In the 1970s and 1980s, pine trees growing in various forestry plantations in South Africa’s Western Cape province began to die in patches. These trees succumbed to a mysterious root disease and the patches expanded gradually. Spontaneous regrowth of seedlings in the patches died dramatically.
Click here for original story, A mystery disease hit South Africa’s pine trees 40 years ago: New DNA technology has found the killer
Source: Phys.org