EPPO Global Database

Phytophthora ramorum(PHYTRA)

Distribution details in United Kingdom

Situation
Current pest situation evaluated by EPPO on the basis of information dated 2015: Present, restricted distribution
First recorded in: 2002
Pest status declared by NPPO: Present: only in some areas (2015-10)
From CABI Disease map 978 (2013): Present, restricted distribution
From NPPO: Present, restricted distribution
Comments
EPPO Reporting Service (2002/077) : first found in 2002. 11 findings in England, 10 on Viburnum and one on Rhododendron. Single finds in Scotland and Guernsey.

EPPO Reporting Service (2003/039) : by end of 2002, found at 196 sites.

EPPO Reporting Service (2003/133) : found at over 260 sites but eradicated at more than half of these (new records on Pieris, Kalmia, Camellia, Syringa, Arbutus).

EPPO Reporting Service (2003/146) : now at 290 sites.

EPPO Reporting Service (2003/162) : found on Fagus sylvatica, Quercus ilex, and Aesculus hippocastanum in SW England.

EPPO Reporting Service (2004/024) : infestations found in Cornwall, on Quercus ilex, Q. cerris, Fagus sylvatica, Castanea sativa and Aesculus hippocastanum.

EPPO Reporting Service (2010/033) : found in summer 2009 on Larix kaempferi in England (counties of Devon, Cornwall and Somerset).

EPPO Reporting Service (2011/111) : mortality of Larix kaempferi has been observed on large numbers of trees in South-West England. Mortality is also observed in 1 forest in Wales, and small sites in Scotland, Northern Ireland and Isle of Man.

EPPO Reporting Service (2013/130) : detected in Chamaecyparis lawsoniana trees in Summerset. These trees were growing in the vicinity of infested larch trees.
References
* Brasier C, Webber J (2010) Sudden larch death. Nature 466(12), 824-825.

* Brasier C, Webber J (2012) Natural stem infection of Lawson cypress (Chamaecyparis lawsoniana) caused by Phytophthora ramorum. New Disease Reports 25, 26. http://dx.doi.org/10.5197/j.2044-0588.2012.025.026

* Denman, S.; Webber, J. (2009) Quarterly Journal of Forestry 103 (4), 285-290.

* NPPO of the UK (2003-09, 2003-12, 2004-02).

* INTERNET
- DEFRA UK. http://www.defra.gov.uk
- Forestry Commission UK. Phytophthora ramorum. http://www.forestry.gov.uk/forestry/infd-7xvewh
- Forestry Commission (GB). Phytophthora ramorum in larch trees – Update. http://www.forestry.gov.uk/forestry/INFD-8EJKP4

* IPPC website. Official Pest Reports – Country (GBR-18/3 2015-10-30) Phytophthora ramorum and Japanese larch. https://www.ippc.int/index.php

* Webber JF, Mullett M, Brasier CM (2010) Dieback and mortality of plantation Japanese larch (Larix kaempferi) associated with infection by Phytophthora ramorum. New Disease Reports 22, 19. http://dx.doi.org/10.5197/j.2044-0588.2010.022.019