Phylogeography and population structure of the grape powdery mildew fungus, Erysiphe necator, from diverse Vitis species.

ABSTRACT:

Background

The grape powdery mildew fungus, Erysiphe necator, was introduced into Europe more than 160 years ago and is now distributed everywhere that grapes are grown. To understand the invasion history of this pathogen we investigated the evolutionary relationships between introduced populations of Europe, Australia and the western United States (US) and populations in the eastern US, where E. necator is thought to be native. Additionally, we tested the hypothesis that populations of E. necator in the eastern US are structured based on geography and Vitis host species.

Results

We sequenced three nuclear gene regions covering 1803 nucleotides from 146 isolates of E. necator collected from the eastern US, Europe, Australia, and the western US. Phylogeographic analyses show

SUBMITTER: Brewer MT 

PROVIDER: S-EPMC2941690 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature