Researchers at Oxford University and The Sainsbury Laboratory, Norwich, looked in unprecedented detail at how Phytophthora infestans, a pathogen that continues to blight potatoes and tomatoes today, evolved to target other plants.
'For the first time, we have found a direct molecular mechanism underpinning the change in host specialisation,' said Dr van der Hoorn.
http://www.ox.ac.uk/media/news_stories/2014/140131_1.html