Distribution
Originally thought to be native to North America, the PWN has now spread overseas to countries such as Japan, China, Vietnam, and Portugal, where it has caused severe damage in certain species of pine. Perhaps the most notable PWN epidemic has occurred in Japan, where pine wilt is credited with the destruction of some 26 million cubic meters of timber since WWII.
Pine wilt, as a disease, was first identified in Japan in 1905. Recent research has now indicated it may have originated from Japan and Asia.and been transferred via shipping. It was found in the United States in Missouri in 1931. PWN was identified as the pathogen responsible for pine wilt in 1979.
Read more about this topic: Bursaphelenchus Xylophilus
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