ScienceDaily: Scientists have found that strains of the wheat pathogen causing severe yellow rust epidemics in Europe have their origin in the centre of diversity in the Himalayan region. This disease can have a great impact on wheat production in Europe, including organic crop production in Denmark. Wheat is the most widely cultivated food crop in the world. However, the global production of wheat is under constant threat from devastating fungal diseases. The ever more frequent and severe large-scale epidemics...