7.02.10 - Pine wilt disease

UNIT NOTICEBOARD

2019-07-01

International IUFRO Symposium on Pine Wilt Disease -- CANCELLED DUE TO CORONA VIRUS OUTBREAK

Orléans, France; 9-13 March 2020

Since the first detection of the pine wood nematode, Bursaphelenchus xylophilus, in Portugal in 1999 and in Spain in 2008, this major threat of pine trees is subjected to increased and permanent monitoring in France and more generally in Europe. Native to North America, it was accidentally introduced in Asia where it causes severe damages. It was detected in Japan in 1905, in China in 1982, in Korea in 1988 and in Taiwan in 1995. It was detected for the first time in Europe in 1999 close to Lisbon in Portugal, and since has spread to nearly all the country including the Portuguese island of Madeira in 2009, but also extended into different forests in Spain since 2008. The scientific community studies this invasive pathogenic nematode, its insect vector (Monochamus spp.) and the susceptibility of pine trees. This requires multidisciplinary approaches gathering experts in nematology, entomology, tree resistance, ecology, genetics and modelling.

Details: https://symposium.inra.fr/pwd2020/

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About Unit

The focus of our Working Party is a single forest disease, pine wilt disease (PWD), which is a unique feature of the Unit.  The Working Party serves as an information exchange to advance understanding of PWD as an insect-borne infectious challenge to pine trees and pine ecosystems and to advance control strategies and tactics.  Membership includes scientists from fields such as entomology, nematology, pathology, genetics and tree physiology, as well as government officials involved with regulatory and control aspects of the disease.  The Working Party aims to facilitate an international exchange of information on the all aspects of PWD.

Meetings are held every 3-4 years with the site alternating between Europe and Asia.  Satellite meetings are held, as needed, on an irregular basis.


State of Knowledge

Early studies on pine wilt were conducted in Japan as it was the first county to suffer epidemic losses of forest trees.  In the 1980s the origin of the pinewood nematode was determined to be North America and studies of the nematode, its pathogenicity and its insect vectors were undertaken also in the U.S. and Canada.  Basic information on the biology of the nematode and its insect vectors has been summarized in a number of review articles and books.

The range of the PWN has been extended through international trade and was identified in other Asian countries in the 1980s.  Its range expanded to Europe (Portugal) in 1999. Different host tree species, insect vectors and environmental conditions in the newly introduced area required a new series of investigations.  In addition, advances in taxonomy of Bursaphelenchus nematodes drove studies in related fields. Control measures of PWD, including biological agents and newly devised attractants for the vectors, have been a main subject of the discussion.  Detection and interception of the nematode in relation to international plant protection is a current topic of importance.