spp. in the urban area of Hamburg]. Journal für Kulturpflanzen 71(10), 253-263 (in German).
------- Found on 82 horse chestnut trees in Hamburg during studies conducted in 2018.

* NPPO of Germany (2011-02).

* Schmidt O, Dujesiefken D, Stobbe H, Moreth U, Kehr R, Schroder T (2008) Pseudomonas syringae pv. aesculi associated with horse chestnut bleeding canker in Germany. Forest Pathology 38(2), 124-128.

* Schmidt O, Moreth U, Dujesiefken D, Stobbe H, Gaiser O (2009) Fast molecular detection of Pseudomonas syringae pv. aesculi in diseased horse chestnut trees. Forest Pathology 39(5), 343-348.
------- Detected in samples from Baden-Württemberg, Hamburg, Niedersachsen, Nordrhein-Westfalen, Schleswig-Holstein.
Situation in neighbouring countries
Country State Status
Austria Present, few occurrences view...
Belgium Present, restricted distribution view...
Czech Republic Present, restricted distribution view...
France Present, restricted distribution view...
Netherlands Present, widespread view...
Switzerland Present, few occurrences view...