Population Genetic Analyses of Reveals Three Lineages and Movement Between Natural Vegetation and Avocado Orchards in South Africa.

is the causal agent of root rot, canker, and dieback of thousands of plant species around the globe. This oomycete not only causes severe economic losses to forestry and agricultural industries, but also threatens the health of various plants in natural ecosystems. In this study, 380 isolates of from four avocado production areas and two regions of natural vegetation in South Africa were investigated using 15 microsatellite markers.