POWDERY MILDEW ON RASPBERRY IS GENETICALLY DIFFERENT FROM STRAWBERRY POWDERY MILDEW
N. Harvey, X.-M. Xu
Strawberry powdery mildew, caused by Podosphaera aphanis, is one of the most serious diseases on strawberry worldwide. In contrast, raspberry powdery mildew is usually less severe. Both diseases are believed to be caused by the same fungal species (P. aphanis). However, this paper shows that the mildews on these two hosts are genetically distinct. Sequencing the ITS region of a number selected samples from the two fungi clearly indicates that these two fungi are genetically different.